Research on EPS Assist Characteristics Based on Hardware-in-loop Simulation

Aiming at the functions and characteristics of the EPS power steering system, power model of electric power steering is established, the ideal power-assisted characteristic curve is analyzed, the EPS steering system test is designed based on the bench, and the driving simulator hardware-in-loop test is carried out. The effects of EPS power steering in stationary and motion state are tested. The results show that the experimental results are accord with the ideal assist characteristic curve, and the designed driving simulator hardware-in-loop EPS experiment has a good assist effect, which is beneficial to improve the operating sensitivity and steering stability of electric vehicles.