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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 16. Отображено 16.
08-08-2023 дата публикации

Dual-vector current prediction control method and system for single-phase NPC three-level inverter

Номер: CN116566231A
Автор: YUAN LEI, CAI YUHUA, XU ANFEI, MEI JIAWEI, WANG PAN, WANG HANG, YUAN KAI, XU HU
Принадлежит:

The invention discloses a single-phase NPC three-level inverter double-vector current prediction control method and system. The method comprises the steps that a dynamic constraint equation of output current is obtained based on inverter topological structure analysis; discretizing the output current variable to obtain the output current at the next moment; designing a switch sequence, and constructing a cost function based on the output current at the next moment; constructing a cost function set, and traversing and optimizing the cost function set to obtain a dominant vector and a redundant vector respectively corresponding to the optimal solution and the suboptimal solution; and calculating action time of a dominant vector and a redundant vector corresponding to the optimal solution and the suboptimal solution, generating a plurality of PWM pulses according to the action time of the switch sequence, the dominant vector and the redundant vector, and respectively driving a plurality of ...

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Номер записи: 1
16-12-2009 дата публикации

Automatic control system for blast furnace feeding

Номер: CN0101604146A
Автор: LIDE YE, JING ZHAO, WEIDONG ZHOU, DENGKE ZHOU, ANFEI XU, CHENGJIE ZHANG, YE LIDE, ZHAO JING, ZHOU WEIDONG, ZHOU DENGKE, XU ANFEI, ZHANG CHENGJIE
Принадлежит:

The invention relates to an automatic control system for blast furnace feeding, which sends a control instruction to blast furnace feeding equipment through a cache data area of an external I/O port thereof and receives the state feedback of the blast furnace feeding equipment. The system is characterized in that the system is also connected with an automatic control simulation system for blast furnace feeding through an external data exchange storage area thereof and sends a control instruction to the automatic control simulation system for blast furnace feeding, and the automatic control simulation system for blast furnace feeding simulates a state feedback signal which is under the control instruction and comprises the operation state of the blast furnace feeding equipment and the state of movement position of materials, and feeds back the state feedback signal to the automatic control system for blast furnace feeding. The automatic control system for blast furnace feeding can completely ...

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Номер записи: 2
04-05-2011 дата публикации

Control method of automatic control system for blast furnace feeding

Номер: CN0101604146B
Автор: YE LIDE, ZHAO JING, ZHOU WEIDONG, ZHOU DENGKE, XU ANFEI, ZHANG CHENGJIE, LIDE YE, JING ZHAO, WEIDONG ZHOU, DENGKE ZHOU, ANFEI XU, CHENGJIE ZHANG
Принадлежит:

The invention relates to a control method of an automatic control system for blast furnace feeding, the system sends a control instruction to blast furnace feeding equipment through a cache data area of an external I/O port thereof and receives the state feedback of the blast furnace feeding equipment. The system is characterized in that the system is also connected with an automatic control simulation system for blast furnace feeding through an external data exchange storage area thereof and sends a control instruction to the automatic control simulation system for blast furnace feeding, and the automatic control simulation system for blast furnace feeding simulates a state feedback signal which is under the control instruction and comprises the operation state of the blast furnace feeding equipment and the state of movement position of materials, and feeds back the state feedback signal to the automatic control system for blast furnace feeding. The automatic control system for blast furnace ...

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Номер записи: 3
23-06-2023 дата публикации

Global resonance suppression method and system of LCL type inverter multi-machine parallel system

Номер: CN116316625A
Автор: JIANG YUNHAO, LI RUOXUAN, HOU TIANHAO, CAI ZISHUO, XU ANFEI, YUAN LEI, WANG HANG
Принадлежит:

The invention relates to a global resonance suppression method and system for an LCL type inverter multi-machine parallel system, and the method comprises the steps: S1, obtaining an inverter multi-machine parallel system equivalent model through a single-inverter system equivalent model, and obtaining the resonance characteristics of a multi-inverter parallel system; s2, based on a QPR controller, forming double-loop control which takes a capacitance current proportion as a current inner loop and takes grid-side current feedback as a current outer loop; s3, adding optimization control of a power grid voltage feed-forward series lead compensation link on the basis of the step 2, and suppressing harmonic resonance caused by a low-frequency disturbance component of the power grid voltage; and S4, PCC point high-frequency component feedback compensation is introduced on the basis of the step 3, a virtual admittance coefficient can be set and adjusted according to the size of the power grid ...

