IN-VEHICLE STABLE PLATFORM SYSTEM EMPLOYING ACTIVE SUSPENSION AND CONTROL METHOD THEREOF

An in-vehicle stable platform system employing active suspension and a control method thereof is provided. The system includes a vehicle body, an in-vehicle stable platform, an inertial measurement device, an electronic control device, a servo controller set, multiple wheels, and suspension servo actuation cylinders and displacement sensors respectively corresponding to the wheels. The wheels are divided into three groups, which form three support points. The heights of the three support points are controlled to control orientation of the vehicle body. An amount of extension/retraction of the suspension servo actuation cylinders required to cause the in-vehicle stable platform to return to a horizontal level is calculated according to a measured pitch angle and a roll angle of the in-vehicle stable platform, and when a vehicle travels on an uneven road, the extension/retraction of each suspension servo actuation cylinder is controlled to cause the in-vehicle stable platform to be horizontal. 1. A control method of an orientation of a vehicle employing active suspension , characterized in that the vehicle has three or more wheels , the wheels are divided into three groups , which constitute three support points for supporting a vehicle body; heights of the three support points are controlled to control an orientation of the vehicle body; each of the wheel groups has one wheel or multiple wheels therein , when the number of wheels in some wheel group is greater than one , upper chambers and lower chambers of all of the suspension servo actuation cylinders in the wheel group are respectively communicated , and the wheel group forms a support point for supporting the vehicle body , three wheel groups form three support points , so that the orientation of the vehicle body is controlled according to a principle that a plane is determined by three points.2. The control method of the orientation of the vehicle employing active suspension according to claim 1 , characterized ...

ACTIVE-PASSIVE DUAL MODE SWITCHABLE VEHICLE SUSPENSION SYSTEM AND SWITCHING METHOD THEREFOR

An active-passive dual mode switchable vehicle suspension system is provided. The suspension system includes a filter, a hydraulic pump, a one-way valve, a power takeoff, a servo valve, a suspension cylinder, an overflow valve, an energy accumulator, a reversing valve, a first pressure sensor, a second pressure sensor, a controller, an oil tank and a displacement sensor. Further related is a switching method for the active-passive dual mode switchable vehicle suspension system. When the active and passive dual-mode switchable vehicle suspension system is switched between modes, an oil pressure in the rodless cavity of the suspension cylinder and an oil pressure in the energy accumulator are adjusted to be equal in advance, so that the stable switching of the active-passive suspension system can be realized, and the vibration of the vehicle body is eliminated when the existing active-passive suspension system is switched. Moreover, the accumulator and overflow valve can be shared in the active and passive suspension mode, thereby effectively reducing the use number of accumulators and overflow valves, greatly saving the layout space of the vehicle body, effectively reducing the total weight of the vehicle body, which is favorable to the lightweight of the vehicle chassis. 1. An active-passive dual mode switchable vehicle suspension system , comprising a filter , a hydraulic pump , a one-way valve , a power take-off , a servo valve , a suspension cylinder , an overflow valve , an energy accumulator , a reversing valve , a first pressure sensor , a second pressure sensor , a controller , an oil tank and a displacement sensor; wherein the filter has an oil inlet communicated with the oil tank through an oil pipe , and has an oil outlet communicated with an oil inlet of the hydraulic pump through an oil pipe; the hydraulic pump has an oil outlet communicated with an oil inlet of the one-way valve through an oil pipe , the one-way valve has an oil outlet communicated with ...

