Simulation of automotive brake system for pedal feel analysis based on SimulationX

CHENG Hai-bo1， TIAN Ming1， LI Xiao-di1， QIN He-ying2， LIU Chen2， LIONEL Bel-mon2
（1. Brilliance Automotive Engineering Research Institute，Shenyang 110141， China；
2. Global Crown Technology，Beijing 100027， China）

Abstract： Aiming at analysis and tuning of the vehicle brake pedal feeling，the current simulation way can not be used to simulate the brake pedal feeling accurately. The SimulationX was applied of analyzing the brake pedal feelingas a number of scientific disciplines，this software was used to establish the parts simulation model and the whole vehicle brake system simulation model，and this software also was used to run the brake performance dynamic simulation. According to simulation model，the brake parts dimensions and characteristics curve and value were changed and adjusted，then the most ideal brake pedal feeling curve was gotten. The car was tested on the road for checking the correction of model，and the testing result was compared with the SimulationX. The result indicates that SimulationX model result is very similar with testing data of the car，so SimulationX as a simulation analysis software  can be satisfied with the requirement of brake pedal feeling tuning.
Key words： brake system； system simulation；ITI SimulationX； brake pedal feeling