An electromechanical brake system clamping force multi-loop anti-interference control method

By employing a multi-closed-loop control method, combined with variable stiffness characteristic feedforward compensation, inverse sliding mode control, and current decoupling control, the robustness and accuracy issues of clamping force control in electromechanical braking systems are resolved, improving the response speed and stability of the braking system. This method is suitable for braking force control in intelligent vehicles.

CN120353163BActive Publication Date: 2026-05-15JILIN UNIVERSITY
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Patent Information

Application Number
CN202510418530.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-04-03
Publication Date
2026-05-15
Estimated Expiration
2045-04-03

AI Technical Summary

Technical Problem

Existing clamping force control methods for electromechanical braking systems fail to effectively consider the system's variable stiffness characteristics, frictional characteristics, and external disturbances, resulting in weak robustness and difficulty in achieving accurate clamping force control under external disturbances.

Method used

A multi-closed-loop control method is adopted, including clamping force loop, position loop and current loop. By designing variable stiffness characteristic feedforward compensation, inverse sliding mode control and current decoupling control, combined with friction model compensation, the control accuracy and robustness of the system are improved.

Benefits of technology

It achieves higher control precision, faster response speed and stronger robustness, improves the braking performance of electromechanical braking systems, and is suitable for high-precision braking force control of intelligent vehicles.

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Abstract

The application belongs to the technical field of automobiles, and particularly relates to a multi-closed-loop control method for clamping force of an electromechanical brake system considering nonlinear disturbance. The method comprises the following steps: step one, building an electromechanical brake actuator model; step two, designing a clamping force loop controller considering the variable stiffness characteristics of the system; step three, designing a position loop controller based on friction model compensation by using an inversion sliding mode control method; and step four, designing a current loop controller based on current decoupling, so as to finally realize multi-closed-loop control of the clamping force. The application has higher control precision, faster response speed and stronger robustness, can effectively improve the braking performance of the electromechanical brake system, and provides a feasible solution for high-precision control of braking force of an intelligent automobile.
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