The Design And Research Of ABS Anti-lock Braking Experiment System Based On PLC

ABS equipment is an effective measures for improving the stability of vehicle. The ABStechnology has already been put into practical in other countries, but our country has notformed our own intellectual property. So, it is important to increase our country ABStechnology and the stability of vehicle for the international competitiveness of China'sautomobile industry, which has important significance implementation of the strategy.In this paper, we use ABS as controlled object. The working process and running state ofthe ABS Anti-lock Braking System is controlled by PLC and configuration software.Simulating the slip ratio of the car by digital PID and Fuzzy Algorithm with the help ofSimulink.This paper studied the ABS anti-lock braking system working principle and workingprocess. Analysising of vehicle dynamics model and its mathematical expression of the brakemodel, established MATLAB / Simulink simulation model of single-wheel vehicle, tires,brake system. Established PID controller and fuzzy controller by MATLAB / Simulink. UsingSimulink to simulate and compare on PID and fuzzy controller, respectively.The simulation of ABS anti-lock braking experiment system is relied on PLC, thehardware part including: PLC controller, rotary encoder and three-phase induction motor.the software part relized the fuzzy control algorithm programming, through configurationsoftware, we can see the trajectory of the vehicle and the vehicle in controlling monitoringinterface. Simulation results show that the fuzzy algorithm in ABS anti-lock braking system,played a good control performance.