四级阻尼可调式液压互联悬架系统性能研究

提出了一种新型四级阻尼可调式液压互联悬架 （FDAHIS） 系统。FDAHIS系统在被动液压互联悬架系统的阻尼阀上并联了两个常通孔面积不同的电磁开关阀，通过反馈控制策略控制电磁阀开闭状态，调节系统液压流量，从而实现阻尼四级可调。为了研究该系统性能，建立FDAHIS系统模型和七自由度整车模型。通过系统单元台架试验对该模型进行了验证。整车仿真结果表明，与被动的液压互联悬架 （HIS） 系统相比，FDAHIS系统在车辆行驶平顺性和抗俯仰性能方面表现更佳。

Performance Study of a Hydraulic Interconnected Suspension System with Four-Stage Adjustable Damping

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.