基于磁流变液阻尼器的矿用铰接式自卸车前悬架模糊控制研究

摘要

The model of a semi-active suspension with MRD (Magneto-Rheological Damper) of minearticulated dump truck was set up to explore the high-efficient vibration control of this kind of suspension.A double-input and single-output fuzzy control system of the suspension was designed,and its simulation model was built by Fuzzy Logic Toolbox of MATLAB.In addition,simulation of the semi-active suspension under random road excitation was conducted by using Simulink.After studying the variation laws of such four parameters as vertical acceleration of suspended mass,angular acceleration of suspended mass,suspension dynamic deflection and tire dynamic load,it was concluded that the fuzzy control of the semi-active suspension could effective improve the ride comfort of the mine articulated dump truck.%通过建立一种基于磁流变液阻尼器的半主动矿用自卸车前悬架模型,来探索该类悬架的高效振动控制方法.设计了一种双输入单输出的悬架模糊控制器,并利用MATLAB模糊控制工具箱建立了其仿真模型.利用Simufink对半主动悬架在随机路面激励下进行仿真计算.通过研究悬挂质量垂向加速度、悬挂质量角加速度、悬架动挠度和轮胎动载4个参数的变化规律,发现模糊控制半主动悬架可有效改善矿用铰接式自卸车的平顺性和乘坐舒适性.