Automobile Anti-Lock Brake System Fuzzy Variable Structure Control
For the problem of insufficient use of the ground adhesion coefficient and high nonlinearity of the Anti-lock Braking System(ABS)in the process of automobile braking,a road surface recognition al-gorithm is designed based on Burckhardt's tyre model,and the optimal slip rate detected by the road sur-face recognition algorithm is fed into the fuzzy variable structure control,so as to propose a fuzzy variable structure control strategy for ABS based on road surface detection.The results of the simulation experi-ments show that the road surface recognition algorithm has fast response and high accuracy;under the conditions of variational road surface,the fuzzy variable structure control reduces the braking time by 7%and the braking distance by 6%compared with the variable structure control,and the amplitude of the jitter vibration of the controller output is effectively attenuated.
anti-lock brake systemroad surface recognitionfuzzy variable structure controloptimal slip ratio