驾驶员座椅半主动空气悬架系统振动特性实验研究

构建了座椅半主动悬架振动特性测试实验系统，将带附加气室的空气弹簧、比例流量阀及磁流变减振器同时应用于座椅悬架，通过控制比例流量阀输入电压和磁流变减振器输入电流调节座椅悬架系统的刚度和阻尼，对不同参变量下座椅悬架系统的振动特性进行了实验研究。研究结果表明，在共振区，比例阀输入电压和磁流变输入电流的变化对系统位移传递率和加速度均方根值影响较大，而在低频振动区和隔振区影响较小；比例阀电压的增大可以降低系统的共振频率，磁流变电流的增大可以减小系统在共振区的位移传递率和加速度均方根值。

Research on vibration characteristics of the seat semi-active suspension system

Based on air spring with auxiliary chamber and MR damper, a new experimental system of semi-active air suspension seat was established. Suspension stiffness and damping were respectively adjusted by proportional valve input voltage and damper input current. The seat suspension vibration characteristics under different parametric were experimentally studied. The results show that the proportional valve input voltage and damper input current have a greater effect on dynamic amplification factor and acceleration RMS in resonance region, while the low frequency vibration and the isolation region are less affected. The natural frequency of seat suspension will decrease with the increase of proportional valve input voltage, the dynamic amplification factor and acceleration RMS in resonance region will decrease with the increase of damper input current.