VEHICLE-MOUNTED MOTION SIMULATION PLATFORM BASED ON ACTIVE SUSPENSION, AND CONTROL METHOD THEREOF

A vehicle-mounted motion simulation platform based on active suspension and a control method thereof is provided. The vehicle-mounted motion simulation platform includes a vehicle body, a motion simulation platform fixedly connected to the vehicle body, an upper computer for posture control, a gyroscope, a plurality of wheels, and suspension servo actuating cylinders and displacement sensors corresponding to the wheels respectively, an electronic control unit, and a servo controller group. The electronic control unit calculates posture control parameters based on the posture instructions of the motion simulation platform input by the upper computer for posture control and posture information of the motion simulation platform measured by the gyroscope, and then outputs the posture control parameters to the servo controller group. The servo controller group controls extension of the respective suspension servo actuating cylinders according to the posture control parameters to realize follow-up control over the posture of the motion simulation platform. 1. A vehicle-mounted motion simulation platform based on active suspension , comprising a vehicle body , a motion simulation platform fixedly connected to the vehicle body , an upper computer for posture control , a gyroscope , an electronic control unit , a servo controller group , a plurality of wheels , suspension servo actuating cylinders respectively corresponding to the wheels one by one , and displacement sensors respectively corresponding to the wheels one by one; wherein the gyroscope is fixed on the motion simulation platform; the electronic control unit and the servo controller group are fixed on the vehicle body; the wheels are connected to a lower part of the vehicle body by the suspension servo actuating cylinders; the displacement sensors are used to measure stroke of the suspension servo actuating cylinders; the electronic control unit is in communication with the gyroscope and the servo controller group ...

INERTIAL REGULATION ACTIVE SUSPENSION SYSTEM BASED ON VEHICLE POSTURE DEVIATION, AND CONTROL METHOD THEREOF

An inertial regulation active suspension system based on posture deviation of a vehicle and a control method thereof are provided. The system comprises a vehicle body, an inertial measurement unit, an electronic control unit, a servo controller group, a plurality of wheels, suspension servo actuating cylinders respectively corresponding to the wheels, and displacement sensors for measuring a stroke of the suspension servo actuating cylinders. The electronic control unit reads posture parameters of the vehicle body measured by the inertial measurement unit, and calculates a deviation between the postures of the vehicle body at a current moment and at a previous moment, and then outputs posture control parameters to the servo controller group. The servo controller group controls extension and retraction of each of the suspension servo actuating cylinders according to the posture control parameters and displacement feedback values of the displacement sensors. 1. An inertial regulation active suspension system based on posture deviation of a vehicle , comprising a vehicle body and a plurality of wheels , an inertial measurement unit , an electronic control unit , a servo controller group , suspension servo actuating cylinders corresponding to the wheels one by one , and displacement sensors , wherein the inertial measurement unit , the electronic control unit and the servo controller group are secured to the vehicle body; the wheels are connected to a lower part of the vehicle body through the suspension servo actuating cylinders; the displacement sensors are used for measuring strokes of the suspension servo actuating cylinders; the electronic control unit is communicated with the inertial measurement unit and the servo controller group , respectively; the servo controller group is communicated with the displacement sensors; the electronic control unit reads posture parameters of the vehicle measured by the inertial measurement unit , and calculates a posture deviation ...

Inertial regulation active suspension system based on vehicle posture deviation, and control method therefor

Disclosed are an inertial regulation active suspension system based on vehicle posture deviation, and a control method therefor. The system comprises a vehicle body (13), an inertial measurement unit (1), an electronic control unit (11), a servo controller group (12), a plurality of wheels (2, 3, 4), suspension servo actuating cylinders (5, 6, 7) corresponding to the wheels on a one-to-one basis, and displacement sensors (8, 9, 10) for measuring the distance traveled of the suspension servo actuating cylinders (5, 6, 7). The electronic control unit (11) reads posture parameters of the vehicle body (13) measured by the inertial measurement unit (1), and calculates a deviation between the postures of the vehicle body (13) at the current moment and at the previous moment, and then outputs posture control parameters to the servo controller group (12). The servo controller group (12) controls the expansion of the suspension servo actuating cylinders (5, 6, 7) according to the posture control parameters and displacement feedback values of the displacement sensors (8, 9, 10), such that the center of mass of a vehicle moves along a straight line or a curved line when the vehicle is driven on an uneven road surface, and the posture of the vehicle is kept unchanged, so that vibration of the vehicle body (13) when the vehicle is driven on a complex road surface is reduced, and the driving speed, handling stability and driving smoothness of the vehicle are thus improved.

