A pure electric vehicle drive anti-skid control system and method thereof

Abstract

The invention provides an acceleration anti-slip control system and a method of a pure electric vehicle. The acceleration anti-slip control system comprises a gear selector, a brake pedal, an accelerator pedal, a whole vehicle controller, an anti-lock brake system and a motor controller; the gear selector, the brake pedal and the accelerator pedal are respectively connected with the whole vehicle controller and used for transmitting present gear signals, on / off signals of the brake pedal and openness signals of the accelerator pedal to the whole vehicle controller; and the whole vehicle controller is respectively connected with the anti-lock brake system and the motor controller by CAN buses. In the acceleration anti-slip control method, a target is controlled by using optimal slippage rate and the slippage rates of the wheels are controlled to be near the optimal slippage rate by regulating control parameters, so that the vehicle can obtain excellent acceleration anti-slip control effect when traveling under severe road conditions; and moreover, the wrong judgment of the slipping of tires during steering is avoided effectively by identifying steering conditions.

Description

technical field [0001] The invention relates to the control field of electric vehicles, in particular to a pure electric vehicle drive anti-skid control system and a method thereof. Background technique [0002] With the continuous increase of car ownership and environmental and energy issues becoming the focus of global attention, pure electric vehicles with the advantages of energy saving and environmental protection have become one of the important development directions of the automotive industry in the future. In order to improve the directional stability and maneuverability of electric vehicles, it is necessary to carry out effective drive control. TCS (Traction Control System) can prevent the car from slipping during starting or accelerating, especially when the car is on an asymmetrical road or turning, it can prevent the driving wheels from idling, so that the vehicle can achieve the best driving force. [0003] The current anti-skid control methods for pure electr...

AI Technical Summary

Problems solved by technology

However, in the actual application of the above control method, if the vehicle is in the working condition of turning at a large angle and starting, due to the large ratio of left and right wheel differences, it is easy to be mistaken for the vehicle being in a slipping state, resulting in uneven starting and affecting normal driving.

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