Control method of brake-by-wire system, readable storage medium, controller and vehicle

Abstract

The invention discloses a control method of a brake-by-wire system, a readable storage medium, a controller and a vehicle. The brake-by-wire system comprises a brake assembly, the brake assembly comprises a motor, a friction plate, a brake caliper, an outer piston and a brake disc, a rotation angle sensor is arranged corresponding to the motor, and the method comprises the steps that the brake caliper is controlled by the motor to push the outer piston to stretch out from the zero position, so that the brake disc is clamped by the friction plate; the number of rotation turns of the motor is obtained from the rotation angle sensor; according to the number of rotation turns, the push-out amount of the outer piston is obtained; when the push-out amount is larger than a preset push-out amount threshold value, alarm information is sent out, and friction plate abrasion alarm is carried out. According to the control method, the abrasion loss of the friction plate can be obtained without installing a hardware structure on the friction plate, the control method is simple and easy to implement and low in cost, and meanwhile the safety performance of the vehicle can be guaranteed by alarming when abrasion is serious.

Description

technical field [0001] The present application relates to the technical field of vehicles, and in particular, to a control method, a readable storage medium and a controller of a brake-by-wire system. Background technique [0002] With the rapid development of the vehicle industry, users have higher and higher requirements for the safety of vehicle braking. The friction pads of the electronic brake caliper of the vehicle braking system will wear during the braking process of the vehicle. When the friction pads are worn to the limit, it is necessary to Notify the user in time to replace the friction plate. [0003] In the related art, a mechanical alarm is usually set on the friction plate. When the friction plate is worn to the limit, the mechanical alarm on the friction plate contacts with the brake disc to produce abnormal noise, prompting the user to replace the friction plate. However, when the surrounding environment is noisy, the driver is not easy to notice in the ca...

AI Technical Summary

Problems solved by technology

However, when the surrounding environment is noisy, the driver is not easy to notice in the car, and the mechanical alarm will scratch the brake disc and cause wear and tear on the vehicle components.

In addition, an electronic alarm device is set on the friction plate. When the friction plate wears to the limit, the signal line of the electronic alarm device will be worn off, and the electronic alarm device will transmit the signal to the ECU (Electronic Control Unit, Electronic Control Unit) and prompt the user to replace it. This method is costly and has potential safety hazards

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