Analysis ofassist characteristic ofelectric hydraulic power steering system

Wenguang Liu, Ren He, Zhuan You

COMPUTER MODELLING & NEW TECHNOLOGIES 2014 18(12D) 46-50

SchoolofAutomobileandTrafficEngineering,JiangsuUniversity,Zhenjiang212013,Jiangsu, China

According to vehicle handling dynamics and multi-body dynamics, the dynamic steering torque geometric model considered the change of the front wheel ground was established. The vehicle mathematical model and thetire model forvehiclesteering system wereanalyzed.Fuzzy PID controlmethod was used to control influence assist steering of electric hydraulic power steering (EHPS). The results show that control method of EHPS achieves the adaptive change of assist steering. This method enhances the stability of driving vehicle and steering portability.