GUIBIN SUN et al: HARD POINTS OPTIMIZATION DESIGN OF AIR SPRING SUSPENSION

According to a company developed twelve meters bus, using the multi-body dynamics software ADAMS, they reached the conclusion that the change scope of the toe angle, and camber in the guide mechanism with wheel vertical, affects the operation stability. Utilizing: i) the air suspension guide mechanism of spatial position as design variables, ii) the front wheel alignment parameters as the objective function based on the insight module, iii) sensitivity analyzed in relevant hard point coordinates, and iv) experimentally designed and regression analyzed the variables, we optimized the hard points to improve the performance of the suspension system. The results show that the variation range of the front beam and camber angle decreases clearly with the optimized air suspension test. Through real vehicle verification, the simulation results are consistent with the trend of the real vehicle test, and the operation stability of the passenger car has a certain level of improvement.