具有不确定性的主动悬架鲁棒综合控制研究
发布时间：2018-10-18 08:11
【摘要】：针对因主动悬架控制存在参数不确定导致标称系统控制易出现鲁棒性差问题,考虑了弹簧刚度、减振器阻尼、轮胎刚度、簧载质量及电机作动器的电机常数等参数的不确定性,通过线性分式变换建立了含不确定性的半车悬架动力学模型。基于结构奇异值理论,设计了μ综合控制器,结合某车参数进行了频域与时域仿真,并将μ综合控制与H∞控制进行了对比。仿真结果表明所设计的鲁棒μ综合控制器比H∞控制具有更好的鲁棒性能,能更有效地改善车辆的平顺性、减小悬架的动挠度及车轮动载。
[Abstract]:In view of the problem of poor robustness in nominal system control caused by uncertain parameters in active suspension control, the uncertainties of spring stiffness, damper damping, tire stiffness, spring load mass and motor constant of motor actuator are considered. The dynamic model of semi-vehicle suspension with uncertainty is established by linear fractional transformation. Based on the structural singular value theory, the 渭 synthesis controller is designed, and the frequency domain and time domain simulation are carried out in combination with some vehicle parameters, and the 渭 synthesis control and H 鈭，
本文编号：2278523
[Abstract]:In view of the problem of poor robustness in nominal system control caused by uncertain parameters in active suspension control, the uncertainties of spring stiffness, damper damping, tire stiffness, spring load mass and motor constant of motor actuator are considered. The dynamic model of semi-vehicle suspension with uncertainty is established by linear fractional transformation. Based on the structural singular value theory, the 渭 synthesis controller is designed, and the frequency domain and time domain simulation are carried out in combination with some vehicle parameters, and the 渭 synthesis control and H 鈭，
本文编号：2278523
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