Method for operating electromechanical service brake of vehicle

By using parameters independent of the motor position sensor in the servo motor instead of the motor position signal, the problem of electromechanical driving brake deactivation in the event of a motor position sensor failure is solved, and the availability of the vehicle brake system and braking force generation in the case of a fault is realized.

CN119636663APending Publication Date: 2025-03-18ZF ACTIVE SAFETY GMBH
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Patent Information

Application Number
CN202411278582.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-09-15
Filing Date
2024-09-12
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

In the event of a motor position sensor failure, the electromechanical driving brake is often deactivated, resulting in a reduced availability of the vehicle brake system.

Method used

Feedback control of the servo motor is realized by using servo motor specific parameters independent of the motor position sensor in the servo motor, so that it can still operate in the event of a motor position sensor failure.

Benefits of technology

In the event of a motor position sensor failure, the electromechanical driving brake can still operate in emergency mode, ensuring the availability of the vehicle brake system and not requiring the complete deactivation of the relevant driving brake.

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Abstract

A method of operating an electromechanical service brake of a vehicle. Wherein the electromechanical service brake (12) has a servomotor (14), which moves a component of the service brake (12) in order to generate a braking force, and a motor position sensor (22), which records a displacement-specific position of the servomotor (14), records a malfunction of the motor position sensor (22), and detects the malfunction of the motor position sensor (22). And replacing the feedback control of the servomotor (14) by means of the motor position signal (SM) from the motor position sensor (22) by triggering the servomotor (14) on the basis of at least one servomotor-specific or vehicle-dynamic-specific parameter independent of the motor position sensor (22).
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