УСТРОЙСТВО ОБНАРУЖЕНИЯ ОТКАЗА СИСТЕМЫ УПРАВЛЕНИЯ ТРАНСПОРТНЫМ СРЕДСТВОМ

Изобретение относится к системам управления транспортными средствами, в которых множество компьютеров управления соединены через сеть. Блок управления генерирует сигнал управления на основе рабочего запроса для управления движением транспортного средства путем управления соответствующим приводом посредством сформированного сигнала управления. Процессор соединен с блоком управления посредством сети и формирует и обеспечивает блоку управления дополнительную информацию, используемую для модификации рабочего запроса или сформированного сигнала управления в блоке управления. Посредством этого обеспечивается управление передвижением транспортного средства или динамическим состоянием транспортного средства. Процессор выполняет заданные вычисления на основании вводимой информации мониторинга и передачи результата заданного вычисления. Устройство обнаружения отказа обеспечено в блоке управления и содержит узел вывода, предназначенный для вывода информации мониторинга на процессор, узел приема, предназначенный ...

СПОСОБ УПРАВЛЕНИЯ КОМПОНЕНТОМ ВАЖНОЙ ДЛЯ ОБЕСПЕЧЕНИЯ БЕЗОПАСНОСТИ РАСПРЕДЕЛЕННОЙ СИСТЕМЫ

Изобретение относится к технике обеспечения безопасности распределенной системы, прежде всего компонентом (Akt1) системы типа "X-by-Wire", используемой в транспортном средстве. Управление компонентом (Akt1) осуществляют с помощью относящегося к нему первого управляющего модуля (R1) по меньшей мере с одной первой микропроцессорной системой (P1). Для контроля за работоспособностью микропроцессорной системы (P1) предусмотрен не зависимый от этой первой микропроцессорной системы (P1) контрольный блок. В соответствии с изобретением важная для обеспечения безопасности система помимо первой микропроцессорной системы (P1) имеет по меньшей мере еще одну микропроцессорную систему (Рm), которая, например физической шиной (K1) данных, соединена с первой микропроцессорной системой (P1) для обмена с ней данными. Такие дополнительные микропроцессорные системы (Рm) берут на себя выполнение функций контрольного блока. Тем самым отпадает необходимость предусматривать отдельный контрольный блок. Это позволяет ...

СПОСОБ И УСТРОЙСТВО КОНТРОЛЯ НОРМАЛЬНОГО ФИКСИРОВАНИЯ ПРИ ТРАНСПОРТИРОВКЕ ТРАНСПОРТНОГО СРЕДСТВА В РЕЖИМЕ ОЖИДАНИЯ И ТРАНСПОРТНОЕ СРЕДСТВО, ОБОРУДОВАННОЕ ТАКИМ УСТРОЙСТВОМ

Группа изобретений относится к способу контроля нормального фиксирования в ситуации транспортировки транспортного средства в режиме ожидания. Транспортное средство содержит устройство (15) контроля траектории, датчики (17) скорости колеса и датчик (13) скорости рысканья, блок (21) обработки данных, устройство (22) фиксирования транспортного средства. При контроле нормального фиксирования транспортного средства обнаруживают работу в режиме ожидания стоящего транспортного средства (1) после его закрепления на транспортировочной платформе (3). Обнаруживают нулевую скорость транспортного средства (1), снимаемую датчиками (17) скорости колеса транспортного средства после закрепления транспортного средства (1) на транспортировочной платформе (3), в заранее определенный период времени. Определяют не равную нулю скорость рысканья транспортного средства (1), соответствующую относительному движению транспортного средства (1), закрепленного на платформе (3) в заранее определенный период времени. Обнаруживают ...

УСТРОЙСТВО И СПОСОБ КОНТРОЛЯ ДАТЧИКА, А ТАКЖЕ ДАТЧИК

Заявленная группа изобретений относится к области использования в транспортных средствах, например в автомобилях с электронными системами управления наполнением цилиндров двигателя (EGAS) в блоках управления двигателями должна реализовываться трехуровневая концепция. Заявленная группа изобретений относится к устройству контроля датчика (12) транспортного средства, прежде всего автомобиля на топливных элементах, к датчику транспортного средства с устройством контроля, а также к способу контроля датчика (12), соединенного с первым блоком (16) обработки данных. Заявленное устройство для контроля датчика (12) транспортного средства, прежде всего автомобиля на топливных элементах, включающее в себя: первый модуль (18) контроля, предназначенный для контроля работы датчика (12) на наличие неисправностей, второй модуль (20) контроля, также предназначенный для контроля работы датчика (12) на наличие неисправностей, третий модуль (30) контроля, предназначенный для контроля работы второго модуля ( ...

УСТРОЙСТВО УПРАВЛЕНИЯ ДЛЯ ИСПОЛЬЗОВАНИЯ В АВТОМОБИЛЕ, ПРЕДНАЗНАЧЕННОЕ ДЛЯ УПРАВЛЕНИЯ ЗАЩИТНЫМИ МЕРАМИ ПРОТИВ ОТКАЗА ИСТОЧНИКА ЭЛЕКТРОПИТАНИЯ

... 1. Автомобильное устройство управления защитными мерами во время отказа источника питания для автомобиля, оборудованного электрическим механизмом парковочной блокировки для блокировки вращения колес, причем устройство управления защитными мерами во время отказа источника питания содержитсредство обнаружения отказа источника питания для обнаружения возникновения одного из случаев неспособности к зарядке нарушения зарядки в источнике питания парковочного блокиратора механизма парковочной блокировки,средство проверки состояния хранения электроэнергии для проверки состояния хранения электроэнергии источника питания парковочного блокиратора в момент или после обнаружения отказа источника питания средством обнаружения отказа источника питания, исредство парковочной блокировки для блокировки вращения колес с помощью механизма парковочной блокировки, при условии, что скорость автомобиля позволяет блокировать вращение колеса с помощью механизма парковочной блокировки, когда состояние хранения электроэнергии ...

СПОСОБ И УСТРОЙСТВО ОБНАРУЖЕНИЯ СИТУАЦИИ ТРАНСПОРТИРОВКИ ТРАНСПОРТНОГО СРЕДСТВА В РЕЖИМЕ ОЖИДАНИЯ И ТРАНСПОРТНОЕ СРЕДСТВО, ОБОРУДОВАННОЕ ТАКИМ УСТРОЙСТВОМ

... 1. Способ обнаружения ситуации транспортировки транспортного средства (1) в режиме ожидания, при этом транспортное средство (1) содержит устройство (15) контроля траектории, датчики (17) скорости колеса и датчик (13) скорости движения при сносе транспортного средства, соединенные с указанным устройством (15) контроля траектории транспортного средства, и блок (21) обработки отслеживаемых данных типа бортового компьютера, управляющий, в частности, режимами работы транспортного средства. такими как режим выключения транспортного средства, режим ожидания, режим готовности к запуску, режим запуска, режим запущенного двигателя, отличающийся тем, что содержит этапы, на которых:обнаруживают работу в режиме ожидания стоящего транспортного средства (1) после его закрепления на транспортировочной платформе (3),обнаруживают нулевую скорость транспортного средства (1), снимаемую датчиками (17) скорости колеса транспортного средства после указанного закрепления транспортного средства (1) на транспортировочной ...

СИСТЕМА, СОДЕРЖАЩАЯ ПОДСИСТЕМУ УПРАВЛЕНИЯ, И СИСТЕМА В ТРАНСПОРТНОМ СРЕДСТВЕ (ВАРИАНТЫ)

PRÜF- UND DREHZAHLREGELUNG VON ELEKTRISCHEN MOTOREN IN KRAFTFAHRZEUGEN MIT ELEKTRONISCH GESTEUERTEN BREMSSYSTEMEN

Antiblockier-Bremssteuergerät

EINRICHTUNG ZUR ANHAENGER-KENNUNG BEI LASTZUEGEN

System zur Doppelrechner-Übereinstimmungsüberprüfung.

Verfahren zur Funktionsüberprüfung eines druckmittelbetriebenen elektronischen Bremssystems eines Fahrzeugs

Die Erfindung betrifft ein Verfahren zur Funktionsüberprüfung eines druckmittelbetriebenen elektronischen Bremssystems (1) eines Fahrzeugs, mit einer Ventil- und Sensoreinrichtung (2), aufweisend mindestens einen Steuerdruckeingang (P42, P43) und mindestens einem Steuerdruckausgang (P22), und bestehend aus mehreren Ventilen (7, 8, 9, 11), welche als elektrisch betätigte Einlassventile, Auslassventile und Redundanzventile oder als Druckventile ausgebildet sind, und mit mindestens einem Ist-Drucksensor (12) zur Erfassung und Signalisierung eines Ist-Steuerdrucks, sowie mit mindestens einem der Ventil- und Sensoreinrichtung (2) zugeordneten Solldrucksensor (3) zur Erfassung und Signalisierung eines Soll-Steuerdrucks, und mit einer elektronischen Steuereinheit (4), die mit den elektrisch betätigten Ventilen (7, 8, 9) sowie den Drucksensoren (3, 12) zu deren Steuerung oder Signalerfassung signaltechnisch verbunden ist. Die genaue Funktionsfähigkeit des Solldrucksensors (3) wird dadurch überprüft ...

Verfahren zum automatisierten elektronischen Steuern eines Bremssystems sowie elektronisch steuerbares Bremssystem in einem Nutzfahrzeug

Die Erfindung betrifft ein Verfahren zum automatisierten elektronischen Steuern eines Bremssystems (100) in einem Fahrzeug (200), mit mindestens den folgenden Schritten: – Einlesen eines Anforderungs-Signals (S1) zum automatisierten elektronischen Ansteuern von Aktuatoren (1, 50, 52, 53) in dem Fahrzeug (200), wobei mindestens einer der Aktuatoren (1, 50, 52, 53) einen Einfluss auf eine Fahrzeug-Ist-Längsdynamik des Fahrzeuges (200) hat und über das Anforderungs-Signal (S1) von den Aktuatoren (1, 50, 52, 53) umzusetzende Anforderungen (aSoll, vSoll, RSoll) zum Bewirken einer automatisiert angeforderten Fahrzeug-Soll-Längsdynamik übertragen werden; – Plausibilisieren des Anforderungs-Signals (S1) zum Feststellen, ob die Anforderungen (aSoll, vSoll, RSoll) zum Bewirken der automatisiert angeforderten Fahrzeug-Soll-Längsdynamik von den Aktuatoren (1, 50, 52, 53) vollständig oder fehlerfrei umgesetzt werden oder werden können; – Ermitteln einer Korrektur-Verzögerung (zKorr) und/oder eine Korrektur-Geschwindigkeit ...

ZWEIKREIS-BREMSEINRICHTUNG

Elektrische Ausrüstung eines Fahrzeugs mit einer wenigstens teilweise elektrischen Brems- und Lenkeinrichtung

Die Erfindung betrifft eine elektrische Ausrüstung eines Fahrzeugs mit einer wenigstens teilweise elektrischen Brems- und Lenkeinrichtung beinhaltend eine elektrische oder elektro-mechanische Lenkeinrichtung (26) mit oder ohne durchgehende mechanische Verbindung zwischen einem Lenkrad (28) und einem Lenkgetriebe (30) sowie mit einer elektronischen Lenksteuereinrichtung und einem elektrischen Lenksteller (72), und eine elektropneumatische Betriebsbremseinrichtung (124), welche eine elektropneumatische Betriebsbremsventileinrichtung (1), eine elektronische Bremssteuereinrichtung (EBS-ECU), elektropneumatische Modulatoren (114, 116) sowie pneumatische Radbremsaktuatoren (118, 120) beinhaltet, wobei die elektropneumatische Betriebsbremsventileinrichtung (1) ein Betriebsbremsbetätigungsorgan (10) sowie innerhalb wenigstens eines elektrischen Betriebsbremskreises wenigstens einen elektrischen Kanal (130) mit wenigstens einem vom Betriebsbremsbetätigungsorgan (10) betätigbaren elektrischen Bremswertgeber ...

HYDRAULISCHES FAHRZEUGBREMSSYSTEM

Verfahren zum Erfassen eines Bremskreislaufdefektes

Ein Verfahren zum Erfassen eines Fehlerzustands in einem Hydraulikbremssystem eines Fahrzeugs mit einem ersten Hydraulikbremskreislauf zum Betätigen eines ersten Satzes von Fahrzeugbremsaktuatoren für einen ersten Radsatz und einem zweiten Hydraulikbremskreislauf zum Betätigen eines zweiten Satzes von Fahrzeugbremsaktuatoren für einen zweiten Radsatz, wobei der erste Hydraulikbremskreislauf einen Drucksensor umfasst, wobei das Verfahren die Schritte umfasst: - Messen eines Drucks innerhalb des ersten Hydraulikbremskreislaufes des Fahrzeugs unter Verwenden des Drucksensors; - Bestimmen einer tatsächlichen Fahrzeugbeschleunigung des Fahrzeugs; - Bestimmen eines Korrelationsverhältnisses zwischen dem Druck und der tatsächlichen Fahrzeugbeschleunigung; - Bestimmen, ob das Korrelationsverhältnis sich innerhalb eines vorbestimmten Bereichs befindet; - Messen einer Radgeschwindigkeit jeden Rades; - Bestimmen eines ersten Radgeschwindigkeitsdifferentials zwischen einem ersten Rad des ersten Radsatzes ...

VERFAHREN UND VORRICHTUNG ZUR UEBERWACHUNG RECHNERGESTEUERTER STELLGLIEDER

Feststellbremsen-Steuereinrichtung

Eine EPB wird zur Zeit einer Abnormalität, wie beispielsweise einer Bremsenstörung, bestätigt, sodass eine gewünschte Bremskraft in geeigneter Weise erzeugt wird. Wenn eine Abnormalität oder ein Unterdruck-Abfallzustand in einer Hauptbremseinrichtung auftritt, wird eine Hilfsarretierungssteuerung durchgeführt, in welcher eine fehlende Bremskraft auf Basis eines Arretierungsbetriebs der EPB erzeugt wird, oder wird eine Hilfsfreigabesteuerung durchgeführt, in welcher ein EPB-Freigabebetrieb durchgeführt wird, um die durch die EPB erzeugte Bremskraft abzubauen oder zu reduzieren. In Abhängigkeit von einer durch eine Hilfsarretierungsbestimmung bestimmten Störungsart werden ein Rad, an welchem die Hilfsarretierungssteuerung durchzuführen ist, und eine durch die Hilfsarretierungssteuerung zu erzeugende Feststellbremskraft vorgegeben. Im Ergebnis kann, sogar wenn eine Abnormalität oder ein Unterdruck-Abfallzustand in der Hauptbremseinrichtung auftritt, eine gewünschte Bremskraft in geeigneter ...

Universalsteuergerät für Regeleinrichtungen

Universalsteuergerät für unterschiedlich ausgestaltete Regeleinrichtungen, wobei - bei wenigstens einer möglichen Verwendung des Universalsteuergerätes nicht alle dessen Ein- bzw. Ausgänge belegt sind und - bei einer bestimmten Verwendung aufgrund eines Befehls, der von außerhalb des Universalsteuergeräts kommt, dieses aufgrund von Rückmeldungen von den an den Ein- bzw. Ausgängen des Universalsteuergerätes angeschlossenen Komponenten die belegten Ein- bzw. Ausgänge feststellt und - dieser Feststellung entsprechende Daten nicht flüchtig speichert.

VERFAHREN UND VORRICHTUNG ZUM ERKENNEN EINES DEFEKTES ODER AUSFALLS EINES DRUCKLUFTVERBRAUCHERKREISES IN EINER ELEKTRONISCHEN DRUCKLUFTANLAGE FÜR FAHRZEUGE

Elektrische Bremsvorrichtung und Fahrzeug

Es wird eine elektrische Bremsvorrichtung bereitgestellt, die veranlassen kann, dass ein Fahrzeug sicher fährt oder anhält, selbst wenn ein Fehler oder eine Unregelmäßigkeit zumindest eine der Bauteile der elektrischen Bremsvorrichtung auftritt. Es sind umfasst: ein Kolben (4) zum Antreiben eines Bremsbelag (21,22), ein Motor (5) zum Betreiben des Kolben (4) und eine Steuereinheit (6) zum Betreiben des Motors (5); wobei die Steuereinheit (6) ausgebildet ist, den Motor (5) derart anzutreiben, sodass der Bremsbelag (21,22) von einem Scheibenläufer (1) getrennt wird, wenn ein Fehler oder eine Unregelmäßigkeit in zumindest einem von Bauteilen einer elektrischen Bremsvorrichtung (100) auftritt.

Verfahren und Vorrichtung zur Überwachung von Drehzahlsensoren

Verfahren zur Überwachung von Drehzahlsensoren zur Ermittlung der Raddrehzahl, wobei - ausgehend von einer ersten und einer zweiten Raddrehzahl eine aktuelle Schlupfzahl (ZN) ermittelt wird und - bei Vorliegen bestimmter Bedingungen die aktuelle Schlupfzahl (ZN) aufsummiert wird und - ein Fehler erkannt wird, wenn die aufsummierte Schlupfzahl (Z) einen ersten Schwellwert (ZF) übersteigt, dadurch gekennzeichnet, dass die aktuelle Schlupfzahl (ZN) aufsummiert wird, wenn - die Differenz zwischen den Raddrehzahlen größer als ein zweiter Schwellwert (ΔVS) ist und - keines der Räder durchdreht.

VERFAHREN ZUR UEBERWACHUNG DES FUNKTIONIERENS EINES ANTIBLOCKIERREGLERS

Stromversorgungssystem für ein Fahrzeug

Stromversorgungssystem für ein Fahrzeug mit einer Haupt- und einer Hilfsbatterie (20, 21), um eine elektrische Bremsvorrichtung (100) über mindestens zwei unabhängige Stromversorgungsleitungen (40, 41) mit elektrischem Strom zu versorgen, dadurch gekennzeichnet, dass - die elektrische Bremsvorrichtung (100) in mindestens zwei Bremssysteme (130, 131) unterteilbar ist, - die Hauptbatterie mindestens mit einem ersten Bremssystem (130) und einem zweiten Bremssystem (131) der mindestens zwei Bremssysteme verbunden ist und - die Hilfsbatterie (21) in Reaktion auf einen detektierten Fehlerzustand irgendeines Leiters aus der Gruppe von Leitern, die mit der Hauptbatterie (20), der Hilfsbatterie (21) oder der Bremsvorrichtung (100) verbunden sind, durch eine Schalteinrichtung (11, 13, 14) mit dem ersten Bremssystem (130) oder dem zweiten Bremssystem (131) verbunden wird.

Digital network for vehicle, has sensor/actuators connected to data bus coupled controllers

The digital network is provided for a vehicle (1) comprising a number of sensor/actuators (5), corresponding digital controllers (3) and at least one data bus (7). Each sensor/actuator (5) is connected to a respective controller (3). All controllers are interconnected via a single a multiple data bus (7), esp. parallel data bus.

Verfahren und Vorrichtung zum Überprüfen von Bremssignalen bei einem Fahrzeug

ABS braking control system e.g. for motor vehicle

The ABS braking system has a brake pressure modulator(20) in which an electric servo motor drives the spring-loaded piston, which increases the trapped volume in the wheel brake circuit, thereby reducing the brake pressure of the wheel brakes. For an improved control the current and voltage for the electric servo motor are monitored by the brake controller. The servo supply is monitored with respect to time intervals. These values are included in the self-diagnosis programme of the brake controller. The brake pressure modulator is isolated from the master cylinder, during ABS operation, by control valves.

Method and device for the reporting of faults in vehicles

A method and a device for the reporting of faults in vehicles is proposed in which, when a fault occurs, the speed of the vehicle is restricted. The extent of the speed restriction may be selected as a function of the seriousness of the fault and the length of time which has elapsed since the fault occurred. ...

Sensorsystem

Winkelgeschwindigkeits-Sensorsystem (1), das in einem Fahrzeug vorgesehen ist und mindestens zwei Winkelgeschwindigkeitssensoren (2A, 2B) beinhaltet, die einzeln Winkelgeschwindigkeitssignale (VyA, VyB) ausgeben, wobei das System eine Anomalieerfassung der Winkelgeschwindigkeitssensoren auf der Grundlage eines Vergleichs zwischen Zuständen der ausgegebenen Winkelgeschwindigkeitssignale ausführt, wobei das System aufweist: ein erstes Tiefpassfilter (23), das an jedem Winkelgeschwindigkeitssensor vorgesehen ist und dazu angeordnet ist, ein Winkelgeschwindigkeitssignal (Vy) jedes der Winkelgeschwindigkeitssensoren (2A, 2B) zu erzeugen und auszugeben, wobei das erste Tiefpassfilter eine erste Grenzfrequenz (fc1) aufweist und das Winkelgeschwindigkeitssignal (Vy) durch Entfernen einer hochfrequenzseitigen Komponente, die für einen Fahrzeugsteuervorgang nicht erforderlich ist, erzeugt; ein zweites Tiefpassfilter (123A, 123B), das außerhalb jedes Winkelgeschwindigkeitssensors (2A, 2B) angeordnet ...

