Abstract: To realize the Anti-Slip Regulator(ASR)effect of the down-sized electric vehicles without hydraulic ABS with regulating the output torque of the motor,the integral separation PID control algorithm and the road automatic identification algorithm are employed.The control target value of wheelspin rate of driving wheels is determined by the automatic identification value or the empirical value according to the different working condition,and a pure-motor ASR is realized.A series of experimental simulations are carried out in different road conditions,including uniform pavement,bisectional road,transition coefficient road and chess road.The results show the proposed ASR can regulate the driving wheels wheelspin rates to the target value quickly and exactly,which means the control algorithms and strategies are effective.

Key words: Anti-Slip Regulation(ASR), electric vehicle, PID, control strategy