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Номер записи: 4
07-04-2023 дата публикации

Double-ring electromagnetic magneto-optical hybrid current transformer

Номер: CN115932364A
Автор: WANG HANG, CHI NAZE, XU ZHUOLI, LIU FUYUAN, CAO MUYAN, DING WENFANG, LIAO YANQUN, YUAN LEI, JIANG YUNHAO, XU ANFEI, YANG LEZHI
Принадлежит:

The invention belongs to the technical field of current measurement, and discloses a double-ring electromagnetic magneto-optical hybrid current transformer, which comprises an electromagnetic current transformer and a photoelectric mutual inductance unit, and is characterized in that the photoelectric mutual inductance unit comprises a first photoelectric current transformer and a second photoelectric current transformer; a test cable penetrates through the center of an annular iron core of the electromagnetic current transformer, and two probes corresponding to the two photoelectric current transformers are installed on the annular iron core and symmetrically arranged on the two sides of the test cable in parallel. The electromagnetic current transformer is used for measuring and obtaining steady-state current information of the test cable, and the photoelectric mutual inductance unit is used for measuring and obtaining transient-state current information of the test cable. According to ...

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Номер записи: 5
19-03-2014 дата публикации

Method for controlling temperature of slag flushing water at cooling tower outlet in blast furnace slag treating system

Номер: CN103642958A
Автор: ZHAO HAOYI, XU HAIZHEN, QIU XIJIAN, REN ZIHONG, ZHOU WEIDONG, XU ANFEI, WU CHEN, XIE XIANGPENG
Принадлежит:

The invention provides a method for controlling temperature of slag flushing water at a cooling tower outlet in a blast furnace slag treating system, comprising: (S1) setting system parameters of the slag flushing water temperature; (S2) real-time acquiring each signal parameter of a blast furnace cooling tower; (S3) based on each parameter obtained by system parameter arrangement and signal real time acquisition, by regulating a rotation speed of a cooling tower blower fan, controlling the temperature of the slag flushing water at the cooling tower outlet; (S4) changing the cooling tower blower fan from an operation state to a stop state; and (S5) returning to the step S1, and carrying out temperature control of the slag flushing water in a next production period. The method can accurately, rapidly and automatically control the temperature of the slag flushing water at the cooling tower outlet, raises control precision, rapidity and automation level, and creates conditions for stable high ...

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Номер записи: 6
14-07-2010 дата публикации

Fault diagnosis and processing method under blast furnace trough

Номер: CN0101775448A
Автор: ZHIHUI MA, ANFEI XU, CHIHUA ZHOU, MA ZHIHUI, XU ANFEI, ZHOU CHIHUA
Принадлежит:

The invention provides a fault diagnosis and processing method under a blast furnace trough, which is realized by a fault diagnosis and processing program set up on a fault response PC machine, wherein the fault diagnosis and processing program comprises an optical proximity correction (OPC) client, a background database, a fault processing program and an operation interface. An OPC client exchanges data with an OPC server to synchronize and update programmable logic controller (PLC) real-time data; the background database keeps in communication with the fault processing program and provides fault cases and processing methods thereof for the fault processing program; the fault processing program analyzes collected data so as to determine fault contents and is combined with the background database to provide a processing method; and the operation interface provides a fault list, working mode selection and a dialog box. In the invention, only one fault response PC machine is additionally ...

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Номер записи: 7
30-06-2010 дата публикации

Blast furnace continuous feeding control way

Номер: CN0101763061A
Автор: XU ANFEI, YE LIDE, ZHAO JING, ZHOU DENGKE, ANFEI XU, LIDE YE, JING ZHAO, DENGKE ZHOU
Принадлежит:

The invention provides a control way capable of feeding continuously according to any appointed order, for resolving the problems that the original blast furnace feeding system requires the mineral material in a same batch to be connected front and back on a leather belt, and a gap can not exist to affect the productive efficiency, and overlapping can not exist to overlap the mineral material on the leather belt to be scattered; and the displaying order of different minerals in the same batch has diversity affected by various production factors. In the invention, a virtual scale hopper control mould, a scale hopper discharging time calculating mould and a scale hopper discharging mould are arranged in a blast furnace PLC system, for setting up a mapping between the scale hopper moulds controlled by a real scale hopper and the virtual scale hopper mould. The invention ensures the feeding speed and the production efficiency of the blast furnace, and simultaneously provides abundant method ...