Automotive braking system based on brake pedal condition

Pedal (10) depression is checked by sensor (11) supplemented by several electric fluid pressure control valves (21a-21d) to set pressure passed from source to wheel cylinder (28a,b,c,d). The valves (21) are controlled by a braking fluid controller (48) based on the brake actuator sensor output signal. A main cylinder (12) passes fluid pressure to the wheel cylinders in response to brake pedal (10) action, and several electric switching valves (26a,b,c,d) circuited between pressure control valves (21) and wheel cylinder and between main cylinder and wheel cylinders make selective connections between these. The electric valves (26) are in turn controlled by a switching controller (49). The valves (26) and respective wheels are arranged in groups of several wheels each, with the switching valves (26) allocated to the pressure control valves or valve groups, each of which contains its allotted fluid pressure control valves (21). Current supply relays allotted to control valves or their groups ...

Bremsvorrichtung für ein Kraftfahrzeug und Verfahren zur Detektion einer Beschädigung der Bremsvorrichtung

Die vorliegende Erfindung bezieht sich auf ein Verfahren zur Ermittlung von Defekten einer automatisierten Feststellbremse für ein Kraftfahrzeug wobei die Feststellbremse einen ansteuerbaren Feststellbremsaktuator aufweist, bei welchem die Identifikation einer Beschädigung der Feststellbremse auf Basis eines zeitlichen Verlaufs einer das Abgabemoment des Feststellbremsaktuators repräsentierenden Größe erfolgt, sowie eine entsprechende Vorrichtung hierzu.

Verfahren und Anordnung zur Überwachung von Fahrzeugbremsen elektronisch geregelter Bremssysteme von Fahrzeugen und Fahrzeugkombinationen auf Überlast

BRAKE-BY-WIRE-SYSTEM

Ein Kraftfahrzeug wird bereitgestellt. Das Fahrzeug beinhaltet ein Brake-by-Wire-Teilsystem, das eine Steuerung beinhaltet. Die Steuerung erhält eine Anforderung, in einen Wartungsmodus einzutreten. Als Reaktion auf die Anforderung, in den Wartungsmodus einzutreten, bestimmt die Steuerung, ob sich ein Fahrzeug in einem stabilen Zustand befindet, basierend auf dem Vergleichen mindestens einer Systembedingung mit mindestens einem Schwellenwert. Wenn sich das Fahrzeug im stabilen Zustand befindet, bewirkt die Steuerung, dass das Brake-by-Wire-Teilsystem in den Wartungsmodus eintritt. Ferner überwacht die Steuerung die mindestens eine Systembedingung gegen vordefinierte Parameter, um zu bestimmen, dass das Fahrzeug den stabilen Zustand während des Dienstmodus beibehält.

VORRICHTUNG ZUR ANSTEUERUNG VON ELEKTROMAGNETISCH BETÄTIGBAREN VENTILEN IN EINER ELEKTROHYDRAULICHEN BREMSANLAGE

VORRICHTUNG UND VERFAHREN ZUR ÜBERWACHUNG VON SENSOREN IN EINEM FAHRZEUG

Wankregelungssystem für ein Kraftfahrzeug mit Notbetrieb beim Ausfall der Wankbewegungserfassungseinrichtung

Brake system for motor vehicles, has pedal decoupling unit, separating piston devices with pressure chambers, and pressure supply device

The brake system has a pedal decoupling unit (100), separating piston devices (5a to 5d) with pressure chambers (13a to 13d), and a pressure supply device. A pressure modulation unit and an electronic controlling- and regulating unit (600) are formed as separable, independently operated assembly groups. A brake pedal (1) is provided for operating a pedal decoupling unit (100).

Betriebsverfahren für eine redundante Sensoranordnung eines Fahrzeugsystems und korrespondierende redundante Sensoranordnung

Die Erfindung betrifft ein Betriebsverfahren für eine redundante Sensoranordnung (60) eines Fahrzeugsystems, welche zwei Steuergeräte und mehrere Sensoren (1) umfasst, wobei die einzelnen Sensoren (1) in einem Normalbetrieb des Fahrzeugsystems jeweils mit einem als Primärsteuergerät (2) ausgeführten Steuergerät und in einem Notbetrieb des Fahrzeugsystems jeweils mit einem als Sekundärsteuergerät (4) ausgeführten Steuergerät gekoppelt und mit Energie versorgt werden, wobei das mit den Sensoren (1) gekoppelte Steuergerät Signale der einzelnen Sensoren (1) empfängt und auswertet. Hierbei wird zur Initialisierung der Sensoranordnung (60) eine Betriebsspannung an beide Steuergeräte angelegt und eine Überprüfung der Sensoranordnung (60) durchgeführt, wobei die Sensoren (1) in einem ersten Überprüfungsschritt mit einem ersten Steuergerät gekoppelt und von diesem überprüft und von einem zweiten Steuergerät entkoppelt werden, anschließend übergibt das erste Steuergerät die Sensoren (1) an das zweite ...

Simulatorvorrichtung für ein Fremdkraftbremssystem eines Fahrzeugs und Verfahren zum Betreiben einer Simulatorvorrichtung eines Fremdkraftbremssystems eines Fahrzeugs

Die Erfindung betrifft eine Simulatorvorrichtung (10) für ein Fremdkraftbremssystem eines Fahrzeugs, welche zumindest während einer Fremdkraft-bewirkten Abbremsung des Fahrzeugs in einen Simulatormodus steuerbar ist, in welchem während einer Betätigung eines Bremspedals (12) eine der Betätigung entgegen gerichtete Gegenkraft (Fg) auf das Bremspedal (12) ausübbar ist, wobei die Simulatorvorrichtung (10) zumindest während einer mittels einer Fahrerbremskraft bewirkten Abbremsung des Fahrzeugs zusätzlich in zumindest einen weiteren Modus steuerbar ist, in welchem das Bremspedal (12) Gegenkraft-frei vorliegt, und wobei die Simulatorvorrichtung (10) mittels mindestens eines Fehlermeldesignals (16) in einen Fehlerüberbrückungsmodus als den mindestens einen weiteren Modus so steuerbar ist, dass mittels der Simulatorvorrichtung (10) eine Unterstützungskraft (Fu) ausübbar ist, mittels welcher ein Reibbremsmoment mindestens einer Reibbremse des Fremdkraftbremssystems mittels der Unterstützungskraft ...

Erfassung eines losen Rades

Die offenbarte Erfindung nutzt ein Raddrehzahlsignal zum Erfassen einer Radanomalie, wie etwa eines losen Rades oder eines drucklosen Rades. Das Raddrehzahlsignal wird als Basis zum Ermitteln eines ersten und eines zweiten Erfassungssignals verwendet. Eine weitere Basis zum Ermitteln des ersten und zweiten Erfassungssignals besteht aus einem ersten bzw. zweiten Referenzsignal. Die Anomalie beispielsweise eines losen Rades wird gemäß der Lehre der Erfindung ermittelt, wenn wenigstens eines der Erfassungssignale einen Schwellenwert übersteigt. Insbesondere betrifft die Offenbarung Verfahren, Systeme und Computerprogrammprodukte zum Erreichen des genannten Ziels.

Fahrzeugparksystem-Ausfallmanagement

Ein System umfasst ein autonomes Untersystem, welches erste und zweite Bremsmodule umfasst. Jedes der Module umfasst einen Prozessor und einen Speicher, wobei der Speicher Anweisungen speichert, welche vom Prozessor ausführbar sind, um einen Fehler zu erkennen. Das System umfasst ferner ein Bremsuntersystem, welches programmiert ist, um einen Bremsmechanismus in Reaktion auf ein Signal vom zweiten Bremsmodul zu betätigen. Das autonome Untersystem ist ferner programmiert, um eines der Bremsmodule auszuwählen, um dem Bremsmechanismus ein Signal bereitzustellen, abhängig davon, ob ein Fehler erkannt wird.

Elektrische Ausrüstung eines Fahrzeugs mit einer wenigstens teilweise elektrischen Brems- und Lenkeinrichtung mit hoher Verfügbarkeit

Die Erfindung betrifft eine Elektrische Ausrüstung eines Fahrzeugs mit einer wenigstens teilweise elektrischen Brems- und Lenkeinrichtung beinhaltend eine elektrischen oder elektro-mechanische Lenkeinrichtung (26) mit oder ohne durchgehende mechanische Verbindung zwischen einem Lenkrad (28) und einem Lenkgetriebe (30) sowie mit einer elektronischen Lenksteuereinrichtung und einem elektrischen Lenksteller (72), und eine Betriebsbremseinrichtung (124).Die Erfindung sieht vor, dass als Betriebsbremseinrichtung eine elektropneumatische Betriebsbrems-einrichtung (124), insbesondere ein elektronisches oder elektronisch bremsdruckgeregeltes Bremssystem (EBS) vorgesehen ist, welches eine elektropneumatische Betriebsbremsventileinrichtung (1), eine elektronische Bremssteuereinrichtung (EBS-ECU), elektropneumatische Modulatoren (114, 116) sowie pneumatische Radbremsaktuatoren (118, 120) beinhaltet, wobei die elektropneumatische Betriebsbremsventileinrichtung (1) ein Betriebsbremsbetätigungsorgan ...

Steuervorrichtung und Verfahren zum Betreiben eines Bremssystems eines Fahrzeugs

Die Erfindung betrifft eine Steuervorrichtung (10) und ein Verfahren zum Betreiben eines Bremssystems eines Fahrzeugs durch Ansteuern mindestens einer elektrisch ansteuerbaren Bremssystemkomponente des Bremssystems unter Berücksichtigung mindestens einer Größe und/oder mindestens einer Relation, welche jeweils eine physikalische Eigenschaft mindestens einer der Bremssystemkomponenten des Bremssystems wiedergibt, und zusätzlich durch Messen und/oder Schätzen mindestens einer Temperatur (T, T, T) mindestens einer der Bremssystemkomponenten des Bremssystems und Auslesen für die mindestens eine gemessene und/oder geschätzte Temperatur (T, T, T) von einer Speichereinheit (38) der mindestens einen dafür hinterlegten Größe und/oder der mindestens einen dafür hinterlegten Relation von einer Speichereinheit (38).

Verfahren und Vorrichtung zum Detektieren von Restdruck in einem Bremssystem, insbesondere in einem Bremszylinder

Durch kontinuierliche "grobe" Überwachung des Drucks im Bremssystem wird festgestellt, ob ein Verdacht auf Restdruck besteht. Wurde ein solcher Restdruckverdacht festgestellt, so erfolgt ggf. mehrfach wiederholend eine Feinüberwachung, wobei ein Druckentlastungsorgan des Bremssystems geöffnet wird und sensiert wird, ob und ggf. wie stark der sensierte Istdruck absinkt.

Method for controlling the operation of a vehicle system of a vehicle controller comprises monitoring the function of a brake pressure sensor and switching the vehicle system to a first error mode

Method for controlling the operation of a vehicle system (8) of a vehicle controller comprises monitoring the function of a brake pressure sensor (2) using a corresponding monitoring unit (9) and switching the vehicle system to a first error mode when the signals of the brake pressure sensor and the brake signal emitter (3) do not agree. An independent claim is also included for a device for controlling the operation of a vehicle system of a vehicle controller. Preferred Features: The brake pressure sensor is monitored depending on an offset error or reinforcing error. The vehicle system is partially limited in its function in a first error mode and completely deactivated in a second error mode.

Verfahren und Vorrichtung zur Überwachung des Rauschens eines Sensors

Die vorliegende Erfindung betrifft ein Verfahren und eine Vorrichtung zur Überwachung des Rauschens eines Sensors sowie eine Anwendung eines erfindungsgemäßen Verfahrens im Fahrzeugbereich zum Ermitteln eines Reibwertes zwischen Reifen eines Kraftfahrzeuges und einer Straßenoberfläche. Um ein preiswertes sowie zuverlässig arbeitendes Verfahren zur Überwachung eines Sensor-Rauschens und eine entsprechende Vorrichtung zu schaffen, um u. a. systemrelevante Informationen zu erhalten, wird vorgeschlagen, dass ein Einfluss spektraler Anteile des Sensorrauschsignals ermittelt und mit Vorgabewerten verglichen wird.

Bremsvorrichtung für Fahrzeuge, die eine Betriebsbremsanlage und eine Dauerbremsanlage aufweisen

Die Betriebsbremsanlage und die Dauerbremsanlage eines Fahrzeuges werden in Abhängigkeit vom aktuellen Fahrzustand des Fahrzeuges angesteuert, und zwar gemeinsam über das Bremspedal, wobei die Bremskraftaufteilung automatisch gesteuert erfolgt. Bei Bremsungen, bei denen die Bremskraft der Dauerbremsen ausreicht, kommen primär bzw. ausschließlich die Dauerbremsen zum Einsatz und nur bei stärkeren Bremsungen kommen die Dauerbremsanlage und die Betriebsbremsanlage gemeinsam zum Einsatz. Mit der automatischen Steuerung kann bei einer Auswertung des Fahrzustandes auch gezielt die Aufteilung der Bremskräfte auf das Zugfahrzeug und das Anhängerfahrzeug bzw. den Auflieger verändert werden sowie die Bremskraftaufteilung zwischen einzelnen Zugfahrzeugachsen und zwischen Dauerbremsen und der Betriebsbremse. Durch eine derartige gezielte Beeinflussung der Bremskraftaufteilung kann die Fahrstabilität verbessert werden. Ferner kann damit gezielt auf "Fahrzeugfunktionen" zwischen dem Zugfahrzeug und dem ...

Method for function monitoring of control device e.g. for motor vehicle, involves querying specified memory locations during operation of control device

A control device function monitoring method in which a main computing device (4) and at least one auxiliary computing device (5) can access a memory or storage element (6). During operation of the control device (1), the content of a specifiable memory location of the memory element (6) is queried by at least one of the auxiliary devices (5) at specified times, where the content during a working main computer device (4) has been written into location by/from the latter previously with a specifiable value. Independent claims are given for (A) a computer program and for (B) a control device for operating the end-stages.

X-By-Wire-System für ein Kraftfahrzeug

X-By-Wire-System zum Steuern des Bremsens und Lenkens in einem Kraftfahrzeug mit einer Hauptsteuereinheit (14, 114), einem Bremssystem, das eine elektrisch bedienbare Bremse (16, 116) für jedes Rad des Fahrzeuges, eine Bremsensteuereinheit (38, 138) für jede elektrisch bedienbare Bremse und eine Handbremse (20, 120) umfaßt, einem Lenksystem, das eine elektrisch bedienbare Lenkeinrichtung (24, 124) umfaßt, die die Vorderräder des Fahrzeuges verbindet, einem Kommunikationsmittel (26, 148, 150, 152) für die Hauptsteuereinheit, um Betätigungssignale zum Bremssystem zu schicken und um Betätigungssignale zum Lenksystem zu schicken, einem Überwachungsmittel (28, 148, 150, 152), das Sensoren umfaßt, die dem Bremssystem und dem Lenksystem zugeordnet sind, um vorbestimmte Parameter zu erfassen und der Hauptsteuereinheit (14, 114) Signale der vorbestimmten Parameter zu liefern, wobei die Hauptsteuereinheit (14, 114) das Bremssystem und das Lenksystem entweder unabhängig oder gemeinsam in Abhängigkeit ...

Verfahren, Programmprodukte und Systeme zum Prüfen einer nicht korrekten Istallation von Fahrzeugsensoren

Es wird ein Verfahren zum Prüfen einer nicht korrekten Installation von Sensoren eines Fahrzeugs bereitgestellt. Das Verfahren umfasst die Schritte, dass eine erste Richtungsangabe auf der Grundlage von zumindest teilweise einem Gierwert ermittelt wird, eine zweite Richtungsangabe auf der Grundlage von zumindest teilweise einem Lenkwinkelwert ermittelt wird und die zweite Richtungsangabe geändert wird, wenn die erste Richtungsangabe und die zweite Richtungsangabe zueinander im Widerspruch stehen.

Brake operation built-in test equipment

Aircraft electric breaking system

TESTING AND SPEED CONTROL OF ABS PUMP MOTORS

Method and apparatus for monitoring operation of a vehicle braking system

Testing autolock braking

Antilock braking systems of vehicles are tested by generating a signal simulating a speed of rotation of the wheel (24) of the vehicle and feeding the signal to the antilock braking system (20, 21) of the vehicle. The vehicle brakes are applied and the instantaneous brake torque is measured over a predetermined period so as to assess the operation of the antilock braking system.

HYDRAULIC BRAKING SYSTEM

A hydraulic braking system for an automotive vehicle is provided with a power source for generating a hydraulic power pressure, a master cylinder, a hydraulic booster for introducing the hydraulic power pressure and actuating the master cylinder in response to operation of a brake operating member, a wheel brake cylinder for braking a road wheel, a changeover valve, and anti-skid control device for actuating the changeover valve into a position where the wheel brake cylinder is communicated with the booster and regulating the hydraulic pressure in the wheel brake cylinder on the basis of the hydraulic power pressure in the booster when the road wheel is in a slip condition. The hydraulic braking system includes a failure detecting feature for producing a power pressure failure signal when the hydraulic power pressure in the booster is lower than the master cylinder pressure by at least a predetermined value, an anti-skid prohibiting device for prohibiting the anti-skid control operation ...

SWITCHING ARRANGEMENT FOR THE CONTROL OF THE HYDRAULIC PUMP OF THE AUXILIARY PRESSURE SUPPLY SYSTEM OF AN AUTOMOTIVE BRAKE SYSTEM

Method of testing anti-lock brake system

An apparatus for testing an anti-lock brake system has rolls (11, 12) and device for detecting rotational changes of the rolls. The test is performed by running a vehicle having mounted thereon the anti-lock brake system while wheels of the vehicle are placed on the rolls (11, 12), actuating the anti-lock brake system when a predetermined speed has been attained, and judging operating conditions of the anti-lock brake system from rotational changes of the rolls (11, 12) at the time of braking. In the apparatus, the friction coefficient of each of the rolls (11, 12) is set to such a value that a frictional force to act between each of the rolls (11, 12) and each of the wheels at the time of braking exceeds an inertia force of each of the rolls (11, 12). Also the inertia weight of each of the rolls (11, 12) is set to such a value that deceleration of each of the wheels at the time of braking can be increased to a predetermined level which is required to start an anti-lock control and that ...

Apparatus for testing anti-lock brake system

A METHOD OF, AND A DEVICE FOR, CONTROLLING AND/OR ADAPTING THE BRAKE PRESSURE IN VEHICLE BRAKE SYSTEMS

A method and an apparatus for controlling characteristic curves in a vehicle brake system having a hydraulic brake booster. At least one supplementary piston is incorporated in the output pressure lines forming preferably closed brake circuits of the brake booster, the supplementary piston being triggered in a regulated manner both for controlling or varying the characteristic curve for anti-skid braking pressure modulation. Optionally, in order to attain predetermined characteristic curve courses, modified travel magnitudes of the brake pedal actuation or of the booster piston are compared with the actual pressure in the brake circuits. The triggering is effected via the magnetic valves.

Fail safe electrical brake control system for aircraft

Electronic control apparatus for a vehicle

Fault-tolerant electronic braking system

ELECTRONIC BRAKING SYSTEM

Control of an internal combustion engine of a motor vehicle

Brake system for a motor vehicle

Electronic control apparatus for a vehicle

Method of diagnosing failure in an electronic control unit

The method diagnoses failure in an electronic control unit 2. The electronic control unit 2 operates as part of a brake module 1 and contains mechanical components 3, 5, and at least an integrated sensor 7 able to detect vibration. The method includes the following steps: memorizing a normal vibration pattern provided by at least one mechanical component that moves inside the electronic control unit 2 in normal working condition; then, at every wake-up of the electronic control unit 2, reading the individual vibration pattern given out by any of the mechanical components that move inside the electronic control unit 2; comparing the memorized vibration pattern with the read vibration pattern for each mechanical component 3, 5, and evaluating the differences between the memorized vibration pattern and the read vibration pattern against predefined thresholds; and initiating an appropriate action, according to the situation.

