A method for controlling the clamping force of a vehicle electromagnetic mechanical brake device

By using an electromagnetic piston to drive the brake pads to quickly contact the brake disc, the problem of slow speed and high noise in the gap elimination and release phases of electromechanical braking devices is solved, thereby improving the braking response speed and reducing noise, ensuring the high efficiency, quietness and precise control of the braking system.

CN120986366BActive Publication Date: 2026-01-27WANXIANGQIANCHAO CO LTD
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Patent Information

Application Number
CN202511538552.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-10-27
Publication Date
2026-01-27
Estimated Expiration
2045-10-27

AI Technical Summary

Technical Problem

Existing electromechanical braking devices are slow and generate excessive noise during the gap elimination and release phases, and the mechanical transmission links have response delays and low control precision.

Method used

The control drive module receives braking force commands, calculates the target rotation angle of the output shaft, and uses the electromagnetic force generated by the first and second electromagnetic pistons to drive the brake pads to quickly contact the brake disc, thereby actively eliminating the braking gap and avoiding noise and vibration caused by mechanical transmission. Combined with the electromagnetic attraction of the electromagnetic piston and the driving force of the rotating shaft, the brake clamping is achieved.

Benefits of technology

It significantly reduces mechanical noise during braking, improves response speed and control precision, ensures rapid and quiet braking response, and balances the reliability and safety of the braking system.

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Abstract

The application discloses a clamping force control method of a vehicle electromagnetic mechanical brake device and belongs to the technical field of vehicle braking. The control method comprises the following steps: comparing a target rotation angle with a maximum limit rotation angle of a rotating shaft under the restriction of a thrust ring, and adjusting a motor to perform a release action or a clamping action; and when the current rotation angle of an output shaft is equal to the target rotation angle, the output shaft of the motor stops rotating, and the first electromagnetic piston and the second electromagnetic piston are powered off. In the clamping process, the electromagnetic attraction force generated after the first electromagnetic piston and the second electromagnetic piston are powered on is preferentially utilized to drive the brake pad to rapidly contact the brake disc, active pre-tightening elimination of the brake gap is realized without mechanical transmission, meshing noise and vibration generated by high-speed rotation of motor-driven ball screws, gears and other components are avoided, mechanical noise in the braking process is significantly reduced, and response speed and control accuracy are improved.
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