Hybrid control system and method for vehicle-by-wire drive and mechanical brake

A mechanical brake and hybrid control technology, applied in the field of vehicle motion control, can solve problems such as complex parameters, switching fluctuations, instability, etc., and achieve the effects of low modification cost, convenient installation, and simple and reliable structure

Active Publication Date: 2022-06-28
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a typical multi-input-multi-output complex coupling dynamics, the traditional vehicle longitudinal motion control system has problems such as switching fluctuations, instability, and complex parameters caused by different independent control algorithms for driving / braking

Method used

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  • Hybrid control system and method for vehicle-by-wire drive and mechanical brake
  • Hybrid control system and method for vehicle-by-wire drive and mechanical brake

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Embodiment Construction

[0029] For a better understanding of the present invention, the invention will be described in detail below with reference to specific examples.

[0030] combine figure 1 As shown, the hybrid control system for vehicle drive-by-wire and mechanical braking in this embodiment includes a signal acquisition unit 10, a control unit 20 and a mechanical execution unit 30;

[0031] The signal acquisition unit 10 includes a desired vehicle speed input panel 11 for acquiring a desired vehicle speed, a brake signal detection module 12 for acquiring a braking signal, and an actual vehicle speed signal module 13 for acquiring an actual vehicle speed; the control unit 20 includes a motion controller 21 , a servo brake controller 22 and a VCU controller 23 ; the mechanical execution unit 30 includes a servo brake 31 , a master brake cylinder 32 and a drive motor 33 .

[0032] The expected vehicle speed input panel 11, the brake signal detection module 12 and the actual vehicle speed signal ...

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Abstract

The invention relates to the technical field of vehicle motion control, in particular to a hybrid control system and method for vehicle-by-wire drive and mechanical brake. A hybrid control method of drive-by-wire and mechanical braking for a vehicle. Firstly, the expected vehicle speed signal, the actual vehicle speed signal and the braking signal are collected; The generalized characterization value of the longitudinal driving / braking torque is required, and finally it is divided into the driving force control command and the distance value command driven by the servo brake. The VCU controller receives the driving force control command and controls the driving motor to provide driving force for the vehicle; The servo brake controller receives the distance value instruction driven by the servo brake, controls the servo brake to push the brake master cylinder, and the vehicle obtains braking force. The invention can coordinate the relationship between the drive-by-wire drive and the mechanical brake, and avoid the unsteady movement of the vehicle caused by the incoordination between the drive-by-wire drive and the mechanical brake.

Description

technical field [0001] The present invention relates to the technical field of vehicle motion control, in particular to a hybrid control system and method of a vehicle drive-by-wire and mechanical brake. Background technique [0002] Vehicle longitudinal motion control refers to adjusting the longitudinal motion state of the vehicle using a certain control strategy, so that the actual motion state of the controlled vehicle is as close to the desired motion state as possible. Vehicle longitudinal motion control is also an important part of current unmanned vehicle motion control. [0003] Traditional vehicle drive and braking are typically independently controlled by two different control algorithms. Release the brake when driving, and the driving control algorithm calculates the forward driving force that the driving motor needs to provide for the vehicle; when braking, disconnect the driving force, and the braking control algorithm calculates the current required braking f...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): B60W10/08B60W10/18B60W40/105B60W40/00
CPCB60W10/08B60W10/18B60W40/105B60W40/00
Inventor胡杰陈瑞楠徐文才鲁若宇朱令磊张敏超钟鑫凯
OwnerWUHAN UNIV OF TECH