Vehicle braking system

Brake position sensor unit

Trailer braking system

A brake system for a trailer vehicle with multiple axles. The system includes first and second pneumatic circuits (through reservoirs 3,4) for supplying air pressure to brake devices at the axle wheel ends 33-38. Also included are: a first electronic control unit (ECU) 17 (e.g. part of trailer brake module 6), which controls pressure from the circuits to the wheel ends; and a second ECU 7, which controls first 41, 42 and second 43-46 pressure control valves (PCVs) on each side of the vehicle to output pressure to the wheel ends, e.g. for redundancy in case of pneumatic failure. The module 6 may include a relay emergency anti-compounding valve REV-AC 30, the output of which is connected to spring brakes at the wheel ends for independent spring braking, e.g. in case of electrical fault. The PCVs may each include two 2/2 solenoid valves, one normally closed and one normally open. Between module 6 and the PCVs there may be a selector valve 40 including two or three 3/2 valves, and a secondary ...

Vehicle braking system

A vehicle braking system which includes at least one primary feature and at least one redundant feature. The primary feature may include an electronic control unit (ECU) 18, 20, 22; a supply line 12, 14; a control valve 54, 56 for controlling flow of fluid from a pressurise fluid source to a modulator 50; a modulator 50 and/or internal features of a modulator valve; a build valve 34, 44; dump valve 36, 46; or a pneumatic control line 28, 30. The braking control system is operable to determine whether a predetermined condition is met, the condition not indicative of failure of the primary or redundant features. The condition may be braking demand requiring a braking pressure of above a certain pressure threshold (e.g. above 50kPa), or may be a predetermined relative frequency of use of the redundant feature and primary feature (e.g. 50% usage of each). If the predetermined condition is met, the braking control system causes the primary feature to be operable and if the predetermined condition ...

Monitoring a microcomputer based electronic control unit for an anti-skid braking system

A microcomputer based electronic control unit for an anti-skid braking system includes monitoring means for testing the correct operation of the anti-skid braking system, including the electronic control unit. The disabling means includes microcomputer resetting means which in the event of program execution falling out of synchronization resets the microcomputer. The monitoring means test whether or not the wheel speed sensors are short circuited or disconnected. The unit also includes a load dump protection function, an electromagnetic interference suppression circuit and a warning light drive which may additionally be used to output diagnostic information.

Anti-skid dual-circuit brake systems

A dual-circuit brake system which is combined with an anti-wheel-lock apparatus, also known as an anti-skid braking system. Between the two brake circuits I and II, in the vicinity of the anti-skid magnetic valves, a pressure sensor is provided which responds when there are unequal pressures in the two brake circuits I and II and with the aid of pre-programmed test cycles in an electronic control unit of the anti-skid braking system enables the monitoring of the functioning of the magnetic valves. The apparatus is preferably usable in passenger vehicles in the higher price ranges.

ANTI-SKID CONTROL SYSTEMS

... 1400335 Antiskid braking systems ALFRED TEVES GmbH 27 Sept 1973 [5 Oct 1972] 45215/73 Heading F2F In an arrangement for testing the operation of an antiskid braking system including an ignition switch 4 which operates a testing circuit 7 to produce a signal causing the system to go through one cycle of operation, a circuit coupling the system and testing circuit allows the signal to be coupled only if the hydraulic brakes are not in operation, the parking brake is in operation or an automatic transmission gear selector is set to the park position. Wheel sensors 1 supply signals to a control circuit 2 which transmits actuating signals to brake control valves 3 and testing circuit 7 energizes the valves for a short period, a control light 5 which lights up upon actuation of switch 4 being extinguished if the system is working satisfactorily.

CONTROL CIRCUITS FOR BRAKE ANTI-LOCKING CONTROL SYSTEMS

... 1440547 Aritiskid braking systems; tractor-trailer braking systems ROBERT BOSCH GmbH 18 Oct 1974 [19 Oct 1973] 45157/74 Heading F2F In an arrangement for rendering the antiskid control system of a tractor vehicle inoperative when the tractor vehicle is connected to a trailer not having an antiskid braking system the trailer is supplied with electrical power through a multi-pole connector 3, 4 and a lead from the power source has connected therein a sensor 16 which monitors the current flowing through the lead and the operation of the tractor system 5 is controlled in dependence upon the current flow. The sensor 16 may be a measuring resistor connected to a threshold switch 17 which is triggered to enable the tractor antiskid system to work or provides a warning signal if the system 5 is disabled.

ANTILOCK BRAKING APPARATUS

WARNING FAULTS IN BRAKING SYSTEMS

WHEEL LOCK CONTROL SYSTEMS

... 1536257 Anti-skid braking systems GENERAL MOTORS CORP 22 Sept 1977 [29 Sept 1976 (2)] 39523/77 Heading F2F A wheel lock control system comprises components 10-26 to provide a wheel speed signal (at 28), a deceleration switch 30 responsive to the wheel speed signal and effective to provide a control signal which is initiated when the rate of change of wheel speed exceeds a predetermined threshold deceleration, a "cycle depth" integrator 32 effective to generate cycle depth signal, (defined below), and control components 40-44 responsive to the control signal and the cycle depth signal for effecting wheel brake release during the period of the control signal and during the period that the cycle depth signal exceeds a reference value, the cycle depth integrator including means responsive to the wheel speed signal and effective to provide a wheel acceleration or deceleration signal, means effective during brake application to provide a deceleration reference signal representing a maximum vehicle ...

ANTI-SKID REGULATING DEVICES FOR MOTOR VEHICLES

ANTI-LICK CONTROL DEVICE

ANTI-LOCK BRAKING SYSTEM

Anti-skid braking system

Interference in signals from a wheel sensor of an anti-skid braking system arising, for example, as a result of mechanical vibrations of the components of the wheel sensor is reduced by means of a controllable low-pass filter 4. The filter is either switched out of circuit as the frequency of the sensor signals rises or the cut-off frequency of the filter is increased to keep it above the frequency of the sensor signals. ...

ANTI-LOCK BRAKING SYSTEMS

BRAKE SECURITY SYSTEM FOR A TRACE-LED VEHICLE AND PROCEDURE FOR THE MONITORING OF THE CURRENT BRAKE ABILITY OF A TRACE-LED VEHICLE AND FOR INTRODUCING APTITUDES SAFETY REACTIONS

UEBERWACHUNGSSCHALTUNG FUER EINEN DREHZAHLGEBER

BLOCKIERSCHUTZREGELSYSTEM FUER DRUCKMITTELBE- TAETIGTE FAHRZEUGBREMSEN EINES STRASSENFAHRZEUGES

VERFAHREN ZUR UEBERPRUEFUNG EINES ANTIBLOCKIERREGEL-SYSTEMS UND VORRICHTUNG ZUR DURCHFUEHRUNG DIESES VERFAHRENS

ARRANGEMENT FOR THE ENTERPRISE A SENSOR

MONITORING CIRCUIT FOR A TACHOGENERATOR

ELECTROMECHANICAL SYSTEM AND PROCEDURE FOR THE RECOGNITION OF FREEZING BEGINNING OF AN ELECTROMECHANICAL SYSTEM

BRAKE SYSTEM WITH DISTRIBUTED ELECTRONIC CONTROL UNITS

TOWING VEHICLE WITH ANTI-SKID SYSTEM.

PROCEDURE AND PROTECTION CIRCUIT.

ELECTRONIC BRAKE SYSTEM FOR ROAD VEHICLES.

Pressure control valve arrangement having a pressure medium channel of oval cross-section

A pressure control valve arrangement is described for controlling a fluid pressure in an ABS brake system of a vehicle such that, in the event of a tendency of individual wheels of the vehicle to lock, the brake pressure in at least one associated brake cylinder can be adaptively adjusted, including: a housing in which is formed at least one pressure-medium-conducting pressure medium duct and in which is provided a diversion of the flow of the pressure medium within the pressure medium duct from a portion of the pressure medium duct leading in one direction into a portion of the pressure medium duct leading in another direction, in which the pressure medium duct is produced together with the housing by primary forming, and in which the cross section of the pressure medium duct is oval and the major dimension of the oval cross section and the central axis of the pressure medium duct are arranged in a common plane, and the minor dimension of the oval cross section is perpendicular to the plane.

Motor vehicle braking system having a hydraulically actuated service braking system and an electormechanically actuated braking system

The invention relates to a motor vehicle brake system having a hydraulically actuatable service brake system and an electromechanically actuatable brake system, including an operating element HMI, in particular for activating a parking brake function, an electronic control device (EPB-ECU) for activating an electromechanical actuator of the electromechanically actuatable brake system, and an electrohydraulic control unit (HECU) associated with a service brake and serving to control or regulate hydraulically implemented service brake functions, driving stability functions and/or braking assistance functions. It is an aim of the invention to contribute to reducing the stress on parts or components of the brake system. It is proposed that an electronically controlled hydraulic pressure conditioning process is carried out in integrated brake calipers after hydraulic actuation of the brake, it being further provided that the electromechanical brake system generates additional application forces only after the hydraulic pressure conditioning process.

Brake system

A brake system including: (a) a manual hydraulic pressure source; (b) a power hydraulic pressure source; (c) a high pressure generator for generating high pressure, by utilizing pressure of the power hydraulic pressure source; (d) a common passage to which first and second brake cylinders and the high pressure generator are connected; (e) a high-pressure-generator cut-off valve disposed between the common passage and the high pressure generator; (f) a first manual-pressure-source passage connecting a first individual passage and the manual hydraulic pressure source; (g) a first manual-pressure-source cut-off valve provided in the first manual-pressure-source passage; (h) a first valve provided between the second brake cylinder and a connected portion of the first individual passage which is connected to the first manual-pressure-source passage; and (i) a pressure-supply control device for controlling supply of pressure to the brake cylinders, by controlling the high-pressure-generator cut-off valve, first valve and first manual-pressure-source cut-off valve.

System and method for aircraft braking system usage monitoring

The system and method for monitoring wear of one or more aircraft parts, such as an aircraft brake, an aircraft tire, a standby system, and landing gear, utilize one or more sensors to sense a parameter of usage, and an estimate of usage of the part can be determined based upon the signal indicating the sensed value of the parameter of usage of the aircraft part. A plurality of sensors can be provided for sensing usage of a plurality of parts of the aircraft, and the estimate of usage of the part can be stored for access of the estimate by ground personnel.

Systems and methods for monitoring and controlling tractor/trailer vehicle systems

A status of one or more subsystems positioned on one or more trailers is communicated to a tractor electrically and mechanically connected to the trailer. A spread spectrum data communications signal representing the status of a respective subsystem is superposed on the power bus. The status of the respective subsystem can then be determined from the spread spectrum data communications signal. Preferably, the status of the subsystem is indicated to an operator positioned on the tractor. A command for controlling a subsystem on a trailer can also be communicated from the tractor to the trailer over the power bus. A spread spectrum data communications signal representing the command is produced on the power bus, and the subsystem is controlled based on the spread spectrum data communications signal. Preferably, the command is received from an operator positioned in the tractor.

Process for controlling a start-stop operation of a vehicle having a hybrid drive, and a corresponding vehicle

A process for controlling a vehicle start-stop operation having a hybrid drive with an internal-combustion engine and an electric motor, a service brake with an ABS and an electric parking brake, includes: determining, monitoring and analyzing performance parameters of the vehicle, the internal-combustion engine, the electric motor, the service brake and the parking brake; automatically releasing the parking brake in the case of a starting prompt because of determined performance parameters; driving the vehicle by the electric motor for the start; starting the engine by the electric motor if the engine is switched off; driving the vehicle by the electric motor and the engine; activating a generator operation of the electric motor in the case of a braking prompt because of determined performance parameters; activating the service brake; and automatically locking the electric parking brake when the vehicle is stopped after a previously definable deceleration time.

Wheel End Condition Detection

An enhanced wheel data processing unit may analyze tire air temperature data from a tire pressure monitoring system (TPMS) and antilock brake system (ABS) wheel speed sensor fault codes from an ABS controller within a vehicle. When the enhanced wheel data processing unit determines that the tire air temperature is above a predetermined threshold for a given tire and that an ABS wheel speed sensor fault code exists for the wheel end corresponding to the same tire, the enhanced wheel data processing unit may initiate a vehicle shutdown or derate procedure. The vehicle shutdown or derate procedure may include instructions to give an operator of the vehicle a warning indicator for a predetermined time period before shutting down or derating the engine power to the vehicle.

Vehicle brake hydraulic control apparatus

A vehicle brake hydraulic control apparatus according to one embodiment includes: a suction valve; a pump; a motor for driving the pump; and a control unit controlling the suction valve and the motor through connection/disconnection of power thereto. The control unit includes: a detection module configured to detect a back electromotive voltage generated due to an inertia rotation of the motor after disconnection of power; a voltage check module configured to check whether a voltage condition is satisfied or not that the back electromotive voltage is equal to or less than a given voltage; and a time check module configured to check whether a time condition is satisfied or not that a given time has passed after the voltage condition has been satisfied. And, the control unit closes the suction valve when the time condition is satisfied.

Electronic control unit configuration tool

A tool for configuring a replacement electronic control unit for a vehicle is provided. The tool includes a computer storage medium having a computer program encoded thereon which may be stored on an electronic module or installed on a computing device that connects to a communications bus in the vehicle. The program includes code for accessing a first memory associated with an original electronic control unit for the vehicle, retrieving a configuration for the original electronic control unit from the first memory, associating the configuration with a vehicle identification number associated with the vehicle in a second memory remote from the vehicle and downloading the configuration from the second memory to a third memory associated with the replacement electronic control unit for the vehicle.

Electromechanical braking system for an aircraft

The invention relates to an aircraft braking system having brakes with electromechanical braking actuators (103) adapted to press selectively against associated stacks of disks in order to generate a braking torque on associated wheels of the aircraft; at least one control module (130) receiving braking setpoints and responding by generating a braking command (121); and at least one power module (120) responding to the braking command by delivering AC power to the motors of actuators connected to the power module so that the motors develop a braking force corresponding to the braking setpoints. According to the invention, the control module includes a digital processor stage (131) and an analog processor unit (135).

Zone driving

A roadgraph may include a graph network of information such as roads, lanes, intersections, and the connections between these features. The roadgraph may also include one or more zones associated with particular rules. The zones may include locations where driving is typically challenging such as merges, construction zones, or other obstacles. In one example, the rules may require an autonomous vehicle to alert a driver that the vehicle is approaching a zone. The vehicle may thus require a driver to take control of steering, acceleration, deceleration, etc. In another example, the zones may be designated by a driver and may be broadcast to other nearby vehicles, for example using a radio link or other network such that other vehicles may be able to observer the same rule at the same location or at least notify the other vehicle's drivers that another driver felt the location was unsafe for autonomous driving.

Electrical leakage diagnosis apparatus for vehicle using insulation resistance sensor and control method thereof

Disclosed is an electrical leakage diagnosis apparatus for a vehicle which uses an insulation resistance sensor. The apparatus includes an insulation resistance sensor; a main switching part; and a battery power management part configured to terminate the operation of a driving part so as to control a driving motor of a vehicle when the value of a first insulation resistance outputted from the insulation resistance sensor is less than a previously set threshold value, and to determine that an insulation breakage has occurred in one or more driving components when the value of a second insulation resistance, measured after terminations of the driving components, exceeds the threshold value and to terminate the operation of the vehicle by turning off the main switching part so that electrical power supplied from the high voltage battery to the electrical field loads of a vehicle is disconnected.

Abnormality determination device and method of longitudinal acceleration sensor

The running control device and method according to the present invention are those for determining abnormality of a longitudinal acceleration sensor which detects vehicular longitudinal acceleration that is used in a vehicle running control. An integrated value of a vehicular longitudinal acceleration that is detected by the longitudinal acceleration sensor is calculated, and determination whether or not the longitudinal acceleration sensor is abnormal is conducted on the basis of the integrated value and a vehicle speed based on vehicle wheel speeds. The calculation of the integrated value is initiated when a situation where the vehicle speed based on vehicle wheel speeds is zero and the increasing rate of the detected vehicular longitudinal acceleration is equal to or larger than a reference value for the increasing rate continues for a period which is equal to or larger than a reference value for the initiation of calculation.

Apparatus for Setting Park Brakes of a Heavy Vehicle During a Failure of a Service Brakes Holding Function of the Vehicle

An apparatus is provided for a vehicle having components of a parking brake system and components of a service brake system. The apparatus comprises a normally-energized solenoid operatively coupled to components of the parking brake system and for, when de-energized, exhausting air pressure in at least some components of the parking brake system to set park brakes. The apparatus further comprises an electronic controller arranged to (i) monitor a combination of one or more signals indicative of a service brakes holding function, (ii) monitor a combination of one or more signals indicative of a fault condition, and (iii) provide one or more signals to de-energize the normally-energized solenoid to exhaust air pressure in at least some components of the parking brake system and thereby to set park brakes when both signals indicative of a service brakes holding function and signals indicative of a fault condition of the vehicle are detected.

Acceleration Detection Apparatus

Provided is an acceleration detection apparatus installed in a vehicle and including a plurality of acceleration sensors having different characteristics, a function to input diagnosis signals in order to diagnose the outputs of the acceleration sensors and diagnose the fault detection functions while the vehicle stops, and a function to compare the outputs of the sensors in order to detect a fault while the vehicle runs.

MOTOR VEHICLE

A motor vehicle includes a plurality of wheels and a brake system, which has brakes, which can be hydraulically actuated and are each associated with a wheel. The brakes can be actuated by at least one brake circuit which can be operated by a brake booster. The brake booster can be actuated by a brake pedal to be pressed by the driver. At least one pressure-generating and/or pressure-accumulating device, controlled by a control device to modulate the hydraulic pressure within the brake circuit. A second pressure-generating and/or pressure-accumulating device is provided in the brake circuit to automatically increase the pressure within the brake circuit in dependence on demand independently of the first pressure-generating and/or pressure-accumulating device, when a malfunction is detected in the brake system. 19.-. (canceled)10. A motor vehicle , comprising:a plurality of wheels; and hydraulically actuatable brakes operably connected to the wheels in one-to-one correspondence,', 'at least one brake circuit configured for actuation of the brakes,', 'a brake booster operably connected to the brake circuit and actuated by a driver through actuation of a brake pedal,', 'a first member selected from the group consisting of a pressure generating device and a pressure storage device, said first member being configured for modulation of hydraulic pressure within the brake circuit,', 'a control device configured to control the first member, and', 'a second member selected from the group consisting of a pressure generating device and a pressure storage device and disposed in the brake circuit, said second member being configured to automatically increase pressure inside of the brake circuit independently of the first member, when a malfunction is detected in the brake system., 'a braking system including;'}11. The motor vehicle of claim 10 , further comprising a switchable valve claim 10 , said second member being coupled to the brake circuit via the switchable valve and ...

REDUNDANT POWER SUPPLY FOR BRAKE SYSTEM

Furthermore, a local control unit for a brake system is described. The control unit serves to actuate an electromechanical brake of the brake system of a wheel and according to one exemplary embodiment has a first connection for a main power supply and a second connection for a generator which is coupled to the wheel and which provides a standby power supply for the control unit. 1: A brake system comprising:two or more wheels, which are each coupled to an electric brake;a local control unit for each of the electric brakes, wherein each of the local control units is configured to actuate a respective electric brake in accordance with a control signal;a central brake control unit which is configured to generate the control signals for the local control units; andan electric generator for each of the wheels, wherein each of the electric generators is coupled to a respective wheels and each of the electric generators is configured to provide a standby power supply at least for a respective local control unit of the respective electric brake of the respective wheel.2: The brake system according to claim 1 ,wherein each of the local control units includes a supply connection for a main power supply.3: The brake system according to claim 1 ,wherein each of the electric generators is electrically connected to the respective local control unit of the respective electric brake of the respective wheel, in order to provide the standby power supply for the respective local control unit in the event that a main power supply is not available.4: The brake system according to claim 1 ,wherein a respective electric generator coupled to a first wheel is configured to be electrically connected to the respective local control unit of the respective electric brake of a second wheel in order to provide a backup power supply for the respective local control unit of the respective electric brake of the second wheel in the event that a main power supply is not available.5: The brake system ...

Vehicle brake system

A vehicle brake system includes a slave cylinder configured to drive an electric motor and generate a brake fluid pressure by moving pistons with a ball screw shaft; normally open type master cut valves that communicate/shut off between the slave cylinder and a master cylinder; and a control unit that controls the electric motor to close the master cut valves and limit a displacement of the ball screw shaft on the basis of a reference position during operation of a VSA device.