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Номер записи: 8
28-04-2023 дата публикации

Multi-amplification-channel active common-mode interference filter and control method thereof

Номер: CN116032247A
Автор: JIANG YUNHAO, ZHOU GAOYI, CAI ZISHUO, HOU TIANHAO, SONG YIMING, YUAN LEI, XU ANFEI, XIAO JIXIONG, WANG HANG, YANG SHUAI
Принадлежит:

The invention relates to the field of electromagnetic compatibility, in particular to a multi-amplification-channel active common-mode interference filter and a control method thereof, and the multi-amplification-channel active common-mode interference filter comprises a main circuit, a common-mode voltage detection network module, a multi-channel reverse amplification network module and a compensation current injection module, according to the invention, a multi-amplification channel voltage detection current compensation active electromagnetic interference filter is adopted to solve the problem of poor interference suppression effect caused by fixed unity gain bandwidth of an operational amplifier when a single-amplification channel AEF is used. The multiple amplification channels can enable a reverse amplification network in the VSCC-AEF structure to work under different reverse amplification conditions, and enable an operational amplifier in the reverse amplification network to maintain ...

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Номер записи: 9
24-11-2010 дата публикации

Method for diagnosing and processing faults below blast furnace groove

Номер: CN0101892335A
Автор: ANFEI XU, ZHIHUI MA, CHIHUA ZHOU, XU ANFEI, MA ZHIHUI, ZHOU CHIHUA
Принадлежит:

The invention provides a method for diagnosing and processing faults below a blast furnace groove. The method is realized by a fault diagnosis and processing program installed on a fault response PC. The fault diagnosis and processing program comprises an OPC (OLE for Process Control) client, a background database, a fault processing program and an operating interface, wherein the OPC client and an OPC server interact data for synchronizing and updating PLC (Programmable Logic Controller) real-time data; the background database is communicated with the fault processing program and provides a fault case and a processing method therefor; the fault processing program analyzes the collected data to determine the fault content and provides the processing method in combination with the background database; and the operating interface provides a fault list, a working mode selection and a dialog box. In the invention, only one fault response PC machine is necessarily added based on the original ...

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Номер записи: 10
24-12-2008 дата публикации

Data transfer control method between blast furnace feeding system and blast furnace cloth system

Номер: CN0101329566A
Автор: YE LIDE, ZHAO JING, ZHOU WEIDONG, CHEN SHENYU, XU ANFEI, ZHOU DENGKE, ZHANG CHENGJIE, LIDE YE, JING ZHAO, WEIDONG ZHOU, SHENYU CHEN, ANFEI XU, DENGKE ZHOU, CHENGJIE ZHANG
Принадлежит:

The invention provides a data transmission control method between a blast furnace feeding system and a blast furnace distributing system aiming at the problems exist in the matching process of blending parameters of the feeding system and the distributing parameters of the distributing system of the blast furnace; the technical proposal is that the blast furnace feeding PLC stores and circularly reads the blending parameters and the distributing parameters by associating the blending parameters and the distributing diameters, feeding and blending are carried out according to the blending parameters; when coke charge/mine charge of a certain batch enters the body of the blast furnace, the blast furnace feeding PLC transmits the distributing parameters to the blast furnace distributing PLC which carries out distribution according to the received distributing parameters. By adopting the technical proposal of the invention, not only the relative independence of the control process of the feeding ...

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Номер записи: 11
23-05-2012 дата публикации

Method for automatically correcting differential-pressure compensation factors of weighing of top charging bucket

Номер: CN0101985669B
Автор: ZHANG CHENGJIE, WU CHEN, XU ANFEI, ZHAO JING, HUANG YING, CHENGJIE ZHANG, CHEN WU, ANFEI XU, JING ZHAO, YING HUANG
Принадлежит:

The invention relates to the technical field of bell-less top blast furnace, in particular to a method for automatically correcting the differential-pressure compensation factors of weighing of a top charging bucket. The invention comprises the following steps: determining the differential-pressure compensation factors of weighing in an ideal state; monitoring D-values between actual weight values and the weight values subjected to compensation so as to determine compensation values of weighing; correcting the compensation values according to the D-values of weighing, wherein the monitored data comprise the pressure and weight of a charging bucket, the pressure in a blast furnace, and the data obtained by the weighting measurement of the blast furnace; and carrying out periodical correction on the differential-pressure compensation factors of weighing based on differential values through comparing the weights of the charging bucket before and after pressurizing and the data obtained by ...

