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Fault-tolerant control system based on line control brake

A technology of fault-tolerant control and brake-by-wire, which is applied in the direction of braking safety system, etc., can solve the problems of loss of vehicle safety and reliability, complex working environment of braking system, etc., so as to improve safety and reliability and realize fault tolerance The effect of the function

Inactive Publication Date: 2011-08-31
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the process of realizing the present invention, the inventor found that the prior art has the following defects: in the brake-by-wire system, the control chip ECU is used for control. Since the working environment of the brake system is complicated, once the ECU breaks down, the ECU cannot control the vehicle. Braking, the safety and reliability of the vehicle are lost

Method used

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  • Fault-tolerant control system based on line control brake
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  • Fault-tolerant control system based on line control brake

Examples

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Embodiment Construction

[0019] The present invention will be described in detail below according to the accompanying drawings, which is a preferred embodiment among various implementations of the present invention.

[0020] refer to figure 1 , 2. This embodiment proposes a fault-tolerant control system, the system includes a master MCU, a slave MCU and a relay, and the relay is connected to the master MCU and the slave MCU respectively. The normally closed contact of the relay is connected with the master MCU, and the normally open contact of the relay is connected with the slave MCU. At this point, the master MCU is in a working state, and the slave MCU is in a dormant state. The system also includes a detection module connected to the main MCU for detecting whether the main MCU fails. The detection module is a watchdog circuit.

[0021] The system also includes a processing module, the processing module is connected to the relay and the detection module, and is used to control the normally close...

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PUM

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Abstract

The invention relates to a fault-tolerant control system which comprises a main MCU (Microprogrammed Control Unit), a slave MCU and a switching control device, wherein the main MCU is connected with the switching control device, the slave MCU is connected with the switching control device, and the switching control device is used for switching a power supply between the main MCU and the slave MCU when the main MCU has a fault. When the main MCU has a fault, the power supply is switched to the slave MCU, and the slave MCU is used for controlling a vehicle brake system, therefore, the fault-tolerant function of a linear control brake system is realized and the safety, and the reliability of vehicles are improved.

Description

technical field [0001] The present invention relates to the technical field of brake-by-wire, in particular to a fault-tolerant control system based on brake-by-wire Background technique [0002] The traditional brake system has long brake pipelines, complex mechanical structures, and a wide variety of valves, especially for vehicles with long wheelbases or trailers, which have a long brake transmission line, which often occurs during braking. Braking hysteresis such as sluggish response reduces the safety performance of the vehicle, and the cost of the braking system is relatively high. [0003] With the improvement of the requirements for vehicle braking performance, the Brake-By-Wire system (Brake-By-Wire) is formed by combining the control-by-wire technology and the braking system. For braking, the specific EMB system uses electric motor drive to replace the traditional hydraulic drive or compressed air drive part, and the EMB system is controlled by the electronic cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T17/18
Inventor 杜金枝王陆林高国兴
Owner CHERY AUTOMOBILE CO LTD
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