Research on acceleration slip regulation for battery electric vehicle


To be published on 09/08/2024

Brake Colloquium & Exhibition - 42nd Annual
Authors Abstract
As an important part of the automotive electronic control system, the acceleration slip regulation takes the tire slip rate as the main control target. By controlling the wheel driving force, the tire maintains a stable adhesion state to obtain good handling stability and power.This paper takes electric vehicles with independent front and rear axles as the research object, and studies the application of acceleration slip regulation in vehicle drive control.At present, the main technologies for acceleration slip regulation of electric vehicles include: logic threshold control, PID control, sliding mode control and fuzzy control. Since the car is a complex and changeable system, using one of the above methods alone to control car slippage may not yield ideal results. Therefore, this paper considers using two or more control methods to comprehensively control it, so that the control method has certain intelligence.The acceleration slip regulation based on PID control theory is stable and reliable. However, the shortcomings are also obvious. The parameters cannot be adjusted in real time. If the parameters are uncertain, the control effect will be affected and the robustness will be poor. This paper combines the advantages of fuzzy mathematics and uses fuzzy reasoning based on the fuzzy control rules and the actual response of the controlled system. , reasonably adjust the PID parameters to improve the adaptive performance of the control system.Considering that when the vehicle is driving on a road section with different adhesion coefficients on the left and right, the wheel on one side will rotate severely and the wheel on the opposite side will slip slightly or even not slip. In order to ensure the longitudinal stability of the car when driving, the front and rear wheels The speed is consistent, so that the vehicle's front and rear wheels use the same adhesion coefficient, and then the vehicle's front and rear axle torque needs to be distributed.Since the electric vehicle with independent front and rear axles driven in this article adopts a vehicle layout with equal front and rear axle loads, the proportional axle load distribution method is a method of evenly distributing the front and rear driving forces.Simulation experiments show that electric vehicles controlled by a acceleration slip regulation that considers torque distribution have better driving stability and safety.
Meta TagsDetails
Kang, K., Liu, X., and Liu, X., "Research on acceleration slip regulation for battery electric vehicle," SAE Technical Paper 2024-01-3051, 2024, .
Additional Details
To be published on Sep 8, 2024
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Technical Paper