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基于大客车单轴空气悬架的动力学方程,利用MATLAB/Simulink和DSHplus建立了带空气弹簧模块的联合仿真模型,为获得空气弹簧模块关键参数,设计进行了空气弹簧激振台试验和进排气电磁阀的流量特性试验,并针对单轴模型完成PID高度控制器设计。仿真结果表明该控制器动作及时,响应迅速,且避免了超调。基于单轴空气悬架试验车进行了试验,结果表明高度控制工作可靠,反应时间短、调节准确。
Based on the dynamic equations of the single-axle air suspension for buses, a co-simulation model with air spring module was established by using MATLAB / Simulink and DSHplus. In order to obtain the key parameters of the air spring module, the air spring vibration table was designed and tested Gas solenoid valve flow characteristics of the test, and for a single-axis model to complete the PID height controller design. Simulation results show that the controller moves quickly, responds quickly and avoids overshooting. Based on the uniaxial air suspension test car, the test results show that the height control is reliable, the reaction time is short, and the adjustment is accurate.