Motor vehicle

The invention relates to a motor vehicle comprising: a number of wheels; a brake system having hydraulically actuatable brakes corresponding to each wheel; at least one brake circuit via which the brakes can be actuated; a brake booster via which the brake circuit can be operated, said brake booster being actuatable via a brake pedal to be actuated by the driver; and at least one pressure generation device and/or pressure accumulator device, which can be controlled by a control device, and via which the hydraulic pressure inside the brake circuit can be modulated. At least one electric motor ( 9 ) is provided, which motor is used in the event of a detected failure inside the brake system ( 2 ) to generate a deceleration torque by automatically switching into a generator operation, in order to brake the vehicle ( 1 ) until same has reached a standstill.

LOOSE WHEEL DETECTION

The disclosed invention makes use of a wheel speed signal to detect a wheel anomaly such as a loose wheel or a wheel with zero pressure. The wheel speed signal is used as a basis to determine a first and a second detection signal. A further basis for determining the first and second detection signals are a first and second reference signal, respectively. The anomaly of e.g. a loose wheel is detected, according to the teaching of the invention if at least one of the detection signals exceeds a threshold. In particular, the disclosure relates to methods, systems and computer program products to achieve the mentioned objective. 1. Method of detecting a loose wheel of a vehicle , comprising:obtaining a wheel speed signal t(n) indicative of a wheel speed of a wheel of a vehicle,determining a first detection signal on the basis of the wheel speed signal t(n) and a first reference signal,determining a second detection signal on the basis of the wheel speed signal t(n) and a second reference signal, the first detection signal exceeds a first detection threshold,', 'the second detection signal exceeds a second detection threshold., 'determining that the wheel of the vehicle is a loose wheel if at least one of the following conditions is met2. The method of claim 1 , wherein determining the first detection signal comprises:{'sub': l', 'l, 'estimating an imperfection signal {circumflex over (δ)}from the wheel speed signal t(n), which imperfection signal {circumflex over (δ)}being indicative of an imperfection of the wheel speed signal t(n) as compared to the actual wheel speed of the wheel of the vehicle.'}3. The method of claim 2 , whereinthe wheel speed signal t(n) is obtained from a wheel speed sensor sensing the wheel speed of the wheel of the vehicle, and{'sub': l', 'l, 'estimating the imperfection signal {circumflex over (δ)}comprises estimating a sensor imperfection value {circumflex over (δ)}indicative of the sensor imperfection of the wheel speed sensor.'}4. The ...

CONTROL DEVICE AND CONTROL METHOD

A controller includes a failure detection unit that detects a failure in a first power supply system, and a power supply system control unit that closes a relay in a case where an execution of an automatic parking function starts and, during the execution of the function, causes the first power supply system to supply power, without causing a second power supply system to supply power, to the electric brake device, by setting a target output voltage of the second power supply system lower than an output voltage of the first power supply system when the failure detection unit does not detect the failure, and operates the electric brake device by setting the target output voltage to a voltage within a range in which the electric brake device is operable when the failure detection unit detects the failure. 1. A controller provided in a vehicle including an electric brake device , a first power supply system and a second power supply system configured to supply power to the electric brake device , and a relay provided between the electric brake device and the second power supply system , the controller comprising:a failure detection unit configured to detect a failure in the first power supply system; anda power supply system control unit configured to control power supply to the electric brake device based on a detection result of the failure detection unit,wherein the power supply system control unit is configured to:close the relay in a case where an execution of an automatic parking function of the vehicle starts;cause, during the execution of the automatic parking function, the first power supply system to supply power to the electric brake device without causing the second power supply system to supply power to the electric brake device, by setting a target output voltage of the second power supply system to a first voltage when the failure detection unit does not detect the failure in the first power supply system, the first voltage being lower than an output ...

Unattended Railcar Motion Control System

A method and mechanism for initiating an emergency stop for an unattended railcar is disclosed. The method may include using a trip arm placed alongside the railway tracks at a designated stop point that may contact a portable trip-cock lever arm that extends out beyond the perimeter of the railcar if the railcar reaches the stop point as it moves along the track. The trip-cock lever arm may be attached to a valve that is connected to the pneumatic brake system of the unattended railcar. As the trip-cock lever arm rotates, the valve may open to release the air pressure in the pneumatic brake system causing the brakes to engage the wheels causing the railcar to stop.

Determining integrity of braking control system

A method of determining the integrity of an electric or hydraulic braking control system. A reduction rate of a voltage or hydraulic pressure in the braking control system is determined, and the integrity of the braking control system is determined by comparing the reduction rate with a threshold. The braking control system may be an aircraft braking control system, and the method may be performed during flight of the aircraft—typically during cruise.

Brake Apparatus

An object of the present invention is to provide a brake apparatus capable of acquiring a sufficient braking force when an abnormality has occurred. The brake apparatus includes a stroke simulator. The stroke simulator is connected to a portion of an oil passage between a master cylinder and a valve. The oil passage connects the master cylinder and a wheel cylinder therebetween. The stroke simulator is configured to generate a brake operation reaction force due to an increase and a reduction in a volume of a positive pressure chamber formed inside the stroke simulator. Brake fluid contained in a first chamber of the master cylinder flows into the positive pressure chamber at the time of control by a by-wire control unit. A fluid amount that can be supplied from the first chamber is larger than a fluid amount that the positive pressure can absorb therein. 117.-. (canceled)18. A brake apparatus comprising:an oil passage connecting a master cylinder and a wheel cylinder therebetween;a valve configured to switch a communication state of the oil passage;a by-wire control unit configured to close the valve to increase a pressure in the wheel cylinder by a hydraulic source provided separately from the master cylinder, according to a state of a brake operation performed by a driver;a pressing force brake unit configured to open the valve to increase the pressure in the wheel cylinder by the master cylinder; anda stroke simulator connected to a portion of the oil passage between the master cylinder and the valve, and configured to generate a brake operation reaction force due to an increase and a reduction in a volume of a positive pressure chamber formed inside the stroke simulator,wherein brake fluid contained in a first chamber of the master cylinder flows into the positive pressure chamber at the time of control by the by-wire control unit, andwherein a fluid amount that can be supplied from the first chamber is larger than a fluid amount that a positive pressure chamber ...

ELECTROMECHANICAL BRAKE SYSTEM

A brake system includes an electromechanical brake having a friction surface, a lining support having a brake lining, an electric motor for moving the lining support, and a control and monitoring unit. The control and monitoring unit ascertains, from a first value ascertained during a first movement of the lining support by the electric motor, an operating parameter of at least one part of the brake, and a second value ascertained during a second movement opposite to the first movement of the lining support, by the electric motor, an operating behavior value for a real operating behavior of the relevant brake, and ascertains, by comparing the at least one real operating behavior value to at least one stored operating behavior expectation, a correction factor. The brake control system is corrected by the one correction factor and a regulator of the electric motor is activated using the corrected brake control signal. 123-. (canceled)24. An electromechanical brake system comprising at least one electromechanical brake , wherein the electromechanical brake comprises:at least one friction surface;at least one lining support having at least one brake lining;at least one electric motor for the predefinable movement of the lining support; andan actuating mechanism, on which the lining support is mounted, and which is connected to the electric motor;wherein the brake system has a control and monitoring unit adapted to receive a braking action request on the input side and to generate a brake control signal on a basis of the braking action request and output it to a regulator of the electric motor, 'to ascertain, from at least one first value, which is ascertained during a first movement of the lining support by means of the electric motor, of at least one first operating parameter of at least one part of the brake, and at least one second value, which is ascertained during a second movement, opposite to the first movement, of the lining support by means of the electric ...

DEVICE FOR DETECTING WHEEL SPEED

A wheel speed detection device according to one aspect of the present disclosure is installable on a wheel bearing which comprises an outer ring and an inner ring coupled to a rotating shaft and relatively rotated relative to the outer ring about the rotating shaft. The wheel speed detection device comprises a first target concentrically coupled to the rotating shaft, a second target disposed along an outer circumference of the inner ring, a cap coupled to the outer ring to cover the first target and the second target, a first sensor disposed in the cap and configured to detect a variation in magnetic field of the first target due to a rotation of the rotating shaft, and a second sensor disposed in the cap and configured to detect a variation in magnetic pole of the second target due to a rotation of the inner ring. 1. A wheel speed detection device installable on a wheel bearing which comprises an outer ring and an inner ring coupled to a rotating shaft and relatively rotated relative to the outer ring about the rotating shaft , the wheel speed detection device comprising:a first target concentrically coupled to the rotating shaft;a second target disposed along an outer circumference of the inner ring;a cap coupled to the outer ring to cover the first target and the second target;a first sensor configured to detect a variation in magnetic field of the first target due to a rotation of the rotating shaft and disposed in the cap; anda second sensor configured to detect a variation in magnetic pole of the second target due to a rotation of the inner ring and disposed in the cap.2. The wheel speed detection device of claim 1 , wherein the first sensor generates information on a rotation angle of the rotating shaft on the basis of the variation in magnetic field of the first target.3. The wheel speed detection device of claim 1 , wherein the first sensor comprises a detector which is concentrically disposed with respect to the rotating shaft.4. The wheel speed detection ...

ELECTRONIC ANOMALY DETECTION UNIT FOR USE IN A VEHICLE, AND METHOD FOR DETECTING AN ANOMALY IN A COMPONENT OF A VEHICLE

An electronic anomaly detection unit for use in a vehicle includes an input component for capturing an input variable, wherein the input variable contains state information for at least one component of the vehicle, a memory component for storing state values based on the input variable, a selection component for selecting selected state values from the stored state values, an association component for associating the selected state values with predefined values, wherein the predefined values define a normal state of the component of the vehicle, and a decision component for deciding whether there is an anomalous behavior in the at least one component of the vehicle, based on the association, wherein one or more of the input component, the memory component, the selection component, the association component and the decision component are implemented in hardware. 1. An electronic anomaly detection unit for use in a vehicle , the anomaly detection unit comprising:an input component configured to capture an input variable, wherein the input variable contains state information for at least one component of the vehicle;a memory component configured to store state values based on the input variable;a selection component configured to select selected state values from the stored state values;an association component configured to associate the selected state values with predefined values to form an association, wherein the predefined values define a normal state of the component of the vehicle; anda decision component configured to determine whether there is an anomalous behavior in the at least one component of the vehicle, based on the association,wherein one or more of the input component, the memory component, the selection component, the association component, and the decision component are implemented in hardware.2. The electronic anomaly detection unit as claimed in claim 1 , wherein the state information comprises a network activity claim 1 , at least one state ...

ANTISKID OPERATION DURING DEGRADED OPERATION

A braking system may include a controller, a first wheel and a second wheel. The first wheel may be laterally displaced from the second wheel by a first distance. A first wheel speed sensor may be coupled to the first wheel and a second wheel sensor may be coupled to the second wheel. The controller may be configured to determine at least one of a slip ratio, a coefficient of friction, or a braking pressure of the second wheel in response to failure of the first wheel speed sensor. The controller may be configured to calculate a consistency value of the at least one of the slip ratio, the coefficient of friction, or the braking pressure. The controller may be configured to adjust a braking pressure of the first wheel speed sensor based upon the consistency value and the first distance. 1. A braking system comprising:a controller;a first wheel and a second wheel, the first wheel displaced from the second wheel in at least one of a forward direction or an aft direction by a second distance;a first wheel speed sensor coupled to the first wheel and a second wheel sensor coupled to the second wheel;wherein the controller is configured to determine at least one of a slip ratio, a coefficient of friction, or a braking pressure of the second wheel in response to failure of the first wheel speed sensor;wherein the controller is configured to calculate a consistency value of the at least one of the slip ratio, the coefficient of friction, or the braking pressure;wherein the controller is configured to adjust a braking pressure applied to the first wheel based upon the consistency value and the second distance.2. The braking system of claim 1 , wherein the controller is configured to adjust the braking pressure applied to the first wheel as a proportion of the braking pressure applied to the second wheel.3. The braking system of claim 1 , wherein the first wheel is disposed on a different landing gear than the second wheel.4. The braking system of claim 1 , wherein the ...

Method for operating a hydraulic system and brake system

A method for operating a hydraulic system with a plurality of consumers an electrically controllable pressure supply device and an electrically actuable inlet valve, per consumer, which inlet valve is arranged between the pressure supply device and the consumer, wherein a pressure/volume relationship is predefined or determined for each consumer, wherein each consumer is assigned to a first group or a second group of consumers, wherein the first group of consumers includes at least one consumer, and wherein, in order to set predefined consumer-specific setpoint pressures, the first group of consumers is connected via the respectively opened inlet valve to the pressure supply device, and the inlet valves of the consumers of the second group are closed, wherein the inlet valve of a single, selected consumer of the second group is opened while being regulated to build up a pressure, and a brake system for motor vehicles.

Apparatus and Method for Isolating an Intact Portion of a Service Braking Circuit from a Failed Service Brake Wheel End

An apparatus and method for protecting an intact portion of a service brake system from a failed wheel end of a vehicle is provided. A failure in a wheel end is detected by determining an operation state of each of the wheel ends by monitoring parameters including the pressure in a parking brake air supply line. When it is determined that a failed wheel end is present in the service brake system, an antilock braking modulator or a service brake isolation valve is switched to a state in which the failed wheel end is isolated from the rest of the brake system. The service brake of the failed wheel end is disabled, while the service brakes of the other wheel ends are enabled for normal operation including antilock braking. And the parking brake of the failed wheel end is enabled, while the parking brakes of the other wheel ends are disabled to prevent immobilization of the vehicle.

Method for the automatic guidance, in particular parking of a motor vehicle and a driver assistance device

In a method for the automatic guidance, e.g., parking, of a motor vehicle, which has a driving device for driving the motor vehicle, braking equipment for braking the motor vehicle, as well as a transmission device, in a normal operation, the braking equipment carrying out automatic braking during the automatic guidance, it is provided that, when a fault of the braking equipment occurs during the automatic guidance, an emergency operation is carried out, in which the motor vehicle is braked automatically to a standstill only by using the driving device and/or the transmission device.

BRAKE SYSTEM HAVING TWO PRESSURE-PROVIDING DEVICES AND METHOD FOR OPERATING A BRAKE SYSTEM

A brake installation for a motor vehicle. First and second pressure provision devices build up brake pressure in the wheel brakes. The first pressure device connected to a first wheel brake of a first brake circuit and to a second wheel brake of the first brake circuit. The second pressure device connected to a third wheel brake of a second brake circuit and to a fourth wheel brake of the second brake circuit. Each pressure device is respectively activated by an open-loop/closed-loop control unit. A first hydraulic line, with a normally open isolating valve, connects the first wheel brake line of the first brake circuit to the first wheel brake line of the second brake circuit. A second hydraulic line, with a normally open isolating valve, connects the second wheel brake line of the first brake circuit to the second wheel brake line of the second brake circuit. 1. A brake installation for a motor vehicle , having four hydraulic wheel brakes which are assigned in each case to one vehicle wheel , comprising:a brake pedal, which is assigned a travel sensor arrangement for identifying a braking demand, and having a first and a second pressure provision device for building up brake pressure in the wheel brakes,wherein the first pressure provision device is hydraulically connected via a wheel brake line to a first wheel brake assigned to a first brake circuit and is hydraulically connected via a wheel brake line to a second wheel brake assigned to the first brake circuit, and wherein the second pressure provision device is hydraulically connected via a wheel brake line to a third wheel brake assigned to a second brake circuit and is hydraulically connected via a wheel brake line to a fourth wheel brake assigned to the second brake circuit, wherein each pressure provision device is respectively activated by an open-loop and closed-loop control unit,a first hydraulic connecting line, into which an isolating valve which is open when electrically deenergized is connected, ...

METHOD FOR MONITORING AN ELECTRIC MOTOR, ELECTRONIC CONTROL MODULE, HYDRAULIC BRAKE SYSTEM AND STORAGE MEDIUM

A method for monitoring an electric motor of a hydraulic brake system for a motor vehicle, wherein a first torque and a second torque are calculated and compared with one another. A fault can be detected on the basis of the comparison. The invention also relates to an associated electronic control module, to an associated hydraulic brake system and to an associated non-volatile computer-readable storage medium. 1. A method for monitoring an electric motor of a hydraulic brake system for a motor vehicle , wherein the method comprises:calculating a first torque of the motor,calculating a second torque of the motor, anddetecting a malfunction on the basis of a comparison of the first torque and of the second torque.2. The method as claimed in claim 1 ,wherein the first torque is a motor load torque.3. The method as claimed in claim 1 ,wherein the first torque is calculated on the basis of an electrical motor torque, a moment of inertia and a motor angular acceleration.4. The method as claimed in 'the electrical motor torque minus the moment of inertia multiplied by the motor angular acceleration.', 'wherein the first torque is calculated as follows5. The method as claimed in claim 3 ,wherein the motor angular acceleration is extracted by an observer.6. The method as claimed in claim 1 ,wherein the second torque is calculated at least partially on the basis of a measured hydraulic pressure.7. The method as claimed in claim 1 ,wherein the second torque is calculated at least partially on the basis of a measured hydraulic pressure, a transmission ratio, an area of a linear actuator piston which is driven by the motor and an efficiency constant.8. The method as claimed in claim 7 , 'the product of the efficiency constant, the area of a linear actuator piston which is driven by the motor, the transmission ratio and the measured hydraulic pressure, divided by 2 and by n.', 'wherein the second torque is calculated as follows9. The method as claimed in claim 1 , calculating a ...

Motor control system provided with function to detect abnormal braking

A motor control system of the present invention includes a servo electricity supply unit supplying electricity to a servo motor, and a controller controlling the servo motor, a mechanical brake and the servo electricity supply unit. The controller controls the servo electricity supply unit to stop the supply of electricity to the servo motor when a signal receiving unit receives a signal for actuating the mechanical brake and to resume the supply of electricity to the servo motor when an abnormality determining unit determines that abnormality exists in the mechanical brake.

Control Architecture for Electrified Braking and Electrified Steering of a Vehicle

A control architecture for electrified braking and electrified steering of a vehicle supplies a steering actuator and a steering controller with power from a first one of at least two energy supply units. Two brake actuators are supplied with power from a second one of the at least two energy supply units. A first brake actuator is associated with a first wheel of the vehicle and a second brake actuator is associated with a second wheel of the vehicle. The first brake actuator and/or the second brake actuator is/are actuated to perform a steering function for the vehicle. 110.-. (canceled)11. A control architecture for electrified braking and electrified steering of a vehicle , the control architecture comprising:at least two energy supply units;a steering actuator;a steering controller; andtwo brake actuator units;wherein the steering actuator and steering controller are configured to be supplied with power from a first one of the at least two energy supply units,wherein the two brake actuators are configured to be supplied with power from a second one of the at least two energy supply units,wherein a first brake actuator is associated with a first wheel of the vehicle and a second brake actuator is associated with a second wheel of the vehicle, andwherein actuation of the first brake actuator and/or the second brake actuator is configured to perform a steering function for the vehicle.12. The control architecture according to claim 11 , whereinthe first brake actuator and second brake actuator are associated with the two wheels of a same axle of the vehicle.13. The control architecture according to claim 11 , whereinthe first brake actuator and/or second brake actuator are configured to perform the steering function for the vehicle upon detection of a failure or malfunction in one of more of:the first one of the energy supply units,the steering actuator, orthe steering controller.1411. The control architecture according to claim 11 , further comprising:at least ...

METHOD AND APPARATUS FOR CONTROLLING ELECTRO-HYDRAULIC BRAKE

A method of controlling an electro-hydraulic brake system comprising a main brake unit and redundancy brake unit, the method comprising: determining a failure type of the main brake unit, the failure type being one of a plurality of failure types comprising: a sensor failure type comprising a failure occurred at a first sensor connected to the main brake unit; an independent wheel control failure type comprising a failure at the main brake unit to perform an independent wheel control; a hydraulic pressure generation failure type comprising a failure at the main brake unit to form a hydraulic pressure; and an inoperable failure type comprising the main brake being not controllable; and in response to determining that the failure type of the main brake unit is the sensor failure type or the independent wheel control failure type, causing the main brake unit to generate a braking force, in response to determining that the failure type of the main brake unit is the hydraulic pressure generation failure type or the inoperable type, causing the redundancy brake unit to generate a braking force. 1. A method of controlling an electro-hydraulic brake system comprising a main brake unit and redundancy brake unit , the method comprising: a sensor failure type comprising a failure occurred at a first sensor connected to the main brake unit;', 'an independent wheel control failure type comprising a failure at the main brake unit to perform an independent wheel control;', 'a hydraulic pressure generation failure type comprising a failure at the main brake unit to form a hydraulic pressure; and', 'an inoperable failure type comprising the main brake being not controllable; and, 'determining a failure type of the main brake unit, the failure type being one of a plurality of failure types comprisingin response to determining that the failure type of the main brake unit is the sensor failure type or the independent wheel control failure type, causing the main brake unit to generate a ...

