Study on Control Strategy and Simulation for Electric Power Steering System

Based on the structure and working principle of electric power steering system(EPS),the dynamic models of torque sensor、input shaft and motor are established.The control strategy of electric power steering system is analyzed.Aiming the characteristic of power-補 ssisted control,phase lead compensation strategy、inertia compensating current strategy and damp compensating current strategy are proposed.Through the simulation of the system mode,the power control system meet the requirements of steering portability,good sense of road.The control stability of full speed is also very good.