Control method for filtering sudden acceleration torque of pure electric automobile

Abstract

The invention relates to a control method for filtering a sudden acceleration torque of a pure electric automobile, which comprises the following steps that: 1) after meeting a predetermined sudden acceleration condition, a motor requires that the torque is changed from an initial value before sudden acceleration to a first step torque target value; 2) when the target torque of the motor is close to a limited value of the first step torque target value, the first step control is finished, and the motor requires that the torque is changed from the first step torque target value to a second step torque target value; and 3) the target torque of the motor is gradually close to the second step torque target value by setting and adjusting the filter time of filter function. The invention has the beneficial effects that the sudden acceleration system of the pure electric automobile controlled by the method can effectively avoid fast motor torque changes caused in the sudden acceleration of the automobile and motor torque changes when the motor torque is close to zero torque, thereby reducing the impact stressed by the automobile and improving the driving comfort.

Description

technical field [0001] The invention relates to the technical field of pure electric vehicles, in particular to a control method for rapid acceleration torque filtering of pure electric vehicles. Background technique [0002] As the international community pays more and more attention to energy security and environmental protection issues, countries have increasingly stringent requirements on vehicle emissions. Reducing dependence on energy and realizing energy conservation and emission reduction has become an urgent problem to be solved for the sustainable development of the world economy. Hybrid vehicles and pure electric vehicles have become the development trend of today's automobile industry. Pure electric vehicles have the advantages of no pollution, low noise, simple structure and maintenance. At the same time, the pure electric vehicle can recover the energy when braking and going downhill, so as to improve the energy utilization rate. And pure electric vehicles c...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a control method for rapid acceleration torque filtering of pure electric vehicles, which can effectively avoid the excessive change of motor torque caused by the rapid accelera...

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