Vehicle-mounted motion simulation platform based on active suspension, and control method thereof

Disclosed are a vehicle-mounted motion simulation platform based on active suspension and a control method therefor. The vehicle-mounted motion simulation platform comprises a vehicle body (13), a motion simulation platform (14) fixedly connected to the vehicle body (13), an upper computer (15) for posture control, a gyroscope (1), a plurality of wheels (2, 3, 4), suspension servo actuating cylinders (5, 6, 7) and displacement sensors (8, 9, 10) corresponding to the wheels on a one-to-one basis, an electronic control unit (11), and a servo controller group (12). The electronic control unit (11) calculates posture control parameters based on posture instructions of the motion simulation platform (14) input by the upper computer (15) for posture control and posture information of the motion simulation platform (14) measured by the gyroscope (1), and then outputs the posture control parameters to the servo controller group (12). The servo controller group (12) controls the extension of the respective suspension servo actuating cylinders (5, 6, 7) according to the posture control parameters to realize follow-up control over the posture of the motion simulation platform (14).

Vehicle-mounted motion simulation platform based on active suspension, and control method therefor

A vehicle-mounted motion simulation platform based on active suspension and a control method thereof is provided. The vehicle-mounted motion simulation platform includes a vehicle body, a motion simulation platform fixedly connected to the vehicle body, an upper computer for posture control, a gyroscope, a plurality of wheels, and suspension servo actuating cylinders and displacement sensors corresponding to the wheels respectively, an electronic control unit, and a servo controller group. The electronic control unit calculates posture control parameters based on the posture instructions of the motion simulation platform input by the upper computer for posture control and posture information of the motion simulation platform measured by the gyroscope, and then outputs the posture control parameters to the servo controller group. The servo controller group controls extension of the respective suspension servo actuating cylinders according to the posture control parameters to realize follow-up control over the posture of the motion simulation platform.

Vehicle-mounted motion simulation platform based on active suspension, and control method therefor

Vehicle-mounted motion simulation platform based on active suspension, and control method therefor

In-vehicle stable platform system employing active suspension and control method thereof

An in-vehicle stable platform system employing active suspension and a control method thereof is provided. The system includes a vehicle body, an in-vehicle stable platform, an inertial measurement device, an electronic control device, a servo controller set, multiple wheels, and suspension servo actuation cylinders and displacement sensors respectively corresponding to the wheels. The wheels are divided into three groups, which form three support points. The heights of the three support points are controlled to control orientation of the vehicle body. An amount of extension/retraction of the suspension servo actuation cylinders required to cause the in-vehicle stable platform to return to a horizontal level is calculated according to a measured pitch angle and a roll angle of the in-vehicle stable platform, and when a vehicle travels on an uneven road, the extension/retraction of each suspension servo actuation cylinder is controlled to cause the in-vehicle stable platform to be horizontal.

Akti̇f süspansi̇yon kullanan araç i̇çi̇ sabi̇t platform si̇stemi̇ ve kontrol yöntemi̇

