Method and device for slope parking of electric vehicle

Abstract

The invention discloses a method and device for slope parking of an electric vehicle. The method comprises the steps that a torque instruction value which is recently acquired by a vehicle control unit and is not equal to zero is latched; under the condition that the vehicle control unit does not acquire an accelerator signal and does not acquire a brake signal, whether the slope slip phenomenon of the vehicle happens or not is judged, if the slope slip phenomenon of the vehicle happens, the torque instruction value which is latched in advance is multiplied by a certain coefficient to obtain a value, then the value is assigned to a rotating speed closed-loop integration variable to serve as an initial value of the rotating speed closed-loop integration variable, rotating speed closed-loop control is started according to the initial value, a slope parking function can be fulfilled, and rapid slope parking is achieved.

Description

technical field [0001] The invention relates to the technical field of automatic control, and more specifically, to a method and device for parking an electric vehicle on a slope. Background technique [0002] When the car is parked on a slope, due to the component force of its own gravity, it will slide forward or backward, which will endanger the safe driving of the vehicle. In order to prevent the car from sliding, most electric vehicles have the function of standing on the slope. It adopts the closed-loop method of speed to realize the slope. However, due to the delay in the response time, the slope is not timely enough, and a certain distance of the slope is often generated. Contents of the invention [0003] In view of this, the present invention provides a method and device for parking an electric vehicle on a slope, so as to realize fast parking on a slope. [0004] A method for parking an electric vehicle on a slope, comprising: [0005] Latch the non-zero torqu...

AI Technical Summary

Problems solved by technology

In order to prevent the car from sliding, most electric vehicles have the function of standing on the slope. It uses the speed closed-loop method to re

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