Control method for improving driving performance of pure electric vehicle

Abstract

The invention discloses a control method for improving driveability of a full electric vehicle and belongs to the field of automobile controlling. The method includes the following steps that driving wheel speed and motor rotating speed are obtained; the obtained driving wheel speed and the obtained motor rotating speed are calculated by combination with speed ratio of a main reducer of the electric vehicle so that revision torque is obtained; the obtained revision torque is overlaid to a torque request signal of a whole vehicle controller for a motor to serve as a new torque request signal so as to control the motor. According to the control method for improving driveability of the full electric vehicle, the obtained driving wheel speed and the obtained motor rotating speed are calculated by combination with the speed ratio of the main reducer of the electric vehicle to obtain the revision torque, the obtained revision torque is overlaid with an original torque request signal of the whole vehicle controller to form the new torque request signal so as to control the motor, motor output acceleration curve is quite smooth while a large value is maintained, thereby, fast acceleration of the full electric vehicle can be guaranteed and vehicle vibration can be effectively inhibited, the control method is simple and easy to implement, and driving comforts of the full electric vehicle are effectively improved.

Description

technical field [0001] The invention relates to the field of automobile control, in particular to a control method for improving the drivability of pure electric vehicles. Background technique [0002] New energy vehicles are widely considered to be one of the main ways to solve the problems of vehicle exhaust pollution and energy crisis. In order to accelerate the development of the new energy vehicle industry, promote energy conservation and emission reduction, and promote air pollution control, the country continues to promote the application of new energy vehicles Work. Under the vigorous support of national policies, a number of new energy vehicles - pure electric and hybrid vehicles - have entered the personal consumption market. However, consumers are the main buyers of pure electric vehicles or hybrid vehicles, and vehicle drivability is a big factor in consumers' decision to purchase vehicles. Therefore, drivability is an issue that must be considered for new energ...

AI Technical Summary

Problems solved by technology

[0005] Based on the problems existing in the above-mentioned prior art, the present invention provides a control method for improving the drivability of pure electric vehicles, which solves the problem of poor drivability of existing electric vehicles, which is difficult to drive without causing acceleration delay and acceleration weakness. Problem with vibration when stepping on the gas pedal

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