Master cylinder pressure estimation and control method and device and computer storage medium

A master cylinder pressure and control method technology, applied in the direction of brakes, etc., can solve the problems of final deceleration difference, vehicle pedal feeling inconsistency, etc., to achieve the final deceleration consistent, improve the effect of sensory performance and consistency
CN112660089AActive Publication Date: 2021-04-16拿森汽车科技(杭州)有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
拿森汽车科技(杭州)有限公司
Publication Date
2021-04-16

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Abstract

The invention provides a main cylinder pressure estimation and control method and device and a computer storage medium. The main cylinder pressure estimation method comprises: obtaining feedforward control pressure according to expected pressure of a driver; acquiring a vehicle deceleration braking force and a wheel deceleration braking force; obtaining model main cylinder pressure according to the feedforward control pressure, the vehicle deceleration braking force, the wheel deceleration braking force and a conversion coefficient between the braking pressure and the friction force; and adjusting the main cylinder pressure of the brake according to the model main cylinder pressure. The main cylinder pressure of the brake is estimated on the basis of information such as the vehicle speed and the wheel speed of the whole vehicle, then closed-loop control is conducted according to the estimated main cylinder pressure and the expected pressure of a driver, and the inductive performance and consistency of the brake pedal are improved.
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Description

technical field

[0001] The invention relates to the technical field of automobiles, in particular to a master cylinder pressure estimation and control method and device, and a computer storage medium. Background technique

[0002] As consumers have higher and higher requirements for the comfort and safety of automobiles, more electromechanical products have appeared in the field of automobile braking, and electronic booster solutions are becoming mainstream designs. Compared with the traditional vacuum booster, it has a huge natural advantage in terms of boosting ability and ensuring vehicle braking safety.

[0003] The brakes in the vehicle's basic braking system include brake master cylinders, brake lines, brake calipers, and brake friction plates. During the mass production of vehicles, the above parts have manufacturing dispersion and poor consistency. Generally speaking, the relationship between the stroke of the master cylinder and the pressure of the master cylinder...

Claims

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