描述了两个控制系统间的相似性概念 ,讨论了一类具有不确定性的非线性相似组合系统的鲁棒镇定问题 .结果表明 ,作者构造的控制器具有结构相似性 .相似结构确实可以简化组合系统鲁棒镇定的判据 .这说明 ,在一定程度上 ,具有相似结构的组合系统其相似结构具有稳固系统的特性 The concept of similarity between two control systems is described and the robust stabilization problem for a class of nonlinear similar composite systems with uncertainties is discussed. The results show that the controllers constructed by the authors are structurally similar and the similar structure can indeed be simplified The criterion of robust stabilization for a composite system shows that, to some extent, a composite system with a similar structure has the characteristics of a robust system