对一类具有相似结构的不确定非线性组合大系统构造其鲁棒渐近观测器 ,利用原系统的相似性 ,使得所设计的各个分散观测器在结构上亦具有相似性 ,由于系统结构的特殊性 ,相对于现有结果 ,所设计的方法计算量小 ,易于工程实现· 最后 ,举例说明所提出的渐近观测器的设计方法· A robust asymptotic observer for a class of uncertain nonlinear composite systems with similar structure is constructed. By using the similarity of the original system, the scattered observers designed by the system are also similar in structure, The particularity of the proposed method is less computationally intensive and easier to implement than the existing ones. Finally, the design of the proposed asymptotic observer is illustrated