【摘要】 对组合式半挂车特殊工况下的液压悬架性能进行研究,建立车辆的1/4模型建立车辆的动力学模型,利用控制阀芯位移的电流与液压缸输出力之间的传递函数,设计出对阀控液压缸进行位置控制的PID控制器,以满足特殊工况下的车辆运行的稳定性。在Matlab/simulink仿真环境中建立相应的仿真模型。仿真结果表明:在特殊路面下液压悬架可以实现位置调节来适应路面情况,以保证载货平台的水平。更多还原

【Abstract】 For the research of assembled semi- trailer hydraulic suspension’s performance on a special conditions, a 1/4 vehicle dynamic model was developed. In the same time, Based on the a mathematic relationship between the force that the cylinder produced and the current which control the displacement of the spool, a PID controller for controlling the position of the cylinder was designed to meet the needs of stability when the semi-trailer travels on the slope road. The simulation model was built also by means of the software Matlab/simulink. The result indicated that the hydraulic suspension can ensure the levelness of its loading platform by adjusting its position when the semi-trailer travels on the slope road.更多还原