| A novel four-stage damping adjustable hydraulic interconnected suspension (FDAHIS) system is proposed. In this system, two solenoid on-off valves with different normal hole areas are connected in parallel to the damping valve of a passive hydraulic interconnected suspension (HIS) system. The solenoid valve's operational states, either open or closed, are controlled by the feedback control strategy, regulating the hydraulic flow to enable four-stage damping adjustment. In order to study the system performance, models for both the FDAHIS system and a 7-DOF vehicle are established. The model is validated through bench testing of the system. The vehicle simulation results show that the FDAHIS system performs better in ride comfort and anti-pitch performance than the passive HIS system. |
