Pedal feel emulation device and method with active redundancy and variable feel functionality

By designing a pedal feel simulation device with active redundancy and variable sensing capabilities, and utilizing an air control system and solenoid valve control, various pedal feel simulations and rapid braking response in a disabled state are achieved, thus solving the safety deficiencies of existing pedal feel simulators.

CN117022214BActive Publication Date: 2026-06-02WUHAN UNIV OF TECH
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Patent Information

Application Number
CN202311097716.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-08-29
Publication Date
2026-06-02
Estimated Expiration
2043-08-29

AI Technical Summary

Technical Problem

Existing pedal feel simulators cannot simulate various pedal feel scenarios based on actual conditions, and their safety is insufficient in the event of disability, especially when the active power source fails, resulting in slow braking response.

Method used

Design a pedal feel simulation device with active redundancy and variable feel function. It adopts an air control system and a brake master cylinder assembly, which includes coaxial rear chamber, left chamber and right chamber. It uses a rubber force feedback disc and air spring to simulate pedal feel, and automatically eliminates gaps in the disabled state through multiple solenoid valves. It provides dual power sources to improve safety.

Benefits of technology

It achieves pedal feel simulation in multiple pedal modes, improves braking response speed in the event of power failure, and has dual safety redundancy function to ensure safety and response speed when the power source fails.

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Abstract

The application discloses a pedal feeling simulation device and method with active redundancy and variable pedal feeling, and the pedal push rod provided with front and rear shaft shoulders penetrates the rear cavity, left cavity and right cavity in sequence; the air pressure sensor, displacement sensor and air compressor are connected with the ECU signal, the right cavity is in cut-off communication with the air compressor and / or air cylinder through valve control, and the air compressor is in communication with the high-pressure air cylinder through valve control; the air pressure sensor is arranged to collect the pressure of the right cavity and air spring, and the displacement sensor is arranged to collect the displacement of the front end of the pedal push rod; the electric power booster and brake master cylinder are connected with the force feedback disc; and the force feedback disc and the front end of the pedal push rod are provided with a set gap. The double-energy guarantee system is safe in failure. The differential pressure control of the right cavity and air spring is used to realize the free conversion function of variable pedal feeling. Meanwhile, the brake response speed in the failure working mode can be improved.
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