Technique for Redundant Registration of an Actuation of a Motor-Vehicle Braking System

A technique is described for the redundant registering of an actuation of a motor-vehicle brake system. A device which is provided for this purpose comprises a first sensor for generating a first sensor signal which indicates a movement of a mechanical input component of the brake system, and a second sensor for generating a second sensor signal which indicates a hydraulic pressure in the brake system. A processing device which is coupled to the two sensors is configured for selectively outputting an actuation signal which is generated on the basis of the first sensor signal or an actuation signal which is generated on the basis of the second sensor signal. The actuation signal indicates an actuation of the brake system. 1. An apparatus for registering of an actuation of a motor-vehicle braking system , comprising:a first sensor generating a first sensor signal, the first sensor signal indicating a movement of a mechanical input component of the braking system;a second sensor generating a second sensor signal, the second sensor signal indicating a hydraulic pressure in the braking system;a central evaluating unit coupled with the first sensor and the second sensor, the central evaluating unit configured to execute a program that generates a first actuation signal indicating an actuation of the braking system generated on the basis of the first sensor signal and the second sensor signal, wherein the program executed by the central evaluating unit further uses the second sensor signal for the purpose of checking a plausibility of the first sensor signal;a watchdog checking unit coupled with the central evaluating unit to check an operational capability of the central evaluating unit to execute the program;an auxiliary evaluating circuit separate from the central evaluating unit which receives the second sensor signal and is configured to output a second actuation signal on the basis of the second sensor signal; anda multiplexer receiving the first actuation signal and ...

METHOD AND APPARATUS FOR OPERATING A VEHICLE

An apparatus for operating a vehicle, including a coupling device which is designed to decouple a speed sensor from a primary energy supply of a primary control of a primary brake-control system and to couple it to a secondary energy supply, and a control device which is designed to control the coupling device as a function of an error signal of the primary control, so that in response to an error of the primary control, the speed sensor is able to be decoupled from the primary energy supply and coupled to the secondary energy supply. A method for operating a vehicle, a system for operating a vehicle, as well as a computer program are also described. 110-. (canceled)11. An apparatus for operating a vehicle , comprising:a coupling device designed to decouple a speed sensor from a primary energy supply of a primary control of a primary brake-control system, and to couple the speed sensor to a secondary energy supply; anda control device designed to control the coupling device as a function of an error signal of the primary control so that in response to an error of the primary control, the speed sensor is able to be decoupled from the primary energy supply and coupled to the secondary energy supply.12. The apparatus as recited in claim 11 , further comprising:an amplifier device is provided to amplify a speed-sensor signal and to transmit the amplified speed-sensor signal to a secondary control of a secondary brake system, the coupling device being designed to, responsive to the control by the control device, couple the amplifier device to the secondary energy supply.13. The apparatus as recited in claim 12 , wherein the amplifier device is designed to transmit the amplified speed-sensor signal to the secondary control claim 12 , independently of the error signal.14. The apparatus as recited in claim 12 , further comprising:a secondary control designed to monitor the amplified speed-sensor signal by comparing the amplified speed-sensor signal to a vehicle speed signal ...

APPARATUS AND METHOD FOR DETERMINING A ROTATIONAL SPEED OF AT LEAST ONE WHEEL OF A VEHICLE

An apparatus for determining a rotational speed of at least one wheel of a vehicle, including: a detection device for detecting an angular velocity of the wheel that is correlated to the rotational speed, wherein the detection device is configured to provide an electrical detection signal depending on the angular velocity detected; a first control unit with a first measurement device for measuring the detection signal, wherein the first control unit is electrically joined to the detection device; and a second control unit with a second measurement device for measuring the detection signal, wherein the second control unit is electrically joined to the detection device, wherein the detection device can be electrically switched or is electrically switched between the first measurement device and the second measurement device. Also described is a related method.

PEDALLESS ELECTRONICALLY CONTROLLED HYDRAULIC BRAKING SYSTEM WITH REDUNDANT PUMP

A braking system for an autonomous vehicle includes a brake device that is configured to brake a vehicle wheel. A first control system includes a first pump fluidly connected to the brake device via a hydraulic circuit. A second control system includes a second pump fluidly connected to the brake device via the hydraulic circuit. The second pump is fluidly connected in parallel with the first pump. A controller is in communication with the first and second control systems. The controller is configured to detect a fault in the first control system. The controller is configured to command the second pump to pressurize the hydraulic circuit in response to the failure. 1. A method of controlling a brake system comprising the steps of:operating a brake circuit with a first control system to pressurize a brake circuit;detecting a fault with the operating step relating to an undesired pressure in the brake circuit; andactivating a second control system to pressurize the brake circuit in response to the detected fault.2. The method according to claim 1 , wherein the undesired pressure is a low pressure.3. The method according to claim 1 , wherein the operating step includes driving a pump with a motor to pressurize the brake circuit claim 1 , and the fault relates to at least one of the pump and the motor.4. The method according to claim 3 , wherein the activating step includes activating a second pump in the second control system.5. The method according to claim 1 , wherein the operating step includes commanding a pump with an electronic control unit claim 1 , and the fault relates to the electronic control unit.6. The method according to claim 5 , wherein the activating step includes activating a second electronic control unit.7. The method according to claim 1 , wherein the activating step includes operating the second control system in combination with operational components of the first control system.8. The method according to claim 7 , wherein the detecting step ...

METHOD FOR CONTROLLING ESC INTEGRATED BRAKING SYSTEM

Disclosed is a method of controlling an electronic stability control (ESC) integrated braking system, which includes, when a failure in which pressure is unable to be formed in a master cylinder unit is detected during braking of a vehicle by the ESC integrated braking system, maintaining, by a controller, a braking force applied during the braking by closing designated oil pressure relief valves for coupling the master cylinder unit and a flow channel of a circuit, and when pressure (PC) of a pedal cylinder becomes equal to or greater than pressure (MC) of the circuit based on the maintained braking force, by a brake pedal stepped on by a driver, controlling, by the controller, the designated oil pressure relief valves to be in an open state and then switching the state of the designated oil pressure relief valves to a mechanical backup state. 1. A method of controlling an electronic stability control (ESC) integrated braking system , the method comprising:when a failure in which pressure is unable to be formed in a master cylinder unit is detected during braking of a vehicle by the ESC integrated braking system, maintaining, by a controller, a braking force applied during the braking by closing designated oil pressure relief valves for coupling the master cylinder unit and a flow channel of a circuit; and{'b': 1', '1, 'when pressure (PC) of a pedal cylinder unit becomes equal to or greater than pressure (MC) of the circuit based on the maintained braking force, by a brake pedal stepped on by a driver, controlling, by the controller, the designated oil pressure relief valves to be in an open state and then switching the state of the designated oil pressure relief valves to a mechanical backup state.'}2. The method of claim 1 , wherein the circuit is a flow channel comprising inlets valve and outlet valves for forming braking pressure in respective wheel cylinders of front wheels and rear wheels via the designated oil pressure relief valves.3. The method of claim 1 ...

COMMUNICATION METHOD BETWEEN A BRAKE BOOSTER OF A VEHICLE AND AN ESP CONTROL UNIT OF THE VEHICLE, AND A BRAKE SYSTEM

A communication method between a brake booster of a vehicle and an ESP control unit of the vehicle. In the method, a signal is coupled into a brake fluid, transported between the brake booster and the brake control unit over a brake line filled with the brake fluid, and extracted again from the brake fluid. 113-. (canceled)14. A communication method between a brake booster of a vehicle and an ESP control unit of the vehicle , the communication method comprising the following steps:coupling a signal into a brake fluid;transporting the signal between the brake booster and the ESP control unit via a brake line filled with the brake fluid; andextracting the signal from the brake fluid.15. The communication method as recited in claim 14 , wherein at the brake booster claim 14 , the signal is coupled into the brake fluid using at least pulse-like activation of the brake booster.16. The communication method as recited in claim 14 , wherein at the ESP control unit claim 14 , the signal is extracted from the brake fluid by a pressure sensor of the ESP control unit.17. The communication method as recited in claim 14 , wherein a predefined sequence of pulses is coupled into the brake fluid as the signal.18. The communication method as recited in claim 14 , wherein by coupling the signal into the brake fluid claim 14 , the signal is transported on the brake line claim 14 , when a failure of a parallel communication path via a communications bus of the vehicle is detected.19. The communication method as recited in claim 18 , wherein after the failure is detected claim 18 , a waiting time is allowed to elapse claim 18 , before the signal is coupled into the brake fluid.20. The communication method as recited in claim 14 , wherein in the ESP control unit claim 14 , at least one valve is closed when the signal is transported.21. The communication method as recited in claim 14 , wherein at the brake booster claim 14 , the signal is coupled into the brake fluid claim 14 , using a ...

BRAKING SYSTEM VALVE ASSEMBLY AND BRAKE CALIPER BODY WITH SAID ASSEMBLY

A valve assembly for a braking system having a master cylinder side opening, at least one caliper side opening, and at least one valve pipe, connecting the master cylinder side opening and the caliper side opening. A shutter element has a shutter body movable with respect to the valve body. When the shutter body is in a valve closing position, it interrupts a at least one main fluid passage and defines a master cylinder side pipe stretch facing a master cylinder side opening and a caliper side pipe stretch facing a caliper side opening in the valve pipe. The shutter body at least partially delimits at least one secondary fluid passage, so that, when the shutter body is in a valve closing position, the master cylinder side pipe stretch is in fluid communication with the caliper side pipe stretch only through the secondary fluid passage. 114-. (canceled)161721212725. The valve assembly () according to claim 15 , wherein said shutter body () and said valve body () jointly delimit said secondary fluid passage (); and/or wherein said secondary fluid passage () is delimited by at least one groove made on said shutter body () and by the walls of said valve body () facing said valve pipe ().171129129. The valve assembly () according to claim 15 , wherein said secondary fluid passage () is a portion of said main fluid passage (); and/or wherein said secondary fluid passage () is a subset of said main fluid passage ().1811229103011122913733015713. The valve assembly () according to claim 15 , wherein said at least one secondary fluid passage () comprises a first secondary passage mouth () claim 15 , which leads into said master cylinder side pipe stretch () claim 15 , and an opposite second secondary passage mouth () claim 15 , which leads into said caliper side pipe stretch (); and/or wherein said secondary fluid passage () has a first secondary passage mouth () which leads onto a master cylinder side surface () of the shutter body () claim 15 , facing said master cylinder ...

METHOD FOR DETECTING A LEAKAGE DURING OPERATION OF A BRAKING SYSTEM FOR A VEHICLE AND BRAKING SYSTEM FOR A VEHICLE

A method is described for detecting a leakage during the operation of a braking system. A braking intention signal characterizing a braking intention is generated by actuating a final control system of an actuating circuit; a setpoint braking pressure required in an active circuit is ascertained based on the braking intention signal; an actual braking pressure in the active circuit is set according to the setpoint braking pressure with the aid of a pressure generation unit by moving a displacement piston to actuate a wheel brake coupled to the active circuit; and a pressure modulation is carried out. The pressure modulation includes setting the actual braking pressure in the active circuit to a value greater than the setpoint braking pressure, and lowering the actual braking pressure until the setpoint braking pressure is reached by moving the displacement piston at a predetermined piston speed. Furthermore, a chronological pressure gradient is ascertained, as the actual braking pressure is being lowered, during the pressure modulation, and a leakage of the active circuit is detected based on the ascertained pressure gradient when the pressure gradient is outside a range predetermined for the piston speed. 1. A method for detecting a leakage during an operation of a braking system for a vehicle , comprising:generating a braking intention signal representing a braking intention by actuating a final control system of an actuating circuit;ascertaining a setpoint braking pressure required in an active circuit based on the braking intention signal;setting an actual braking pressure in the active circuit according to the setpoint braking pressure with the aid of a pressure generation unit by moving a displacement piston of the pressure generation unit to actuate a wheel brake coupled to the active circuit;carrying out a pressure modulation, including setting the actual braking pressure in the active circuit, to a value greater than the setpoint braking pressure, and ...

Technique for Redundant Registration of an Actuation of a Motor-Vehicle Braking System

A technique is described for the redundant registering of an actuation of a motor-vehicle brake system. A device which is provided for this purpose comprises a first sensor for generating a first sensor signal which indicates a movement of a mechanical input component of the brake system, and a second sensor for generating a second sensor signal which indicates a hydraulic pressure in the brake system. A processing device which is coupled to the two sensors is configured for selectively outputting an actuation signal which is generated on the basis of the first sensor signal or an actuation signal which is generated on the basis of the second sensor signal. The actuation signal indicates an actuation of the brake system.

Sensor Assembly for a Vehicle

A sensor assembly includes a sensor element and at least two control units, each having an evaluation and control unit and an energy source. In a first control unit, a first evaluation and control unit is connected to a first energy source, and in a second control unit, a second evaluation and control unit is connected to a second energy source. The at least two control units and the sensor element are interconnected by at least one separate interconnection unit. Each interconnection unit connects a first connection of an associated sensor element to the first energy source and/or to the second energy source. A second connection of the sensor element is earthed. A sensor current flowing through the sensor element is modulated at least with information about a detected measured variable. The first evaluation and control unit and/or the second evaluation and control unit evaluate(s) the detected sensor current. 1. A sensor arrangement comprising:a sensor element;at least a first control device and a second control device each having an evaluation and control unit and an energy source, wherein a first evaluation and control unit of the first control device is connected to a first energy source in the first control device, and a second evaluation and control unit of the second control device is connected to a second energy source in the second control device; andat least one separate connection module configured to connect the first and the second control devices and the sensor element to one another,wherein a respective connection module of the at least one separate connection module connects a first connection of the sensor element to the first energy source and/or to the second energy source,wherein a second connection of the sensor element is connected to ground,wherein the sensor element is configured to modulate a sensor current flowing through the sensor element with information relating to a captured measurement variable as a captured sensor current, andwherein ...

SYSTEMS AND METHODS FOR REDUNDANT WHEEL SPEED SENSING

A braking system and method with redundant wheel speed sensing. In one example, the braking system includes a first electronic control unit connected to a first power supply and a second electronic control unit connected to a second power supply. The second electronic control unit is communicatively coupled to the first electronic control unit. The braking system also includes a first wheel speed sensor, a second wheel speed sensor, a third wheel speed sensor, and a fourth wheel speed sensor. The first wheel speed sensor and the second wheel speed sensor are directly coupled to and powered by the first electronic control unit and are communicatively coupled to the second electronic control unit. The third wheel speed sensor and the fourth wheel speed sensor are directly coupled to and powered by the second electronic control unit and are communicatively coupled to the first electronic control unit. The first electronic control unit and the second electronic control unit each configured to calculate a wheel speed from the first wheel speed sensor, the second wheel speed sensor, the third wheel speed sensor, and the fourth wheel speed sensor. 1. A braking system of a vehicle comprising:a first electronic control unit connected to a first power supply;a second electronic control unit connected to a second power supply, the second electronic control unit communicatively coupled to the first electronic control unit;a first wheel speed sensor;a second wheel speed sensor;a third wheel speed sensor; anda fourth wheel speed sensor;wherein the first wheel speed sensor and the second wheel speed sensor are directly coupled to and powered by the first electronic control unit and are communicatively coupled to the second electronic control unit;the third wheel speed sensor and the fourth wheel speed sensor are directly coupled to and powered by the second electronic control unit and are communicatively coupled to the first electronic control unit; andthe first electronic control ...

Brake Apparatus and Brake Control Method

Provided is a brake apparatus and a brake control method capable of improving accuracy of control of a wheel cylinder hydraulic pressure. The brake apparatus includes a first brake circuit connecting a master cylinder configured to generate a brake hydraulic pressure according to a pedal operation and a plurality of wheel cylinders configured to generate a braking force on each of wheels of a vehicle by application of the brake hydraulic pressure to each other, a pump configured to increase a pressure of brake fluid in the master cylinder and transmit the brake fluid having the increased pressure to the plurality of wheel cylinders via a second brake circuit connected to the first brake circuit, a plurality of pressure increase control valves provided in the first brake circuit, and a first target upstream hydraulic pressure calculation portion configured to calculate a target hydraulic pressure in the second brake circuit in such a manner that the target hydraulic pressure exceeds a maximum value of target wheel cylinder hydraulic pressures of respective wheel cylinders corresponding to the individual wheels by an amount of a change in the hydraulic pressure in the second brake circuit when a pressure increase control valve corresponding to a wheel other than a maximum hydraulic pressure wheel, of the plurality of pressure increase control valves, is opened. 1. A brake apparatus comprising:a first brake circuit connecting a master cylinder configured to generate a brake hydraulic pressure according to a pedal operation and a plurality of wheel cylinders configured to generate a braking force on each of wheels of a vehicle by application of the brake hydraulic pressure to each other;a pump configured to increase a pressure of brake fluid in the master cylinder, and transmit the brake fluid having the increased pressure to the plurality of wheel cylinders via a second brake circuit connected to the first brake circuit;a plurality of pressure increase control valves ...

DUAL SPEED AND POSITION WHEEL TRANSDUCER

A wheel speed measuring device for an aircraft braking system uses dual technology packaged in a single transducer that incorporates the robust and reliable variable reluctance technology along with a secondary package for measuring position and velocity bi-directionally for low speed and taxi operations. The transducer of the present invention is preferably incorporated into the envelope of the axle to allow both retrofit on existing aircraft and to maintain existing axle design and configuration. 1. A wheel speed transducer for an aircraft braking system , comprising:a housing defining a hollow central interior;a shaft extending longitudinally within said housing and mounted for rotation therein;a first wheel speed measuring device comprising a variable reluctance wheel speed device coupled to said shaft within said housing; anda second wheel speed measuring device within said housing and coupled to said shaft, said second wheel speed measuring device configured for distinguishing between a forward wheel speed and a reverse wheel speed.2. The wheel speed transducer of claim 1 , wherein the second wheel speed measuring device measures rotational position of the wheel in forward and reverse directions.3. The wheel speed transducer of claim 1 , wherein the second wheel speed measuring device is a magnetic encoder including a magnetic encoder wheel rotating in proximity to a magnetic sensor.4. The wheel speed transducer of claim 1 , wherein the second wheel speed measuring device is an inductive device including a plurality of inductive probes and a toothed claim 1 , target wheel.5. The wheel speed transducer of claim 1 , wherein the second wheel speed measuring device includes Hall Effect probes and a magnetized target wheel.6. The wheel speed transducer of claim 1 , wherein the second wheel speed measuring device includes capacitive probes.7. The wheel speed transducer of claim 1 , wherein the second wheel speed measuring device includes an angular resolver.8. The ...

MONITORING OF INACTIVE SOLENOID VALVES

A method for monitoring a solenoid valve, the method including: applying a test signal on one side of the solenoid valve, the solenoid valve having a control coil for controlling an air pressure in a brake cylinder of an electro-pneumatic brake, wherein the solenoid valve has a supply voltage side, at which the control coil takes up an electric supply current, and a reference potential side, at which the control coil delivers the electric supply current; tapping a measurement signal on the other side of the solenoid valve; and determining the state of the solenoid valve based on a juxtaposition of the test signal and of the measurement signal. Also described are a related control apparatus, an electro-pneumatic brake, and a computer readable medium. 113-. (canceled)14. A method for monitoring a solenoid valve , the method comprising:applying a test signal on one side of the solenoid valve, the solenoid valve having a control coil for controlling an air pressure in a brake cylinder of an electro-pneumatic brake, wherein the solenoid valve has a supply voltage side, at which the control coil takes up an electric supply current, and a reference potential side, at which the control coil delivers the electric supply current;tapping a measurement signal on the other side of the solenoid valve; anddetermining the state of the solenoid valve based on a juxtaposition of the test signal and of the measurement signal.15. The method of claim 14 , wherein the test signal is dependent on the control of the air pressure in the brake cylinder.16. The method of claim 14 , wherein the test signal has a predetermined claim 14 , temporally changing profile.17. The method of claim 16 , wherein the temporal profile is formed from a plurality of pulses.18. The method of claim 17 , further comprising:counting pulses in the measurement signal over a predetermined period, wherein a juxtaposition includes a comparison of the counted pulses in the measurement signal with a count value, which ...

