Brake-by-wire system, control method, storage medium and terminal

Abstract

The invention discloses a brake-by-wire system, a control method, a storage medium and a terminal. The brake-by-wire system comprises a first pressure cylinder and a second pressure cylinder; the first pressure cylinder is arranged between a first isolating valve and a third isolating valve, a first cavity of the first pressure cylinder is communicated with an output loop of the third isolating valve, a second cavity of the first pressure cylinder is communicated with an input loop of the first isolating valve, and the first pressure cylinder is set to increase the brake pressure of the first cavity of the brake master cylinder when entering a mechanical backup state; and a second cavity of the second pressure cylinder communicates with an input loop of the second isolation valve, and the second pressure cylinder is arranged to increase the brake pressure of the second cavity of the brake master cylinder when entering the mechanical backup state, so that the pedal stroke is increased, and the pedal force is reduced. The brake pedal stroke during mechanical backup braking is increased, and the panic that a driver cannot step down a pedal due to the fact that the pedal stroke is shortened under the emergency condition is avoided.

Description

technical field [0001] The invention relates to the technical field of vehicle brake-by-wire, in particular to a brake-by-wire system, a control method, a storage medium and a terminal. Background technique [0002] see figure 1 , in the traditional technology, when the brake-by-wire system encounters a serious electrical failure, it will enter a purely mechanical backup state. At this time, the simulator control valve closes and cuts off the first chamber of the brake master cylinder and the pedal simulator cylinder, and at the same time isolates the valve 3. Isolation valve 4 is opened, isolation valve 1 and isolation valve 2 are closed, so that the first cavity of the brake master cylinder communicates with brake wheel cylinder 1 and brake wheel cylinder 3, and the second cavity of the brake master cylinder communicates with the brake wheel cylinder 2. The brake wheel cylinders 4 are connected. At this time, the brake pressure cannot be directly provided by the wire cont...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a brake-by-wire system, control method, storage medium and terminal. By improving the brake-by-wire hydraulic circuit system, the pedal feel of the driver can be simulated, and the pedal stroke can be significantly shortened when the mechanical backup working condition is solved. Give the driver the technical problem of subjective feeling that the foot feels hard and difficult to step on

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