【摘要】 用线性矩阵不等式（ＬｉｎｅａｒＭａｔｒｉｘＩｎｅｑｕａｌｉｔｙ，ＬＭＩｓ）给出一类结构化的参数不确定系统是二次稳定的充要条件．由此考虑了受控系统基于观测器的输出反馈鲁棒Ｈ∞控制的综合问题更多还原

【Abstract】 By employing linear matrix inequality , this paper gives a sufficient and necessary condition that ensured the systems with structured parameter uncertainty to be quadratic stable. Then the Robust H ∞  control based on the output feedback observer for controlled system is discussed.更多还原