Antilock Brake System Modeling And Simulation

A good method to study vehicle dynamics is to construct a vehicle mathematical model. The dynamic simulation is one of the best means for vehicle performance research, which is developing based on the model.This thesis describes the fundamental principle of ABS and discuss sevral control methods of ABS in common use, emphasis on the logic gate control. A mathematical model is set up for heavy truck with air braking system, including vehicle model, brake model,tire model and controller model. A computer simulation program is written with Visual BasicS.0 and MatlabS. 3. It is easy to modify and debug because of its block construction. Through the computer simulation, compares braking performance with and without ABS, discusses the main factors which influence the performance of ABS, finds suitable control logic, threshold values for this kind of vehicle.The dynamics model which is built in this thesis is helpful for the vehicle design and ABS developing.