Aktif süspansiyon kullanan bir araç içi sabit platform sistemi ve ilgili bir kontrol yöntemi sağlanmaktadır. Bahis konusu sistem bir araç gövdesi, bir araç içi sabit platform, bir atalet ölçüm cihazı, bir elektronik kontrol cihazı, bir servo kontrolör seti, birden fazla tekerlek ve süspansiyon servo tahrik silindirleri ve sırasıyla bu tekerleklere karşılık gelen deplasman sensörleri içermektedir. Bu tekerlekler, üç destek noktası teşkil eden üç gruba bölünmektedir. Üç destek noktalarının yükseklikleri araç gövdesinin oryantasyonunu kontrol etmek üzere kontrol edilmektedir. Araç içi sabit platformun yatay bir seviyeye geri dönmesini sağlamak üzere gerekli olan süspansiyon servo tahrik silindirlerinin uzatma/geri çekme miktarı araç içi sabit platformun ölçümlenen yunuslama açısına ve bir yatış açısına göre hesaplanmaktadır ve bir araç düz olmayan bir yol üzerinde hareket ettiği zaman, her bir süspansiyon servo tahrik silindirine ait uzatma/geri çekme işlemi araç içi sabit platformun yatay kalmasını sağlamak üzere kontrol edilmektedir.

Active-passive dual mode switchable vehicle suspension system and switching method therefor

Active-passive dual mode switchable vehicle suspension system and switching method therefor

An active-passive dual mode switchable vehicle suspension system. The system comprises a filter (1), a hydraulic pump (2), a check valve (3), a power takeoff (4), a servo valve (6), a suspension cylinder (7), a overflow valve (9), an energy accumulator (10), a reversing valve (11), a first pressure sensor (12), a second pressure sensor (13), a controller (14), a fuel tank (15) and a displacement sensor (16). Further related is a switching method for the active-passive dual mode switchable vehicle suspension system. When switching the mode, the fuel hydraulic pressure in the rodless cavity of the suspension cylinder is adjusted in advance to be equal to the fuel hydraulic pressure in the energy accumulator, a stable switching between active and passive suspension modes is thus achieved so as to eliminate oscillation of the vehicle body during the existing switching between active and passive suspension systems. Moreover, the energy accumulator and the overflow valve can be shared in active and passive suspension modes, thereby effectively decreasing the usage amount of energy accumulators and overflow valves, greatly saving the space of the vehicle body, effectively reducing the gross mass of the vehicle body and facilitating the light weight of the vehicle chassis.

Active-passive dual mode switchable vehicle suspension system and switching method therefor

An active-passive dual mode switchable vehicle suspension system. The system comprises a filter (1), a hydraulic pump (2), a check valve (3), a power takeoff (4), a servo valve (6), a suspension cylinder (7), a overflow valve (9), an energy accumulator (10), a reversing valve (11), a first pressure sensor (12), a second pressure sensor (13), a controller (14), a fuel tank (15) and a displacement sensor (16). Further related is a switching method for the active-passive dual mode switchable vehicle suspension system. When switching the mode, the fuel hydraulic pressure in the rodless cavity of the suspension cylinder is adjusted in advance to be equal to the fuel hydraulic pressure in the energy accumulator, a stable switching between active and passive suspension modes is thus achieved so as to eliminate oscillation of the vehicle body during the existing switching between active and passive suspension systems. Moreover, the energy accumulator and the overflow valve can be shared in active and passive suspension modes, thereby effectively decreasing the usage amount of energy accumulators and overflow valves, greatly saving the space of the vehicle body, effectively reducing the gross mass of the vehicle body and facilitating the light weight of the vehicle chassis.

Active-passive dual mode switchable vehicle suspension system and switching method therefor

An active-passive dual mode switchable vehicle suspension system is provided. The suspension system includes a filter, a hydraulic pump, a one-way valve, a power takeoff, a servo valve, a suspension cylinder, an overflow valve, an energy accumulator, a reversing valve, a first pressure sensor, a second pressure sensor, a controller, an oil tank and a displacement sensor. Further related is a switching method for the active-passive dual mode switchable vehicle suspension system. When the active and passive dual-mode switchable vehicle suspension system is switched between modes, an oil pressure in the rodless cavity of the suspension cylinder and an oil pressure in the energy accumulator are adjusted to be equal in advance, so that the stable switching of the active-passive suspension system can be realized, and the vibration of the vehicle body is eliminated when the existing active-passive suspension system is switched. Moreover, the accumulator and overflow valve can be shared in the active and passive suspension mode, thereby effectively reducing the use number of accumulators and overflow valves, greatly saving the layout space of the vehicle body, effectively reducing the total weight of the vehicle body, which is favorable to the lightweight of the vehicle chassis.