BRAKE SYSTEM

Provided is a brake system including a main automatic driving ECU, a main actuator, a sub automatic driving ECU, and a sub actuator. The main actuator is configured to receive a braking request from the main automatic driving ECU or a braking request made through an operation of a brake pedal, and to apply a braking force to a vehicle. The sub actuator is configured to receive a braking request from the sub automatic driving ECU, and to apply a braking force to the vehicle. When the main automatic driving ECU has failed, the sub automatic driving ECU is configured to acquire the braking request from the main actuator through the sub actuator, and to cause the main actuator to apply the braking force. 1. A brake system , comprising:a first vehicle control device;a first actuator configured to receive a braking request from the first vehicle control device or a braking request made through an operation of a brake pedal, and to apply a braking force to a vehicle;a second vehicle control device;a second actuator configured to receive a braking request from the second vehicle control device, and to apply a braking force to the vehicle; andan arbitration unit configured to generate a final braking request when the braking request is made through the operation of the brake pedal under a state in which the braking request from the second vehicle control device exists,wherein, when the braking request is made through the operation of the brake pedal under a state in which the first vehicle control device has failed and the braking request from the second vehicle control device exists, the arbitration unit is configured to cause at least one of the first actuator and the second actuator to apply the braking force to the vehicle based on the final braking request generated by acquiring, from the first actuator, the braking request made through the operation of the brake pedal.2. The brake system according to claim 1 , wherein the arbitration unit is configured to cause the ...

ELECTRIC BRAKE SYSTEM

An electric brake system includes a plurality of electric brake devices. A control device of each electric brake device includes: an abnormality determination section that determines whether there is abnormality in supply of power from a power supply device to the electric brake device; and a redundant function control section that, when the abnormality determination section has determined that there is abnormality in supply of power, controls the braking force by using an auxiliary power supply in accordance with a predetermined condition. The redundant function control section controls the braking force by using the auxiliary power supply at least when a desired braking force cannot be output even with all the electric brake devices for which the abnormality determination section has determined that there is no abnormality in supply of power, as the predetermined condition. 1. An electric brake system comprising a plurality of electric brake devices , the electric brake devices each including a brake rotor , a friction member that is to be brought into contact with the brake rotor , a friction member operator configured to bring the friction member into contact with the brake rotor , an electric motor that drives the friction member operator , and a control device that controls a braking force by controlling the electric motor , whereina main power supply device that supplies power to the respective electric motors and the respective control devices included in the electric brake devices is provided, and each of the electric brake devices is provided with an auxiliary power supply that stores therein power supplied from the main power supply device and supplementarily supplies power to at least the electric motor of the electric brake device,each of the control devices of the electric brake devices includes:an abnormality determination section that determines whether there is abnormality in supply of power from the power supply device to the electric brake device; ...

SYSTEM AND METHOD FOR DIAGNOSING FAILURES IN BRAKE SYSTEMS AND DISCRETE VEHICLE INPUTS

A device includes at least one of a brake position sensor operationally coupled to a brake and providing a brake position signal, or a clutch position sensor operationally coupled to a clutch and providing a clutch position signal. The device further includes a controller having a communication module structured to interpret the at least one of the brake position signal or the clutch position signal, and a collection module structured to collect vehicle dynamics information. The controller further includes a vehicle dynamics module structured to interpret the vehicle dynamics information, and a sensor diagnostics module structured to determine a failure of at least one of the clutch position sensor or the brake position sensor in response to the vehicle dynamics information and at least one of the clutch signal or the brake signal. 1. A device comprising:a brake position sensor operationally coupled to a brake and providing a brake position signal, and a communication module structured to interpret the brake position signal,', 'a collection module structured to collect vehicle dynamics information,', 'a vehicle dynamics module structured to interpret the vehicle dynamics information, and', 'a sensor diagnostics module structured to determine a failure of the brake position sensor in response to the vehicle dynamics information and the brake signal., 'a controller including'}2. The device of claim 1 , wherein:the vehicle dynamics module is further structured to determine the presence of at least one of a vehicle acceleration event and a vehicle deceleration event, andthe sensor diagnostics module is further structured to determine the failure of the brake sensor in response to the at least one of the vehicle acceleration event and the vehicle deceleration event, and to determine a duration of the brake position signal indicating engagement of a service brake.3. The device of claim 1 , wherein:the vehicle dynamics module is further structured to determine the presence ...

DEVICE AND METHOD FOR CALCULATING BRAKE PRESSURE, VEHICLE, COMPUTER PROGRAMME AND CONTROL UNIT

A method and device for a vehicle having wheels which are each assigned a sensor for generating wheel signals. The unit determines whether a wheel is affected by a failure of the corresponding wheel signal. The unit acquires wheel signals which are assigned to the wheels, and for a wheel affected by a wheel signal failure, the corresponding wheel signal is acquired in the form of a substitute signal. The unit calculates a target brake pressure for a wheel at which an increase in brake pressure is necessary. The increase in brake pressure takes place in accordance with the wheel signal which is obtained for the wheel and in accordance with the determination as to whether the wheel is affected by a wheel signal failure. The unit further determines a slip threshold for an anti-lock brake control operation applied to the wheel affected by the wheel signal failure. 1. A method for a vehicle having a plurality of wheels which are each assigned at least one sensor for generating wheel signals comprising:determining whether one of the wheels is affected by a failure of the corresponding wheel signal;receiving wheel signals which are assigned to the wheels, wherein the corresponding wheel signal for a wheel which is affected by a wheel signal failure is received in the form of a substitute signal; andcalculating a target brake pressure for a wheel at which an increase in brake pressure is necessary, in accordance with the wheel signal which is obtained for the wheel and with the determination as to whether the wheel is affected by a wheel signal failure.2. The method as claimed in claim 1 , whereinthe wheel at which the increase in brake pressure is necessary is affected by the wheel signal failure, the target brake pressure is calculated on the basis of the wheel signal which is obtained for the wheel with a lower setting than if the wheel were not affected by the wheel signal failure.3. The method as claimed in further comprising:applying the target brake pressure starting ...

SIGNAL-PROCESSING DEVICE FOR A VEHICLE HAVING AN ABS UNIT, VEHICLE, SIGNAL-PROCESSING METHOD FOR A VEHICLE, COMPUTER PROGRAMME AND CONTROL UNIT

The invention relates to a signal-processing device () for a vehicle having an ABS unit () and multiple wheels, each of which is assigned a sensor (S S S S) for wheel signal generation. The signal-processing device () is designed to detect () a failure of a wheel signal, to form () a substitute signal for the failed wheel signal using the wheel signal of at least one sensor assigned to a wheel that is not affected by the failure, and to supply () the substitute signal to the ABS unit (). The invention also relates to an ABS system () having the signal-processing device () and an ABS unit (), a vehicle having the ABS system (), a signal-processing method for a vehicle having an ABS unit (), a computer programme having computer code for carrying out the signal-processing method, as well as a control unit containing the computer programme. 120-. (canceled)21402404402. A signal-processing device () for a vehicle having an ABS unit () and a plurality of wheels , which are each assigned a sensor (S) for generating wheel signals , wherein the device () is designed:{'b': '602', 'to detect () a failure of a wheel signal;'}{'b': '604', 'to form () a substitute signal for the failed wheel signal using the wheel signal of at least one sensor (S) which is assigned to a wheel which is not affected by the failure; and'}{'b': 606', '404, 'to feed () the substitute signal to the ABS unit ().'}22. The device as claimed in claim 21 , designed to make a selection from wheel signals of those sensors (S) which are assigned to wheels which are not affected by the failure claim 21 , wherein the substitute signal corresponds to the selected wheel signal or is decisively based thereon.23. The device as claimed in claim 22 , designed to carry out the selection in accordance with a detected split μ situation.24. The device as claimed in claim 21 , wherein the failed wheel signal is assigned to a rear wheel (RR claim 21 , RL) claim 21 , and the device is designed to carry out split μ detection ...

Apparatus for providing a sensor signal for evaluation for a braking system of a vehicle, method and control unit for evaluating a sensor signal for a braking system of a vehicle, and braking system for a vehicle

An apparatus for providing a sensor signal (SS) for evaluating a vehicle braking system, including: a first signal-path (SP) for outputting the SS to a first output-interface (OI) to a first converter-device (CD), the first SP having first electronic-components (EC), and is electrically connectable to an input-interface (II) to a vehicle sensor (VS); a first test-device (TD) for applying a first test-signal (TS) to the SS in the first SP, the first TD being electrically connectable to the first SP; a second SP for outputting the SS to a second OI to a second CD, the second SP having second EC, and is electrically connectable to the II to the VS; and a second TD for applying a second TS to the SS in the second SP, the second TD being electrically connectable to the second SP. Also described are a method, control unit, braking system, and computer readable medium.

SUPPLEMENTAL BRAKING CONTROL SYSTEM IN AUTONOMOUS VEHICLES

Described are devices, systems and methods for managing a supplemental brake control system in autonomous vehicles. In some aspects, a supplemental brake management system includes brake control hardware and software that operates with a sensing mechanism for determining the brake operational status and a control mechanism for activating the supplemental brake control in an autonomous vehicle, which can be implemented in addition to the vehicle's primary brake control system. 1. A system for managing braking in an autonomous vehicle , comprising:a vehicle control unit comprising a processor and a memory of the vehicle control unit, wherein the vehicle control unit is configured to provide control signals to (i) subsystems of the autonomous vehicle including a steering subsystem, a throttle subsystem and a primary braking subsystem including primary brakes coupled to at least one wheel of the autonomous vehicle, and (ii) autonomous control modules configured to control autonomous driving functionalities of the autonomous vehicle, wherein the autonomous control modules include a steering control module, a throttle control module and a primary braking control module, and wherein the primary braking control module is in communication with the primary braking subsystem;a supplemental braking subsystem including supplemental brakes at one or more wheels of the autonomous vehicle; anda supplemental braking management unit configured to (i) monitor braking of the primary braking subsystem and (ii) regulate braking of the supplemental braking subsystem.2. The system of claim 1 , wherein the supplemental braking management unit includes a processor and a memory of the supplemental braking management unit.3. The system of claim 1 , wherein the supplemental braking management unit is configured to regulate braking of the supplemental braking subsystem independently from braking of the primary braking subsystem.4. The system of claim 1 , wherein the memory of the vehicle control ...

DRIVER AND DIAGNOSTIC SYSTEM FOR A BRAKE CONTROLLER

A brake control unit includes a processor, a first high side driver and a second high side driver. The processor sends signals to the first high side driver and the second high side driver. The first and second high side drivers process the signals independent of each other. The processor diagnoses faults and locations of faults based on feedback from the high side drivers. The first high side driver controls the braking of a first trailer brake. The second high side driver controls the braking of a second trailer brake. 1. A brake control unit comprising:a processor;a first driver; anda second driver, wherein the processor is coupled to the first driver and the second driver.2. The brake control unit of claim 1 , wherein the first driver comprises a power devices connect in series to the second driver.3. The brake control unit of claim 1 , wherein the processor operatively provides a first signal to the first driver and a second signal to a second driver.4. The brake control unit of claim 1 , further comprising at least one output that operatively transmits a signal to be sent to a towed vehicle brake in response to a brake control signal sent from the processor.5. The brake control unit of claim 1 , wherein the signal sent from the output represents at least one of a first signal provided by the first driver claim 1 , a second signal provided by the second driver claim 1 , or a third signal provided by a combination of the first high side device and the second driver.6. The brake control unit of claim 5 , wherein the processor receives feedback from at least one of the first driver or second high side drive and determines weather a fault exits.7. The brake control unit of claim 6 , wherein the processor determines a location of the fault.8. The brake control unit of claim 6 , wherein the fault comprises a short.9. The brake control unit of claim 1 , wherein the first driver operatively initiates transmission a first brake output signal to a first trailer brake ...

BRAKE APPARATUS

A hydraulic brake system includes a first actuator for a regeneration coordination brake control and a second actuator for maintaining the stability of a vehicle in a hydraulic pressure passage between a master cylinder and a wheel cylinder. The first actuator is controlled by a first ECU, and the second actuator is controlled by a second ECU. When a failure occurs in the first actuator or the first ECU, the second ECU operates the second actuator according to the amount of a brake operation, and assists braking of a wheel. 1. A brake apparatus applied to a vehicle comprising a regenerative braking device to generate regenerative braking force by converting a kinetic energy of a rotating wheel into an electrical energy and collecting the electrical energy to a battery comprises:a master cylinder which outputs a hydraulic pressure of a hydraulic fluid according to a brake operation by a driver,a wheel cylinder which is disposed for each wheel and operates a friction member with the hydraulic pressure of the hydraulic fluid to generate friction braking force,a first hydraulic pressure controller having a first actuator which is disposed in a passage of the hydraulic fluid between said master cylinder and said wheel cylinder and can adjust the hydraulic pressure supplied to said wheel cylinder and a first electrical control unit which controls an operation of said first actuator so that said first actuator outputs a hydraulic pressure which can generate target friction braking force obtained by subtracting a regenerative braking force generated by said regenerative braking device from a target total braking force set up according to the amount of a brake operation,a second hydraulic pressure controller having a second actuator which is disposed in a passage of the hydraulic fluid between said first actuator and said wheel cylinder and can fluctuate the hydraulic pressure of said wheel cylinder and a second electrical control unit which operates said second actuator and ...

Method for suppressing braking noise, central server, vehicle control module, and storage medium

A method for suppressing braking noise in a vehicle by a central server, methods for suppressing braking noise in a vehicle to be carried out in a vehicle, and an associated central server, an associated vehicle control module and an associated data storage medium are disclosed. The data processing is divided between the vehicle and the central server.

APPARATUSES AND METHODS FOR SENDING AND RECEIVING ROTATION SPEED INFORMATION

Apparatuses and methods for sending and receiving rotation speed information and corresponding computer programs and electronically readable data carriers are provided. A current interface is configured to transmit pulse sequences coding a number of bits. In a first bit group of the number of bits, it is flagged whether the pulse sequence has been sent for a zero crossing in a magnetic field. Information modulated onto a second bit group of the number of bits is selected on the basis of the first bit group. 1. An apparatus for sending rotation speed information , comprising:a signal processor configured to receive a magnetic field sensor signal; anda current interface configured to send pulse sequences of a current signal, wherein each pulse sequence comprises a first pulse having a first current level, followed by a number of bit pulses coding a number of bits having a second and a third current level,wherein the signal processor is configured to detect zero crossings in a characteristic of a magnetic field and further points in the characteristic of the magnetic field on the basis of the magnetic field sensor signal, and to actuate the current interface to send a pulse sequence when a zero crossing or a further point in the magnetic field is detected, andwherein, in a first bit group of the number of bits of a respective pulse sequence, it is flagged whether the pulse sequence is a pulse sequence sent for a detected zero crossing or a pulse sequence sent for a detected further point, and, depending on whether it is a pulse sequence sent for a detected zero crossing or a pulse sequence sent for a detected further point, information modulated onto a second bit group of the number of bits of the respective pulse sequence is selected.2. The apparatus as claimed in claim 1 , wherein the number of bits of each pulse sequence is nine claim 1 , and the second bit of the number of bits indicates whether the pulse sequence is a pulse sequence sent for a detected zero ...

Communications system for a hydraulic brake system

A communications system is described for a hydraulic brake system, including a communications bus, a connected, first control device, a connected, second control device, and a further connected communications unit. In response to a loss of its communication with the first control device in spite of its regular communication with the at least one further communications unit, at least one instance of functional impairment of the first control device and/or of a first motorized device controlled by the first control device is detectable with the aid of the second control device. A hydraulic brake system for a vehicle, a method for checking a communications system, and a method for operating a hydraulic brake system of a vehicle, are also described.

BRAKE SYSTEM

A brake system may include an actuation device, in particular a brake pedal, a first piston-cylinder unit with two pistons, in particular an auxiliary piston and a second piston, in order to supply a pressure medium to brake circuits via a valve device. One of the pistons, in particular the auxiliary piston, can be actuated by means of the actuation device. The brake system may further include a second piston-cylinder unit with an electric motor-powered drive, a transmission, and at least one piston to supply a pressure medium to at least one of the brake circuits via a valve device and a motor-pump unit with a valve device to supply a pressure medium to the brake circuits. According to one aspect, a hydraulic travel simulator is connected to a pressure or working chamber of the first piston-cylinder unit. 129.-. (canceled)30. A brake system , comprising:an actuating device,a first piston-cylinder unit with at least one piston, comprising an auxiliary piston, and arranged to supply pressure medium via a valve device to brake circuits, the brake circuits comprising a first brake circuit and a second brake circuit, wherein the auxiliary piston is enabled to be actuated by means of the actuating device,a second piston-cylinder unit with an electromotive drive, a transmission and at least one piston, arranged to supply pressure medium to at least one of the brake circuits via a valve device,a motor-pump unit, with valve device, arranged to supply pressure medium to the brake circuits,a hydraulic travel simulator connected to a pressure chamber or working chamber of the first piston-cylinder unit,a storage container/reservoir, and one or more of the following:(a) the brake system further comprises a redundant seal arranged parallel to at least one piston seal of the first piston-cylinder unit, wherein between the piston seal and the redundant seal a hydraulic passage arranged in the cylinder wall opens into a cylinder, the hydraulic passage connecting a cylinder interior ...

BRAKE CONTROL DEVICE

A brake control device for controlling an electric parking brake may include: a piston capable of pressing a brake pad in accordance with the hydraulic pressure in a cylinder; a linearly moving member that adjusts, by reciprocating in the cylinder, the pressing force applied to the brake pad by the piston; and an actuator that moves the linearly moving member by operating based on a target pressing force, which is a target value of the pressing force corresponding to an output value obtained from a sensor that detects information correlating with the hydraulic pressure. The brake control device is provided with: an abnormality detection unit that detects an abnormality of the sensor; and an actuator control unit that, if an abnormality is detected, controls the operation level of the actuator based on an output value obtained prior to the detection of the abnormality. 1. A brake control device for controlling an electric parking brake provided with a piston that is capable of pressing a brake pad in accordance with the hydraulic pressure in a cylinder , a linearly moving member that adjusts , by reciprocating in the cylinder , a pressing force applied to the brake pad by the piston , and an actuator that moves the linearly moving member by operating on the basis of a target pressing force , which is a target value of the pressing force corresponding to an output value obtained from a sensor that detects information correlating with the hydraulic pressure , the brake control device comprising:an abnormality detection unit that detects an abnormality of the sensor; andan actuator control unit that, if the abnormality is detected, controls the operation level of the actuator on the basis of the output value prior to the detection of the abnormality.2. The brake control device according to claim 1 , wherein the actuator control unitdetermines that the abnormality occurs when the state in which the abnormality is detected continues for a predetermined time, andcontrols ...

ELECTRONICALLY CONTROLLABLE BRAKING SYSTEM HAVING TWO FALL-BACK LEVELS

An electronically controllable braking system for a vehicle is provided. The electronically controllable braking system includes a service brake sub-system and a redundancy brake sub-system. The service brake sub-system includes a front axle service brake circuit with front axle service brakes and a rear axle service brake circuit with rear axle service brakes. The redundancy brake sub-system includes a front axle redundancy brake circuit and a rear axle redundancy brake circuit. A service brake control module is configured to generate a service brake control signal in dependence upon a braking specification for generating a front axle service brake pressure. A redundancy brake control module is configured to generate a redundancy brake control signal in dependence upon a braking specification for generating a front axle redundancy brake pressure. 1. An electronically controllable braking system for a vehicle , comprising:a service brake sub-system including:a front axle service brake circuit with front axle service brakes,a rear axle service brake circuit with rear axle service brakes, anda service brake control module, wherein the service brake control module is configured to generate a service brake control signal in dependence upon a braking specification, wherein a front axle service brake pressure supplied to the front axle service brakes and a rear axle service brake pressure supplied to the rear axle service brakes are generated in dependence upon the service brake control signal under the electrical control of the service brake control module; anda redundancy brake sub-system including:a front axle redundancy brake circuit,a rear axle redundancy brake circuit, anda redundancy brake control module, wherein the redundancy brake control module is configured to generate a redundancy brake control signal in dependence upon a braking specification, wherein a front axle redundancy brake pressure supplied to the front axle service brakes and a rear axle redundancy ...

