Method and device for power assist control

Abstract

The invention provides a power assist control method and a device, which are applied to a braking system, wherein the braking system comprises a power assist motor; the method comprises the followingsteps of: determining a current displacement difference of the power assist motor; Determining a target assisting force corresponding to the current displacement difference value according to the mapping relationship between the assisting force output by the assisting motor and the displacement difference; The booster motor is controlled to output the target booster. The power assist control method and device provided by the embodiment of the invention has good adaptability.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of automobile braking systems, and in particular, to a method and device for power assist control. Background technique [0002] As countries around the world vigorously promote the development of new energy vehicles, electric vehicles and fuel cell vehicles, as the main force of new energy vehicles, occupy an increasingly important position. Nowadays, most electric vehicles are transformed from traditional fuel vehicles. Vacuum boosters are used in the hydraulic braking system of traditional fuel vehicles to perform resistance braking. However, since new energy vehicles such as pure electric vehicles and fuel cell vehicles do not have a vacuum source, they cannot perform vacuum boosting. [0003] In the related art, an electric power-assisted braking system is provided, which includes: a pedal push rod, a booster motor, an action disc, a brake master cylinder, and brake fluid containe...

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a power assist control method and device to solve the problem of poor adaptability existing in the power assist control method in the related art

Images