An electric vehicle electronic mechanical brake gap self-adjusting control method

By using an electromechanical brake gap self-adjustment control method for electric vehicles, the problem of initial gap calibration difficulty is solved, and precise adaptive adjustment of the brake gap is achieved, thereby improving the response speed and safety of the braking system.

CN117774919BActive Publication Date: 2026-05-19HEFEI UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HEFEI UNIV OF TECH
Filing Date
2023-12-28
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

In existing technologies, initial braking clearance calibration is difficult, making it impossible to achieve adaptive clearance adjustment, which affects braking performance and safety.

Method used

A self-adjusting control method for electromechanical braking clearance of electric vehicles is designed, including a working stage conversion module, precise target position calculation and nonlinear feedforward PID controller. By obtaining the contact limit and separation limit positions, staged closed-loop control is achieved to adaptively adjust the braking clearance.

Benefits of technology

It achieves precise calibration and adaptive adjustment of the initial clearance of the electromechanical braking system, overcoming clearance changes caused by factors such as vibration and component aging, and ensuring braking response speed and safety.

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Abstract

The present application relates to a kind of electric vehicle electronic mechanical brake gap self-adjusting control method, compared with prior art, it solves the initial brake gap calibration difficulty, cannot realize the defect of gap self-adaptive regulation.The present application includes the following steps: the design of working phase conversion module;The calculation of accurate target position;The reconstruction of position closed-loop control system;Electronic mechanical brake gap self-adjusting control.The present application realizes the calibration of initial gap of electronic mechanical brake system by obtaining accurate position closed-loop reference value, realizes accurate gap compensation by obtaining contact limit position, separation limit position and gap adjustment position, and realizes self-adjusting control according to target gap.
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