Modeling and simulation of automobile braking system based on kinetic energy conversion

Fatal traffic accidents are related with the overlength braking distance and sideslip when the automobile is braked in an emergency. It is very important to study and improve the braking ability of the automobile. The anti-lock braking system (ABS) is the active method of increasing the braking ability. The ABS controller is the key to ABS. The modeling and simulation of the automobile braking system can be used in designing the ABS controller. The general braking model is built by analyzing the forces on the automobile body and it is difficult to be understood. A new method which establishes the braking model is presented in this paper. When the automobile is braking, the kinetic is worn down by frictions that come from the wheels and road, the wheels and the braking block. A single wheel mathematical model is deduced with this principle. The simulation models of this braking system and ABS are established. Simulations under Matlab/ Simulink are made. The braking distances obtained by the simulation are compared with the known data. The results show that the braking model based on the kinetic energy conversion is reliable. This method can provide a new way to analyze the automobile braking process.