PRIMARY BRAKE CONTROL SYSTEM WITH ALTERNATE VEHICLE SYSTEM OVERRIDE

A system includes a first brake actuator for controlling pressure applied to a first brake, a BCU configured to receive a first plurality of inputs and to output a first BCU control signal for controlling the first brake actuator based on the first plurality of inputs, and a first switch coupled between the first brake actuator and the BCU. The system also includes a backup controller designed to receive a second plurality of inputs, determine a first backup control signal for controlling the first brake actuator based on the second plurality of inputs, determine that the BCU is functioning improperly based on the second plurality of inputs, and control the first switch to prevent the first BCU control signal from controlling the first brake actuator and to output the first backup control signal to the first brake actuator in response to determining that the BCU is functioning improperly. 1. A system for controlling a brake actuator corresponding to a first brake , comprising:a first brake actuator configured to control pressure applied to the first brake;a brake control unit (BCU) configured to receive a first plurality of inputs and to output a first BCU control signal for controlling the first brake actuator based on the first plurality of inputs;a first switch coupled between the first brake actuator and the BCU; and receive a second plurality of inputs,', 'determine a first backup control signal for controlling the first brake actuator based on the second plurality of inputs,', 'determine that the BCU is functioning improperly based on the second plurality of inputs, and', 'control the first switch to prevent the first BCU control signal from controlling the first brake actuator and to output the first backup control signal to the first brake actuator in response to determining that the BCU is functioning improperly., 'a backup controller electronically coupled to the first switch and the first brake actuator and configured to2. The system of claim 1 , wherein ...

SUPPLEMENTAL DECELERATION USING ELECTRONIC PARKING BRAKE IN FULLY INTEGRATED BRAKING SYSTEMS

A method and system for braking a vehicle using supplemental deceleration provided by an electronic parking brake. The method includes detecting a reduced function state of an integrated braking system; detecting a brake pedal input from an operator of the vehicle; and automatically generating a braking force via the electronic parking brake based on the brake pedal input and the reduced function state. 1. A method of braking a vehicle using supplemental deceleration provided by an electronic parking brake , the method comprising:detecting, with an electronic controller, a reduced function state of an integrated braking system;detecting, with the electronic controller, a brake pedal input from an operator of the vehicle;automatically, by the electronic controller, generating a supplemental braking force via the electronic parking brake based on the brake pedal input and the reduced function state.2. The method according to claim 1 , wherein the reduced function state of the integrated braking system includes a loss of primary brake boost.3. The method according to claim 1 , further comprising detecting claim 1 , with the electronic controller claim 1 , an abnormal brake status.4. The method according to claim 3 , further comprising generating claim 3 , by the electronic controller claim 3 , a signal to apply rear wheel isolation valves when the abnormal brake status is detected.5. The method according to claim 1 , further comprising receiving claim 1 , with the electronic controller claim 1 , a signal from a wheel slip sensor.6. The method according to claim 5 , wherein automatically generating the supplemental braking force via the electronic parking brake is further based on the received signal from the wheel slip sensor.7. The method according to claim 1 , wherein the automatically generating the supplemental braking force includes sending a brake request from the electronic controller to a parking brake electronic controller.8. The method of claim 7 , wherein ...

Brake system for aircraft

Disclosed is a brake system for aircraft that uses a control unit that is configured to control actuators at each wheel using one channel operating an associated brake control module, and other actuators at the same wheel using a second module operated completely independently using a second module. The use of the first and second groups of actuators are alternated periodically, e.g., for each flight.

ELECTRIC BRAKE SYSTEM AND METHOD THEREOF

Disclosed are an electric brake system and a control method thereof. The electric brake system includes a sensor part including at least three sensors among a motor position sensor MPS configured to measure a position of a motor, an acceleration sensor configured to measure a longitudinal acceleration of a vehicle, a wheel speed sensor configured to measure a wheel speed of the vehicle, and a pressure sensor configured to measure a brake hydraulic pressure of a wheel; and a controller configured to receive measured results from the at least three sensors among the motor position sensor MPS, the acceleration sensor, the wheel speed sensor, and the pressure sensor and determine that a sensor fails, which outputs a brake hydraulic pressure having a largest deviation among three or more brake hydraulic pressures that are estimated or measured from the at least three sensors. 1. An electric brake system of a vehicle , comprising:a sensor part including at least three sensors among a motor position sensor MPS configured to measure a position of a motor, an acceleration sensor configured to measure a longitudinal acceleration of a vehicle, a wheel speed sensor configured to measure a wheel speed of the vehicle, and a pressure sensor configured to measure a brake hydraulic pressure of a wheel; anda controller configured to receive measured results from the at least three sensors among the motor position sensor MPS, the acceleration sensor, the wheel speed sensor, and the pressure sensor and determine that a sensor fails, which outputs a brake hydraulic pressure having a largest deviation among three or more brake hydraulic pressures that are estimated or measured from the at least three sensors.2. An electric brake system of a vehicle , comprising:a sensor part including at least three sensors among a pedal position sensor configured to measure a position of a pedal, an acceleration sensor configured to measure a longitudinal acceleration of a vehicle, a wheel speed sensor ...

SYSTEMS AND METHODS FOR BRAKING IN AN AUTONOMOUS VEHICLE

Braking systems and methods for an autonomous vehicle are provided. Braking devices are associated with respective wheels of the autonomous vehicle. A hydraulic circuit is connected between a primary braking module (PBM) and the braking devices and connected between a secondary braking module (SBM) and the braking devices. One of a PBM electronic control unit and a SBM electronic control unit is configured to: in response to detecting a communications failure of the other braking module, apply a predetermined hydraulic pressure operation in the hydraulic circuit. The other of the PBM electronic control unit and the SBM electronic control unit is configured to identify, based on output from the at least one sensor, the predetermined hydraulic pressure operation being applied by the one of the PBM electronic control unit and the SBM electronic control unit, and select and execute a braking profile based thereon. 1. A braking system for an autonomous vehicle , comprising:a primary braking module (PBM) comprising a PBM electronic control unit and at least one sensor;a secondary braking module (SBM) comprising a SBM electronic control unit and at least one sensor;braking devices associated with respective wheels of the autonomous vehicle;a hydraulic circuit connected between the PBM and the braking devices and connected between the SBM and the braking devices;a communications bus connected between an autonomous driving system and each of the PBM and the SBM;wherein one of the PBM electronic control unit and the SBM electronic control unit is configured to:detect a communications failure of the other of the PBM electronic control unit and the SBM electronic control unit over the communication bus; andin response to detecting the communications failure, apply a predetermined hydraulic pressure operation in the hydraulic circuit; andwherein the other of the PBM electronic control unit and the SBM electronic control unit is configured to:identify, based on output from the at ...

Brake fluid pressure sensor validity determination device and determination method thereof

Disclosed herein are a brake fluid pressure sensor validity determination device and a determination method thereof. According to an embodiment of the present disclosure, the brake fluid pressure sensor validity determination device and the determination method thereof includes an inputter configured to receive a brake fluid pressure sensor value sensed by a brake fluid pressure sensor and receive a motor position sensor value sensed by a motor position sensor, an estimator configured to estimate a brake fluid pressure value on the basis of the motor position sensor value when the motor position sensor has not failed; and a determiner configured to determine whether the brake fluid pressure sensor has failed, determine whether the motor position sensor has failed when the brake fluid pressure sensor has not failed, and determine a validity of the brake fluid pressure sensor by comparing the estimated brake fluid pressure value with a brake fluid pressure sensor value.

ELECTRONIC BRAKE SYSTEM AND OPERATION METHOD

The present disclosure relates to an electronic brake system and an operation method thereof. The electronic brake system includes a reservoir in which a fluid is stored, a hydraulic pressure supply device configured to generate a hydraulic pressure by operating a hydraulic piston in response to a signal from a pedal displacement sensor detecting a displacement of a brake pedal, a hydraulic control unit including a first hydraulic unit configured to control the hydraulic pressure to be transferred from the hydraulic pressure supply device to a first hydraulic circuit including two wheel cylinders, and a second hydraulic unit configured to control the hydraulic pressure to be transferred from the hydraulic pressure supply device to a second hydraulic circuit including other two wheel cylinders. 1. An electronic brake system comprising:a reservoir in which a fluid is stored;a hydraulic pressure supply device configured to generate a hydraulic pressure by operating a hydraulic piston in response to a signal from a pedal displacement sensor detecting a displacement of a brake pedal;a hydraulic control unit comprising a first hydraulic unit configured to control the hydraulic pressure to be transferred from the hydraulic pressure supply device to a first hydraulic circuit comprising two wheel cylinders, and a second hydraulic unit configured to control the hydraulic pressure to be transferred from the hydraulic pressure supply device to a second hydraulic circuit comprising other two wheel cylinders;a master cylinder provided with at least one chamber and piston to pressurize and discharge the fluid, configured to provide a pedal feel in connection with the brake pedal, and connected to the first hydraulic circuit and the second hydraulic circuit; andan electronic control unit configured to control the hydraulic pressure supply device and valves,wherein the electronic control unit comprises:a first electronic control unit configured to control the first hydraulic unit; ...

VEHICLE CONTROL DEVICE

A vehicle control device that controls a vehicle electric brake system includes: a shutdown determination part that determines whether the vehicle control device itself has been previously shut down normally or abnormally; a cranking determination part that determines whether an instruction to perform a cranking at a start-up of the vehicle is based on a manual operation of a driver of the vehicle or automatically; a diagnosis part that performs a plurality of initial diagnoses of the vehicle control device at the start-up of the vehicle; and a diagnosis skip control part configured to provide control such that the diagnosis part skips at least one of the initial diagnoses when the shutdown determination part determines that the vehicle control device has been previously shut down abnormally, and at the same time, when the cranking determination part determines that the cranking has been conducted based on the driver's manual operation. 1. A vehicle control device which provides control on an electric brake system of a vehicle , comprising:a shutdown determination part configured to determine whether the vehicle control device itself has been previously shut down normally or abnormally;a cranking determination part configured to determine whether or not an instruction to perform a cranking at a start-up of the vehicle is based on a manual operation of a driver of the vehicle;a diagnosis part configured to perform a plurality of initial diagnoses of the vehicle control device at the start-up of the vehicle; anda diagnosis skip control part configured to provide control such that the diagnosis part skips at least one of the initial diagnoses so as to reduce a time required for the initial diagnoses or skips all of the initial diagnoses, when the shutdown determination part determines that the vehicle control device has been previously shut down abnormally, and at the same time, when the cranking determination part determines that the cranking has been conducted based ...

VEHICLE BRAKE MANAGEMENT DEVICE

A vehicle brake management device is disclosed. The vehicle brake management device of the present invention: detects, in real time, whether the brake performance of a vehicle in motion is abnormal such that a driver or a mechanic can easily check the abnormality, thereby identifying causes thereof according to a brake failure, and can repair or replace abnormal parts; displays an alert when a brake system malfunctions, particularly when in motion, so as to enable the driver to check the malfunction; and prevents starting so as to disable operations when an engine restarts after the operation has finished, thereby remarkably reducing the risk for the occurrence of an accident and increasing vehicle reliability to consumers. 1. A vehicle brake management device , comprising:at least one of a pedal effort sensor installed at one side of a brake pedal configured to receive a pedal effort of a vehicle driver and configured to detect the pedal effort; a vacuum sensor configured to detect a vacuum pressure inside of a booster which is a boosting component configured to multiple the pedal effort in cooperation with the pedal effort of the brake pedal; a pressure sensor connected to the booster and configured to detect the pressure of a master cylinder which is able to create an operational pressure in such a way to pressurize oil; and a pad sensor connected to the master cylinder and configured to measure an abrasion level of the disk pad of a disk drum provided at a wheel, thus managing the braking of the vehicle,wherein a controller is further provided, which is connected to at least one or one or more than one of the pedal effort sensor, the vacuum sensor, the pressure sensor and the pad sensor and is configured to receive a detection value thereof and determine any abnormality by comparing the detection value with a previously inputted reference setting value and output a result thereof in the form of a control signal.2. The device of claim 1 , wherein the controller ...

Integrated electronic brake apparatus and control method thereof

Disclosed are an integrated electronic brake apparatus and a control method thereof. The integrated electronic brake apparatus includes a main controller provided in a first area and configured to: drive a braking motor according to an operation of a pedal, drive an additional braking valve for additional braking, and generate a main control monitoring signal; the sub-controller provided in a second area and configured to: drive a main braking valve for braking of a vehicle and the braking motor according to the operation of the pedal, control a power of the additional braking valve, and generate a sub-control monitoring signal; and a connection bus configured to transfer a transmission/reception signal between the main controller and the sub-controller by connecting the first area and the second area within an enclosure with each other.

METHOD FOR THE AUTOMATED ELECTRONIC CONTROL OF A BRAKING SYSTEM AND ELECTRONICALLY CONTROLLABLE BRAKING SYSTEM IN A UTILITY VEHICLE

A method for automatic electronic control of a brake system in a vehicle includes reading a request signal for automatic electronic control of actuators in the vehicle. At least one of the actuators has an influence on actual longitudinal vehicle dynamics of the vehicle, and requests that are to be implemented by the actuators for realizing automatically requested target longitudinal vehicle dynamics are transmitted via the request signal. The method further includes plausibility-checking the request signal to establish whether the requests are, or can be, implemented completely or without error by the actuators, taking into account a tolerance, and determining a correction deceleration and/or a correction velocity if the implementation of at least one of the requests has not taken place, or cannot take place, completely or without error, taking into account the tolerance, in order to specify corrective braking. 1. A method for the automatic electronic control of a brake system in a vehicle the method comprising:reading a request signal for automatic electronic control of actuators in the vehicle, wherein at least one of the actuators has an influence on actual longitudinal vehicle dynamics of the vehicle, and wherein requests that are to be implemented by the actuators for realizing automatically requested target longitudinal vehicle dynamics are transmitted via the request signal;plausibility-checking the request signal to establish whether the requests are, or can be, implemented completely or without error by the actuators, taking into account a tolerance;determining a correction deceleration and/or a correction velocity if the implementation of at least one of the requests has not taken place, or cannot take place, completely or without error, taking into account the tolerance, in order to specify corrective braking, wherein the correction deceleration and/or the correction velocity are stipulated as a function of the at least one of the requests which has not ...

Control valve device for a rail vehicle brake

A control valve device for a highly available pneumatic brake system for a rail vehicle, having a compressed-air inlet which is or can be connected to an outlet of a discharge valve device; a compressed-air outlet which is or can be connected to a relay valve device; and a safety input which is or can be connected to a compressed-air source; wherein the control valve device fluidically connects the safety inlet to the compressed-air outlet in a first switching position and fluidically connects the compressed-air inlet to the compressed-air outlet in a second switching position; wherein the control valve device can modify the inlet pressure in the second switching position in accordance with a control device, in order to provide the outlet pressure.

Device for open-loop and closed-loop control of an electro-pneumatic parking brake circuit, electro-pneumatic handbrake system, vehicle and method for open-loop and closed-loop control of a electro-pneumatic parking brake circuit

A device designed for controlling and regulating an electro-pneumatic parking brake circuit includes a manual controller configured to actuate a parking brake via the electro-pneumatic parking brake circuit, the manual controller having a first circuit arrangement and a second circuit arrangement, the first circuit arrangement being a digital, bidirectional circuit arrangement and the second circuit arrangement being an analog circuit arrangement. The device further includes control electronics electrically connected to the manual controller. The first circuit arrangement is connected to the control electronics via a first connection cable and the second circuit arrangement is connected to the control electronics via a second connection cable. The first connection cable is a digital data transmission channel configured to enable a digital data transmission between the digital circuit arrangement and the control electronics. The second connection cable is an analog data transmission channel configured to enable an analog data transmission.

Method for Operating an Inertial Sensor and for Operating a Vehicle Having Such an Inertial Sensor, and Such a Vehicle

The disclosure relates to a method for operating an inertial sensor of a vehicle, in particular a motor vehicle, wherein measurement data of at least one measurement variable of the inertial sensor are captured during operation of the vehicle and are checked for error values in order to calibrate the inertial sensor. According to the disclosure, during operation of the vehicle, measurement data of a different measurement variable, which, however, correlates with the measurement variable of the inertial sensor, are captured by means of a reference sensor and are compared with the measurement data of the inertial sensor in order to record the error values in accordance with a deviation of the measurement data of the inertial sensor from the measurement data of the reference sensor. 1. A method for operating an inertial sensor of a vehicle , the method comprising:detecting, in operation of the vehicle, measurement data of at least one first measurement variable of the inertial sensor;calibrating the inertial sensor by checking for error values in the measurement data of the at least one first measurement variable of the inertial sensor;detecting, in operation of the vehicle, using a reference sensor, measurement data of a second measurement variable of the reference sensor that correlates with the at least one first measurement variable of the inertial sensor;comparing the measurement data of the second measurement variable of the reference sensor with the measurement data of the at least one first measurement variable of the inertial sensor; anddetecting the error values based on a deviation of the measurement data of the at least one first measurement variable of the inertial sensor from the measurement data of the second measurement variable of the reference sensor.2. The method as claimed in claim 1 , wherein the reference sensor is a rotational speed sensor configured to detect the rotational speed of a wheel of the vehicle as the second measurement variable.3. ...

Electronically pressure-controllable vehicle braking system and method for controlling an electronically pressure-controllable vehicle braking system

An electronically pressure-controllable vehicle braking system and a method for controlling an electronically pressure-controllable vehicle braking system are described. Such vehicle braking systems may stabilize a vehicle, assist the actuation of the vehicle braking system, and/or enable a fully automated or semi-automated driving operation. For this purpose, the vehicle braking systems include a primary actuator system which sets or regulates different braking pressures at the wheel brakes and furthermore includes an electronically controllable secondary actuator system which protects the vehicle braking system against, inter alia, failure of the primary actuator system. According to the invention, in the event of a fault in the primary actuator system, an activation of the secondary actuator system takes place in such a way that the secondary actuator system generates a braking pressure which, taking into account the dynamic axle load displacement in the direction of the front axle taking place during a braking operation, is greater than the braking pressure convertible into a braking power by the wheel brakes on the rear axle. A provided unit reduces this braking pressure at the at least one wheel brake of the rear axle to a value at which the wheel of the motor vehicle assigned to the at least one wheel brake of the rear axle does not lock.

SENSOR CIRCUIT COMPENSATION FOR SUPPLY VOLTAGE TRANSIENTS

A wheel speed sensor interface receives an analog signal from a wheel speed sensor and converts the analog signal to a digital wheel speed sensor output signal. A detector circuit is configured to detect a transient occurring within a voltage source powering the wheel speed sensor, and compensate the digital wheel speed sensor output signal as a function of the detection of the transient so that it is an accurate representation of a wheel speed detected by the wheel speed sensor. The detector circuit includes a current mirror coupled to the voltage source, and outputs a compensation current to a current comparator of the wheel speed sensor interface. 1. A wheel speed sensor interface comprising:circuitry configured to receive an analog signal from a wheel speed sensor;a decoder configured to convert the analog signal received from the wheel speed sensor to a digital wheel speed sensor output signal; anda detector circuit configured to (1) detect a transient occurring within a voltage source powering the wheel speed sensor, and (2) compensate the digital wheel speed sensor output signal as a function of the detection of the transient occurring within the voltage source powering the wheel speed sensor.2. The wheel speed sensor interface as recited in claim 1 , wherein the detector circuit is configured to compensate the digital wheel speed sensor output signal so that it is an accurate representation of a wheel speed detected by the wheel speed sensor.3. The wheel speed sensor interface as recited in claim 1 , wherein the detector circuit is configured to compensate the digital wheel speed sensor output signal so that a value of the digital wheel speed sensor output signal is not modified by the transient occurring within the voltage source powering the wheel speed sensor.4. The wheel speed sensor interface as recited in claim 1 , wherein the transient is a spike in a voltage level supplied to the wheel speed sensor.5. The wheel speed sensor interface as recited in ...

SENSOR-EQUIPPED VEHICLE BRAKING SYSTEMS, DEVICES, AND METHODS

Methods, devices, and systems, for analyzing and managing data generated by a sensor-equipped braking system for vehicles, comprising a support element a block of friction material, at least one sensor interposed between the block of friction material and the support element, comprising at least one central control unit capable of receiving in real time from the sensor means at least the basic data related to one or more of the pressure of the activated braking system, the temperature of the activated braking system, the braking torque, the residual braking torque when the braking system is deactivated, and the wear on the braking system during and after activation thereof. The system can also include one or more auxiliary sensors. 1. (canceled)2. A system including a sensor-equipped braking device for a vehicle , the system comprising: a support;', 'a friction material connected to the support; and', 'a first sensor configured to measure one or more parameters associated with braking operation of the braking device;, 'a braking device comprisingone or more memory devices; and receive first data corresponding to one or more measurements output by the first sensor;', 'receive second data associated with operation of the vehicle other than braking operation, the second data corresponding to one or more measurements output by a second sensor positioned with respect to the vehicle separate from the braking device;', 'analyze at least one of the first data and the second data to determine an occurrence of an event associated with the vehicle; and', 'store, in the one or more memory devices, the first data corresponding to a time of the event associated with the vehicle., 'a computing system configured to3. The system of claim 2 , wherein the event is a vehicle collision.4. The system of claim 2 , wherein the braking information comprises a normal force.5. The system of claim 4 , wherein the first sensor comprises a pressure sensor.6. The system of claim 2 , wherein the ...

