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Anti-lock braking system as well as control method and control device thereof

A technology of anti-lock braking and control methods, which is applied in the direction of control devices, electric braking systems, braking control systems, etc., and can solve problems such as the accuracy of slow braking and difficult braking response speed

Active Publication Date: 2017-10-31
SAIC MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem solved by the embodiments of the present invention is: in emergency braking, the existing anti-lock braking system is difficult to brake with a slow response speed and low braking accuracy.

Method used

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  • Anti-lock braking system as well as control method and control device thereof
  • Anti-lock braking system as well as control method and control device thereof
  • Anti-lock braking system as well as control method and control device thereof

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Embodiment Construction

[0039] At present, in the emergency braking of electric vehicles, most of them use hydraulic ABS as the anti-lock braking system, but the hydraulic ABS braking response is slow, and the control accuracy is low, which cannot better meet the needs of users.

[0040] In view of the above problems, an embodiment of the present invention provides a control method for an anti-lock braking system. Since the slave brake controller includes a first slave brake controller and a second slave brake controller, the first slave brake controller controls the brake of the corresponding electromechanical brake according to the allocated total target brake torque. The second slave brake controller controls the braking torque of the corresponding in-wheel motor according to the allocated total target braking torque, wherein the electronic mechanical brake where the first slave brake controller is located The braking system has good stability and high braking strength, and the in-wheel motor brak...

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Abstract

The invention discloses an anti-lock braking system as well as a control method and a control device thereof. The method comprises the steps of controlling working states of wheel hub motors according to an SOC signal of a battery and wheel speed signals of various wheels, distributing total target braking torque of various wheels according to different working states of the wheel hub motors, transmitting the distributed total target braking torque of various wheels to corresponding slave braking controllers and controlling output torque of corresponding motors by the corresponding slave braking controllers according to the distributed total target braking torque, wherein each slave braking controller comprises a first slave braking controller and a second slave braking controller; each first slave braking controller controls the output torque of a corresponding electromechanical brake according to the distributed total target braking torque; each second slave braking controller controls the output torque of the corresponding wheel hub motor according to the distributed total target braking torque. By using the method, the response speed and the brake accuracy of the anti-lock braking system can be improved.

Description

technical field [0001] The invention relates to the field of vehicle control, in particular to an anti-lock braking system and its control method and device. Background technique [0002] The anti-lock brake system (ABS) is suitable for controlling the braking force of the brakes when the car is in emergency braking, so that the wheels are not locked and are in a state of rolling and sliding, so as to ensure that the wheels are in contact with the ground. The adhesion is the maximum value. [0003] At present, in emergency braking, the most widely used ABS is hydraulic ABS. Although hydraulic ABS can provide high braking torque, the braking response is slow and the control precision is low. Contents of the invention [0004] The problem solved by the embodiments of the present invention is: in emergency braking, it is difficult for the existing anti-lock braking system to have slow braking response speed and low braking accuracy. [0005] In order to solve the above pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L7/24B60L15/20B60T13/74
CPCB60L7/24B60L15/2009B60L2220/42B60L2220/44B60L2240/12B60L2240/14B60L2240/423B60L2240/465B60L2240/647B60T13/741B60T2270/10B60T2270/602Y02T10/72
Inventor 王斌方恩陆红丽刘广宇
Owner SAIC MOTOR
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