Co-Simulation Research of Integrated Electro-Hydraulic Braking System 2016-01-1647
A program of integrated electro-hydraulic braking system is proposed, and its structural composition and working principle are analyzed. According to the structural and mechanical characteristics of all key components, through some reasonable assumptions and simplifications, a motor, a brake master cylinder, four brake wheel cylinders, solenoid valves and an ESP (Electronic Stability Program) algorithm model is set up and simulations of typical braking conditions are carried out based on the Matlab/Simulink. Finally, after the assembly of each sub-model is complete and combining a vehicle which is set up in CarSim software environment, simulation tests and comprehensive performance analysis of the active safety stability control for a vehicle in double lane change and single lane change situations are carried out respectively. According to the dynamic characteristic curves of system, the effects of different structural and control parameters on braking performance are analyzed. To improve overall braking performance, the results would help to match and optimize system parameters, and provide reference data for further clarifying ideas and goals of parameters optimization. The vehicle control results show that the proposed integrated electrohydraulic braking system has characteristics of a simple structure, very low cost, a good controllability, could be easily integrated with ABS (Anti-lock Braking System), TCS (Traction Control System), ESP and other intelligent electronic control braking functions, and has more extensive application value.