Brake Fluid Detection System

A brake fluid detection system used for detecting the brake fluid quality of a brake device is revealed. The detection system includes a first device having a detection unit connected to a data transmission unit, a second device composed of a data storage unit, a data analysis unit, and a data processing unit, and a third device provided with an application software. The data transmission unit is provided with a wireless communication module. The third device is a portable internet device. The third device receives detected data obtained and uploaded by the first device and users set the detected data by operating the application software. Then the original detected data and the detected data set by users is sent to the data processing unit of the second device through a wireless network for data processing to get detection data. Lastly detection data is displayed on the third device. 1. A brake fluid detection system comprising:a first device havinga detection unit which is a probe arranged with a sensing circuit and in direct contact with a brake fluid to be detected for sensing changes in water content or temperature of the brake fluid;a transmission unit which is connected to the detection unit and is provided with a wireless communication module for providing a wireless connection and sending detected data from the detection unit;a second device which is a cloud database includinga data storage unit, a data analysis unit, and a data processing unit;a third device which is a portable internet device provided with an application software for receiving and displaying data of the brake fluid after detection; the application software having an operation interface;wherein the wireless communication module receives detected data obtained through the detection in the fluid tank by the detection unit and sends the detected data to the third device through wireless connection; then the detection data is further transmitted to the second device through the third device ...

METHOD FOR OPERATING A BRAKING DEVICE

A method for operating a braking device of a vehicle, including a main braking system, and a backup braking system. The braking device includes a main braking system control unit, and a backup braking system control unit. The method includes detecting an error of a brake function of the braking system, locating the error inside the braking device, classifying the error with regard to the corresponding brake function and the braking system, and transferring a brake function detected as erroneous for the main braking system to the backup braking system in the event that the error concerns solely the main braking system, so that the brake function may still be carried out with the aid of the backup braking system. 113- (canceled)14. A method for operating a braking device of a vehicle , the braking device including a main braking system , and a backup braking system using which brake functions of the main braking system may be taken over , the braking device further including a main braking system control unit , via which brake functions of the main braking system may be activated or deactivated , and a backup braking system control unit , which is connected to the main braking system control unit and via which brake functions of the backup braking system may be activated or deactivated , the method comprising the following steps:detecting an error of a brake function of the braking system;locating the error inside the braking device;classifying the error with regard to the brake function and the braking system; andtransferring the brake function detected as erroneous for the main braking system to the backup braking system when the error concerns solely the main braking system, so that the brake function may still be carried out using the backup braking system.15. The method as recited in claim 14 , wherein the error is detected prior to a failure of the brake function of the braking system claim 14 , when a measured parameter exceeds a threshold value defined ...

Facilitation of smart communications hub to support driverless vehicles in 5g networks or other next generation networks

A smart communications hub can enable management of driverless and/or autonomous vehicles. Separating current wireless data from driverless vehicle sensor data can allow for quicker resolutions involving driverless vehicles. The smart communications hub can communicate to other groups such as driverless vehicle providers, service providers, vehicle management, law enforcement, etc. The smart communications hub can also process request from both mobile applications and micro-service applications.

Method and Electronic Circuit Assembly for the Redundant Signal Processing of a Safety-Relevant Application, Motor Vehicle Brake System, Motor Vehicle Having Said Motor Vehicle Brake System, and Use of Such an Electronic Circuit Assembly

The invention relates to a method for the redundant signal processing of a safety-relevant application, in particular of a safety control unit of a motor vehicle, wherein at least two redundant signals are fed from at least one sensor () to an electronic circuit assembly () as input signals () for processing of the sensor information. At least one input signal () is converted into a different test signal (). In the electronic circuit assembly (), the one or more input signals () are fed to a first peripheral module () of a microcontroller (), and the test signal () is fed to an additional peripheral module () of the microcontroller (). The sensor information of the input signals () and of the test signal () are thus redundantly processed independently of each other in a respective peripheral module () of the microcontroller (). The invention further relates to an electronic circuit assembly () for performing such a method, a motor vehicle brake system, a motor vehicle having said brake system, and a use of such en electronic circuit assembly. 1426612102. A method for the redundant signal processing a safety-relevant application , in particular of a safety control unit within a motor vehicle , wherein at least two redundant signals are fed from at least one sensor () to an electronic circuit arrangement () as input signals () for the processing of the sensor information , at least one input signal () of which is processed in a peripheral module () of a microcontroller () of the electronic circuit arrangement () ,characterized in that{'b': 6', '16', '16', '6, 'at least one input signal () is converted into a test signal (), wherein the test signal () differs from the input signal () but retains the sensor information,'}{'b': 16', '18', '10', '16, 'the test signal () is fed to an additional peripheral module () of the microcontroller () for the processing of the sensor information of the test signal (), and'}{'b': 6', '12', '10', '16', '18', '10, 'the processing of the ...

VEHICLE BRAKE SYSTEM

The vehicle brake system includes a cylinder, an output piston disposed in the cylinder, an input piston disposed in the cylinder but separating from the output piston and defining a separation chamber therebetween, a brake pedal connected to the input piston, a reaction force generating device for generating an elastic reaction force, a separation lock valve for controlling the communication between the separation chamber and the reaction force generating device, a fade state judging portion to judge whether the friction brake device is in a fade state or not and a friction braking force control portion for changing the mode to the fade state when the fade state judging portion judged that the friction brake device is in the fade state, wherein a desired friction braking force can be assured even under the brake fade state. 1. A vehicle brake system for generating a friction braking force at a wheel of a vehicle by a friction brake device by supplying a wheel cylinder of the friction brake device with a brake fluid , comprising:a master cylinder connected to the wheel cylinder;an output piston provided in the master cylinder and slidably movable therein, the output piston being driven by a hydraulic pressure in a servo chamber defined in the master cylinder and variably changing a volume of a master chamber filled with the brake fluid to be supplied to the wheel cylinder;an input piston provided in the master cylinder at a front of the output piston and slidably movable therein, the input piston defining a separation chamber to be filled with the brake fluid in the master cylinder between the output piston and the input piston, the output piston being operable with an operation of a brake operating member;a separation lock valve for closing or opening the separation chamber;a servo pressure generating portion for generating a servo pressure in the servo chamber;a fade state judging portion for judging whether the friction brake device is in a fade state or not; and ...

DIFFERENTIAL EMERGENCY/PARK ELECTRIC BRAKE SYSTEM

A system, apparatus and method provide emergency differential braking for effecting braked steering of an aircraft. A brake input device is provided that not only allows for emergency and parking brake functions, but also enables differential braking. The brake input device (e.g., a parking and/or emergency brake lever, pedal, handle, etc.) can be used in a brake system including a brake system control unit (BSCU), one or more electro-mechanical actuator controllers (EMACs) and a brake assembly including one or more electrical actuators. Each EMAC is electrically coupled to one or more of the actuators so as to provide electrical power for driving the actuators. Each EMAC is also communicatively coupled to the BSCU so as to receive braking data therefrom. In an emergency, the input device sends braking signals directly to the brake actuators. 1. (canceled)2. An emergency brake input device for providing emergency braking signals to at least two brake assemblies , the device comprising:an input member movable in a first direction corresponding to a braking magnitude and movable in a second direction corresponding to a relative distribution of the braking magnitude between first and second brake signals for the control of the at least two brake assemblies,wherein the first and second brake signals are configured to be modulated during emergency braking so as to apply differential braking to separate wheels of an aircraft; andwherein the member is a handle that is movable linearly to indicate braking magnitude and rotatable to indicate relative distribution of the braking magnitude.3. An emergency brake input device as set forth in claim 2 , wherein the first brake signal and the second brake signal are electric. This application claims priority to and is a divisional application of U.S. patent application Ser. No. 14/939,663 entitled “Differential Emergency/Park Electric Brake System” and filed Nov. 12, 2015, the contents of which are hereby incorporated by reference ...

BRAKING CONTROL SYSTEM AND METHOD OF VEHICLE

A braking control system and method of a vehicle are configured to safely stop the vehicle by determining whether a brake line fails via detecting a change in braking pressure and compensating for braking force through an engaging operation of an electric parking brake (EPB) when determining that the brake line fails in association with driver manipulation of the brake pedal. The braking control system includes: a vehicle speed detector; a wheel lock detector; a brake pedal operation detector that determines whether a brake pedal is operated; a brake line failure detector that determines whether the brake line fails when the brake pedal is operated; and a controller configured to engage the EPB when a current vehicle speed is equal to or greater than a predetermined vehicle speed, a current state is a wheel-unlock state, and the brake line fails. 1. A braking control system of a vehicle , the system comprising:a vehicle speed detector configured to determine whether a current vehicle speed is equal to or greater than a predetermined vehicle speed;a wheel lock detector configured to determine whether a wheel lock occurs;a brake pedal operation detector configured to determine whether a brake pedal is operated;a brake line failure detector configured to detect whether a brake line fails when the brake pedal is operated; anda controller configured to control an electric parking brake (EPB) to be engaged when the current vehicle speed is equal to or greater than the predetermined vehicle speed, a current state is a wheel-unlock state, and the brake line failure detector detects that the brake line fails.2. The system of claim 1 , wherein the vehicle speed detector is a vehicle speed sensor.3. The system of claim 1 , wherein the wheel lock detector is a wheel speed sensor.4. The system of claim 1 , wherein the brake pedal operation detector is a brake pedal stroke sensor.5. The system of claim 1 , wherein the brake line failure detector comprises:a first valve connected ...

INTEGRATED ELECTRONIC BRAKE SYSTEM AND CONTROL METHOD THEREOF

An integrated electronic brake system includes a main control section configured in a first area to receive one or more of a value from a pedal sensor, a value from a cylinder pressure sensor, a value from a wheel speed sensor, or an EPB signal to perform EPB control and drive a main braking valve and a braking motor for the main braking of a vehicle, and to drive an additional braking valve for the additional braking, a sub-control section configured in a second area to receive one or more of the value from the pedal sensor, the value from the wheel speed sensor, or the EPB signal to perform the EPB control and drive the main braking valve and the braking motor through a bypass circuit, and a connection bus connecting the first area and the second area mounted in one box to transfer signals between the main control section and the sub-control section. 1. An integrated electronic brake system comprising:a main control section configured in a first area to receive any one or more of a value from a pedal sensor, a value from a cylinder pressure sensor, a value from a wheel speed sensor, or an electronic parking brake (EPB) signal, to perform EPB control, to drive a main braking valve and a braking motor for a main braking operation of a vehicle depending on manipulation of a pedal, and to drive an additional braking valve for an additional braking operation;a sub-control section configured in a second area to, when a driving signal is input, receive any one or more of the value from the pedal sensor, the value from the wheel speed sensor, or the EPB signal, to perform the EPB control, and to drive the main braking valve and the braking motor for the main braking operation of the vehicle depending on the manipulation of the pedal through a bypass circuit; anda connection bus configured to connect the first area and the second area, mounted in one box, and to transfer transmission/reception signals between the main control section and the sub-control section.2. The ...

Brake system

A brake system may include an actuating device, in particular a brake pedal; a first piston-cylinder unit having two pistons subjecting the brake circuits to a pressure medium via a valve device, wherein one of the pistons can be actuated by the actuation device; a second piston-cylinder unit having an electric motor drive, a transmission at least one piston to supply at least one of the brake circuits with a pressure medium via a valve device; and a motor pump unit with a valve device to supply the brake circuits with a pressure medium. The brake system may also include a hydraulic travel simulator with a pressure or working chamber which is connected to the first piston-cylinder unit.

Device and method for operating a motor vehicle

A device for operating a motor vehicle, having an input for a respective external rotational speed sensor; a first control device; a second control device having a rotational speed acquisition device for each rotational speed sensor, a rotational speed signal of the rotational speed acquisition devices being capable of being supplied to the first control device and to outputs of the device; a computing device by which wheel rotational speeds can be ascertained; the rotational speed acquisition devices being functionally decoupled from one another; and the second control device being functionally decoupled from the first control device and from the computing device.

Collision mitigation device

When no diagnostic signal is detected, an activation determination operation unit 15 B determines whether to activate a controlled object 16 based on the result of calculation (FSN information) by an FSN computation unit 14 and the vehicle state of the own vehicle input by a vehicle state input unit 13 . An activation determination diagnosis unit 15 C determines whether the activation determination operation unit 15 B has properly performed an activation determination. When it is determined that the activation determination operation unit 15 B has properly performed the activation determination, the control of the controlled object 16 based on the activation determination is permitted. When it is determined that the activation determination operation unit 15 B has not properly performed the activation determination, the control of the controlled object 16 based on the activation determination is not permitted.

DRIVER AND DIAGNOSTIC SYSTEM FOR A BRAKE CONTROLLER

A brake control unit includes a processor, a first high side driver and a second high side driver. The processor sends signals to the first high side driver and the second high side driver. The first and second high side drivers process the signals independent of each other. The processor diagnoses faults and locations of faults based on feedback from the high side drivers. The first high side driver controls the braking of a first trailer brake. The second high side driver controls the braking of a second trailer brake. 1. A brake control unit comprising:a processor;a first high side driver; anda second high side driver, wherein the processor is coupled to the first high side driver through a first connection and the second high side driver through a second connection,wherein the processor generates a first signal applied to the first connection in order to induce braking in at least one first brake of a towed vehicle, and generates a second signal applied to the second connection in order to induce braking in at least one second brake of the towed vehicle.2. The brake control unit of claim 1 , wherein the processor determines whether to apply the first signal and the second signal asynchronously.3. The brake control unit of claim 1 , wherein the processor determines to apply the first signal and the second signal asynchronously based on identifying at least one of a brake lock condition claim 1 , swaying claim 1 , back-up claim 1 , or slippage of a vehicle.4. The brake control unit of claim 1 , wherein the first high side driver comprises a first diagnostic circuit and the second high side drive comprises a second diagnostic circuit.5. A brake control unit comprising:a processor;a diagnostic circuit comprising:a first driver; anda second driver comprising a plurality of field effect transistors, wherein the processor is coupled to the first driver and the second driver and wherein the first driver is connected with the second driver.6. The brake control unit of ...

SYSTEM AND METHOD FOR ASSESSING HEALTH OF BRAKE ROTORS

A system includes a brake torque request module, a brake control module, and a diagnostic module. The brake torque request module is configured to generate a brake torque request based on a brake pedal position during a braking event. The brake control module is configured to apply friction brakes on a wheelset of a vehicle to satisfy the brake torque request during the braking event. The wheelset includes less than all wheels of the vehicle. The diagnostic module is configured to detect a fault in a brake rotor on a wheel in the wheelset based on vehicle operating conditions measured during the braking event. 1. A system comprising:a brake torque request module configured to generate a brake torque request based on a brake pedal position during a braking event;a brake control module configured to apply friction brakes on a wheelset of a vehicle to satisfy the brake torque request during the braking event, wherein the wheelset includes less than all wheels of the vehicle; anda diagnostic module configured to detect a fault in a brake rotor on a wheel in the wheelset based on vehicle operating conditions measured during the braking event.2. The system of wherein the wheelset includes only two of the wheels of the vehicle.3. The system of wherein the vehicle operating conditions include brake circuit pressure claim 1 , vehicle longitudinal acceleration claim 1 , and wheel speed.4. The system of wherein the brake control module is configured to:determine whether an enabling condition is met;apply the friction brakes on the wheelset to satisfy the brake torque request when the enabling condition is met; andapply the friction brakes on all of the wheels of the vehicle to satisfy the brake torque request when the enabling condition is not met, wherein the enabling condition is met when the brake pedal position, a deceleration of the vehicle, and a speed of the vehicle are greater than predetermined values.5. The system of wherein the brake control module is configured to: ...

BRAKING ARRANGEMENT FOR A VEHICLE

A braking arrangement for a vehicle includes a source of compressed air, a drive axle for the vehicle, a brake associated with the drive axle and connected to the source of compressed air by an air line, an operator controlled valve in the air line between the source of compressed air and the brake, a proportioning valve in the air line between the operator controlled valve and the brake. A compressor is driven by the drive axle or a drive shaft of the vehicle and has an outlet connected to a control port of the proportioning valve. 1. A braking arrangement for a vehicle , comprising:a source of compressed air;a drive axle for the vehicle;a brake associated with the drive axle and connected to the source of compressed air by an air line;an operator controlled valve in the air line between the source of compressed air and the brake;a proportioning valve in the air line between the operator controlled valve and the brake; anda compressor driven by the drive axle and having an outlet connected to a control port of the proportioning valve.2. The braking arrangement for the vehicle as set forth in claim 1 , comprising a second proportioning valve in the air line claim 1 , and a suspension airbag having an outlet connected to a control port of the second proportioning valve.3. The braking arrangement for the vehicle as set forth in claim 2 , wherein the second proportioning valve is disposed between the proportioning valve and the brake.4. The braking arrangement for the vehicle as set forth in claim 1 , further comprising an antilock brake system (ABS) associated with the brake claim 1 , means for determining whether the ABS is operating properly and adapted to send a signal to a controller claim 1 , the controller being configured to start operation of the compressor upon receipt of a signal that the ABS is not operating properly.5. The braking arrangement for the vehicle as set forth in claim 4 , further comprising a controlled valve disposed between the outlet of the ...

VEHICLE ELECTRIC BRAKING DEVICE AND METHOD OF CONTROLLING THE SAME

The present application provides a vehicle electric braking device that can safely stop a vehicle even when a failure occurs. 1. A vehicle electric braking device comprising a wheel brake which is connected to a power source mounted on a vehicle and performs braking operation of a brake mechanism of wheels of the vehicle ,wherein the wheel brake includes:a motor which has two sets of independent coil windings, a first coil winding and a second coil winding, and drives a braking mechanism of the wheels of the vehicle;a first controller which is connected to the first coil winding of the motor and controls the motor; anda second controller which is connected to the second coil winding of the motor and controls the motor, andwherein the first controller includes: the first inverter circuit which supplies a current to the first coil winding of the motor; and a first control circuit section which is mounted with a first output circuit that outputs a control signal which is for driving the motor and a first central processing unit which calculates a control amount of the motor and outputs a control signal to the first output circuit, anda first power source relay circuit that interrupts the current supplied to the first coil winding of the motor, andwherein the second controller includes: a second inverter circuit which supplies a current to the second coil winding of the motor; and a second control circuit section which is mounted with a second output circuit that outputs a control signal which is for driving the motor and a second central processing unit which calculates a control amount of the motor and outputs a control signal to the second output circuit, anda second power source relay circuit that interrupts the current supplied to the second coil winding of the motor, andwherein the wheel brake is provided on at least any one of the wheels of the vehicle, andwherein the power source is constituted of a first power source, a second power source, and a third power ...

Distinguishing between egr valve and oxygen sensor degradation

A diagnostic method for an engine having a valve for controlling dilution of intake air. The method comprises, during engine fueling, indicating a degradation of the valve when the valve is commanded closed but sensor output corresponds to an oxygen level below that of air. The method further comprises, absent engine fueling, indicating degradation of the sensor when the valve is commanded closed but the sensor output corresponds to an oxygen level below that of air.

Brake control device for vehicle

A brake ECU sets two sensor state flags to fix states of first and second master pressure sensors as an abnormal state when a value of a simultaneous timer becomes equal to or larger than an abnormal-state fixing time. The simultaneous timer serves to measure a time that the first master pressure sensor is determined to be not under a normal state and the second master pressure sensor is determined to be not under a normal state on the basis of the sensor state flags. The abnormal-state fixing time is set to a time shorter than an abnormal-state fixing time used for changing the state of each of the master pressure sensors from an invalid state to an abnormal state.

Brake system and method of operating

A vehicle braking system includes a brake pedal, master cylinder, a braking circuit with a wheel cylinder, and a brake pressure generator. A pedal feel simulator is coupled to the master cylinder output side through a switchable valve, the pedal feel simulator providing a reaction force. An isolation valve closes to isolate the braking circuit from the master cylinder and the simulator circuit. A primary pressure sensor generates a braking request signal responsive to the brake pedal. A controller activates the brake pressure generator to apply a braking force to the wheel cylinder based on the braking request signal. The controller identifies an abnormal value from the primary pressure sensor and couples the pedal feel simulator with a secondary pressure sensor within the braking circuit to determine whether the abnormal value indicates a primary pressure sensor malfunction or a malfunction of the pedal feel simulator or the switchable simulator valve.