A kind of pure electric vehicle rapid release throttle torque filter control method

Abstract

The invention relates to a fast accelerator release torque filtering control method for a pure electric automobile. The method comprises the following steps that 1) the first filtering time constant and the second filtering time constant are set; 2) a vehicle controller is used for controlling the motor filtering torque to be changed from the initial value to the first target value; 3) the motor filtering torque gradually approaches to the first target value in the first filtering time constant; and 4) after the first stage control finishes, the motor filtering torque is changed from the first target value to the second target value in the second filtering time constant. The fast accelerator release torque filtering control method has the beneficial effects that the smoothness of the motor filtering torque in the process of being changed from the driving torque to the electricity generation torque can be effectively improved by the control method, the unsmooth driving discomfort feeling of the vehicle is guaranteed to be eliminated at the fast accelerator release moment of the vehicle, the recovery efficiency of the braking energy of the vehicle is ensured, and meanwhile, the driving performance and the comfort performance are improved to a certain degree.

Description

technical field [0001] The invention relates to the technical field of pure electric vehicles, in particular to a torque filter control method for quick-release throttle 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, pure electric vehicles can recycle energy during braking and downhill to improve energy utilization. And pure electric vehicles can use cheap "valley elect...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a control method that can effectively control the electric vehicle to reduce vehicle impact, improve driving comfort, and ensure braking energy through torque filtering when the torque requested by the electric vehicle is quickly dropped. Recycling efficiency; solve the problem that the existing system cannot perform complex filtering processing on the process of emergency release of the accelerator of pure electric vehicles

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