Active-passive dual mode switchable vehicle suspension system and switching method therefor

Akti̇f-pasi̇f çi̇ft mod geçi̇şli̇ araç süspansi̇yon si̇stemi̇ ve i̇lgi̇li̇ geçi̇ş yöntemi̇

Bir aktif-pasif çift mod geçişli araç süspansiyon sistemi sağlanmıştır. Süspansiyon sistemi bir hidrolik pompası, bir tek yollu valf, bir elektrik kesme tertibatı, bir servo valfi, bir süspansiyon silindiri, bir taşma valfi, bir enerji akümülatörü, bir ters valf, birinci basınç sensörü, ikinci basınç sensörü, bir kontrol elemanı, bir yağ deposu ve bir deplasman sensörü içerir. Mevcut tarifname ayrıca aktif-pasif çift mod geçişli araç süspansiyon sistemi kullanarak bir geçiş yöntemi ile ilgilidir. Aktif ve pasif çift mod geçişli araç süspansiyon sistemi modları arasında geçiş yapıldığında süspansiyon silindirinin rotsuz boşluğundaki yağ basıncı ile enerji akümülatöründeki yağ basıncı önceden eşit olacak şekilde ayarlanır, böylece aktif-pasif süspansiyon sisteminin stabil geçişi gerçekleştirilebilir ve mevcut aktif-pasif süspansiyon sistemi değiştirildiğinde cihaz gövdesinin vibrasyonu ortadan kalkar. İlaveten akümülatör ve taşma valfi aktif ve pasif süspansiyon modunda paylaştırılabilir, böylece akümülatörlerin ve taşma valflerinin kullanım sayısını etkili şekilde azaltır, araç gövdesinin düzen alanında büyük tasarruf sağlar, araç gövdesinin toplam ağırlığını azaltır ve bu da araç şasisinin hafifliği açısından avantajlıdır.

Planetary bevel gear automatic limited slip differential

A planetary bevel gear automatic limited slip differential includes five portions that are a main differential, a planetary bevel gear controller, a left drive axle shaft, a right drive axle shaft, and clutches. The planetary bevel gear controller includes an outer control unit and an inner control unit, the outer control unit includes four planetary bevel gears on an outer layer and a bevel gear fixed on a housing, and the inner control unit includes inner planetary bevel gears on an inner side and two bevel gears which have the same parameters and are meshed with the planetary bevel gears. The bevel gears are fixedly connected with outer rings of two overrunning clutches, respectively, and inner rings of the overrunning clutches and the right drive axle shaft are connected together by splines.

Active-passive dual mode switchable vehicle suspension system and switching method therefor

An active-passive dual mode switchable vehicle suspension system. The system comprises a filter (1), a hydraulic pump (2), a check valve (3), a power takeoff (4), a servo valve (6), a suspension cylinder (7), a overflow valve (9), an energy accumulator (10), a reversing valve (11), a first pressure sensor (12), a second pressure sensor (13), a controller (14), a fuel tank (15) and a displacement sensor (16). Further related is a switching method for the active-passive dual mode switchable vehicle suspension system. When switching the mode, the fuel hydraulic pressure in the rodless cavity of the suspension cylinder is adjusted in advance to be equal to the fuel hydraulic pressure in the energy accumulator, a stable switching between active and passive suspension modes is thus achieved so as to eliminate oscillation of the vehicle body during the existing switching between active and passive suspension systems. Moreover, the energy accumulator and the overflow valve can be shared in active and passive suspension modes, thereby effectively decreasing the usage amount of energy accumulators and overflow valves, greatly saving the space of the vehicle body, effectively reducing the gross mass of the vehicle body and facilitating the light weight of the vehicle chassis.