Redundant electronic steering braking system

An electronic steering and braking system technology, applied in the direction of electric steering mechanism, etc., can solve the problems of personal property loss, lack of system-level redundant functions, simple structure, etc., and achieve the effect of fast response

Active Publication Date: 2019-05-10
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing braking system has a simple structure and does not have system-level redundant functions. During the automatic driving process, if the braking system fails, the automatic driving vehicle will lose the braking function, which will cause major personal and property losses.

Method used

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  • Redundant electronic steering braking system
  • Redundant electronic steering braking system
  • Redundant electronic steering braking system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Such as figure 1 with Figure 4 As shown, the redundant electronic steering braking system of the present invention includes two electronic power steering units (namely electronic power steering unit X3 and electronic power steering unit Y1), master braking unit 7, slave braking unit 5 and Central controller9. Among them, the central controller 9 is used for computing and decision-making automatic driving functions on the vehicle.

[0046] Two electronic power steering units (that is, EPS systems) are used to jointly control the steering of the vehicle; wherein, each of the electronic power steering units (that is, EPS) includes a processor, and a corner torque sensor and a motor that are respectively connected to the processor . Wherein, the rotation angle torque sensor is used to output the actual torque signal and angle signal of the current steering wheel, and send them to the processor connected thereto. The processor is used to obtain the current desired steer...

Embodiment 2

[0074] Such as figure 1 As shown, the redundant electronic steering brake system also realizes the redundancy of the vehicle bus. The vehicle bus includes a first vehicle bus 11 and a second vehicle bus 4; the first vehicle bus 11 is used to transmit feedback of control commands and status signals; the first vehicle bus 11 is also used to transmit current expected steering wheel angle signals. The second vehicle bus 4 is used to transmit the feedback of the control command and status signal synchronously with the first vehicle bus 11 , and the second vehicle bus 4 is also used to transmit the current expected steering wheel angle signal.

[0075] Both electronic power steering units, the master brake unit 7 and the slave brake unit 5 are connected to the first vehicle bus 11 .

[0076] Both electronic power steering units, the master brake unit 7 and the slave brake unit 5 are also connected to the second vehicle bus 4 .

[0077] Such as Image 6 As shown, when one of the v...

Embodiment 3

[0086] Such as figure 1 As shown, the redundant electronic steering braking system also includes a safety controller 8, which realizes the redundancy of the controller.

[0087] The central controller 9 is connected with the first automobile bus 11 and the second automobile bus 4 respectively, and the central controller 9 is used for calculating the steering wheel angle signal of the current expectation, and for sending control instructions and monitoring the master brake unit 7 and the slave brake unit 7. The working state of the driving unit 5, and the current desired steering wheel angle signal and control instructions are sent to the first vehicle bus 11 and the second vehicle bus 4 respectively.

[0088] Safety controller 8 is connected with the first automobile bus 11 and the second automobile bus 4 respectively; This safety controller 8 is used for calculating the steering wheel angle signal of current expectation, when monitoring that central controller 9 is not ineffe...

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PUM

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Abstract

The invention discloses a redundant electronic steering braking system which comprises two electronic power-assisted steering units, a main braking unit and a slave braking unit. The two electronic power-assisted steering units are used for jointly controlling an automobile to steer. The main braking unit is used for receiving a control command from an automobile bus, calculating the control command and executing result output. The slave braking unit is used for receiving the control command from the automobile bus, calculating the control command and deciding whether result output is executedor not on the basis of a state signal of the main braking unit. The redundant electronic steering braking system can meet the requirement for automatic driving safety.

Description

technical field [0001] The invention belongs to the technical field of automobile automatic driving, and in particular relates to a redundant electronic steering braking system. Background technique [0002] With the advancement of modern technology and the development of science and technology, people have higher and higher requirements for vehicles. On the basis of satisfying traditional driving, they also need to be able to realize intelligent control of vehicles, such as driverless cars, adaptive cruise, and vehicle active safety. , automatic parking and other functions. Among them, the electric power steering control system and braking system are important parts of intelligent control, and their reliability and safety are particularly important. [0003] The existing electric power steering control system (EPS) is composed of a corner torque sensor, a vehicle speed sensor, a control unit processor, and a power assist motor. Its basic working principle is: the steering...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04
CPCY02T10/72
Inventor 王建强丁可孔周维周增碧
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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