Simulation Studies of Hydraulic Power Steering System Based on AMESim

The basic structure and the principle of hydraulic power steering system were introduced. The mechanism-liquid coupled simulation model is modeled by simulation software AMESim in order to solve the limitations of transfer function method in hydraulic power steering system(HPS) simulation model. The simulation analyzed the dynamic response of rack displacement influence among torsional stiffness, hydraulic cylinder piston diameter and system fuel supply amount in HPS system. The results showed that reducing the rigidity of torsion bar had little effect on dynamic response of the system, while increasing hydraulic cylinder piston diameter and system fuel supply amount had a great impact. This result provided the theoretical foundation for the design and optimization of HPS system.