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Номер записи: 12
09-06-2010 дата публикации

Data transfer control method between blast furnace feeding system and blast furnace cloth system

Номер: CN0101329566B
Автор: YE LIDE, ZHOU WEIDONG, XU ANFEI, ZHOU DENGKE, ZHAO JING, ZHANG CHENGJIE, CHEN SHENYU, LIDE YE, WEIDONG ZHOU, ANFEI XU, DENGKE ZHOU, JING ZHAO, CHENGJIE ZHANG, SHENYU CHEN
Принадлежит:

The invention provides a data transmission control method between a blast furnace feeding system and a blast furnace distributing system aiming at the problems exist in the matching process of blending parameters of the feeding system and the distributing parameters of the distributing system of the blast furnace; the technical proposal is that the blast furnace feeding PLC stores and circularly reads the blending parameters and the distributing parameters by associating the blending parameters and the distributing diameters, feeding and blending are carried out according to the blending parameters; when coke charge/mine charge of a certain batch enters the body of the blast furnace, the blast furnace feeding PLC transmits the distributing parameters to the blast furnace distributing PLC which carries out distribution according to the received distributing parameters. By adopting the technical proposal of the invention, not only the relative independence of the control process of the feeding ...

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Номер записи: 13
15-06-2011 дата публикации

Bell-less string tank furnace top charging material software tracker and control method thereof

Номер: CN0102096404A
Автор: CHEN WU, ANFEI XU, CHENGJIE ZHANG, WU CHEN, XU ANFEI, ZHANG CHENGJIE
Принадлежит:

The invention discloses a bell-less string tank furnace top charging material software tracker and a control method thereof. The software tracker comprises a time detection module used for detecting the start and stop time of all process flows of a bell-less string tank furnace top for confirming the time lengths of all the process flows, a parameter setting module used for setting the reference time of all the process flows, a time comparison module used for comparing the actual time lengths of all the process flows with the set reference time, an alarm module used for sending out an alarm signal when the actual time lengths of all the process flows exceed the set reference time, and an equipment optimizing module used for optimizing equipment of a bell-less string tank furnace top system after the alarm signal is sent out by the alarm module so as to lead the time lengths of all the process flows to be controlled within the set reference time. The invention realizes the effect of monitoring ...

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Номер записи: 14
09-02-2011 дата публикации

Communication control method between blast furnace under-tank feeding system and furnace roof distribution system

Номер: CN0101968637A
Автор: ANFEI XU, CHENGJIE ZHANG, CHEN WU, JING ZHAO, DENGKE ZHOU, XU ANFEI, ZHANG CHENGJIE, WU CHEN, ZHAO JING, ZHOU DENGKE
Принадлежит:

The invention relates to the technical field of communication between blast furnace under-tank feed and furnace roof distribution, in particular to a communication control method between a blast furnace under-tank feeding system and a furnace roof distribution system. The method comprises the following steps of: when the material head of a certain batch of material reaches a data transmitting and checking point and the material tail already crosses a material head-tail distance control point, sending data by the under-tank feeding system; delaying the time for about 3 seconds, then checking whether storage data in a register are empty by the furnace roof system, if so, sending a signal to a PLC (programmable logic controller) of the under-tank system to require for resending the data; when the material head of a certain batch of material reaches the data transmitting and checking point and the material tail does not cross the material head-tail distance control point, sending data by the ...

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Номер записи: 15
16-03-2011 дата публикации

Method for automatically correcting differential-pressure compensation factors of weighing of top charging bucket

Номер: CN0101985669A
Автор: CHENGJIE ZHANG, CHEN WU, ANFEI XU, JING ZHAO, YING HUANG, ZHANG CHENGJIE, WU CHEN, XU ANFEI, ZHAO JING, HUANG YING
Принадлежит:

The invention relates to the technical field of bell-less top blast furnace, in particular to a method for automatically correcting the differential-pressure compensation factors of weighing of a top charging bucket. The invention comprises the following steps: determining the differential-pressure compensation factors of weighing in an ideal state; monitoring D-values between actual weight values and the weight values subjected to compensation so as to determine compensation values of weighing; correcting the compensation values according to the D-values of weighing, wherein the monitored data comprise the pressure and weight of a charging bucket, the pressure in a blast furnace, and the data obtained by the weighting measurement of the blast furnace; and carrying out periodical correction on the differential-pressure compensation factors of weighing based on differential values through comparing the weights of the charging bucket before and after pressurizing and the data obtained by ...

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Номер записи: 16