描述了两个控制系统间的输出反馈相似的概念。由这类控制系统互联而成的组合系统仍具有某种相似结构。利用这种相似结构设计出的分散输出反馈控制器可使组合系统得到鲁棒镇定。仿真结果表明了所采用方法的有效性。 Describes the similar concept of output feedback between two control systems. Combinations of interconnected control systems of this type still have a similar structure. The decentralized output feedback controller designed with this kind of similar structure can make the combination system robustly robust. Simulation results show the effectiveness of the proposed method.