【摘要】 利用线性分式变换理论对二自由度车辆主动悬架系统进行混合不确定建模分析,通过结构奇异值理论和D-K迭代设计过程,设计了鲁棒μ综合控制器.仿真结果表明:在给定的不确定范围内,鲁棒μ综合控制器保证了主动悬架系统的名义性能和鲁棒性;与基于名义模型设计的H∞控制器相比,闭环系统能获得更好的鲁棒性能.更多还原

【Abstract】 The mixed uncertainty modeling for a two degree of freedom active suspension vehicle model was presented with the theory of linear fractional transformation;and the robust μ synthesis controller was designed based on the theory of structure singular value and D-K iteration.It can be seen that the nominal performance and the robustness of the closed-loop system of robust μ synthesis controller are guaranteed at given uncertainty intervals.Furthermore,the robust performance is better than that of H_∞ controller based on nominal model of the active suspension.更多还原