一类非线性大系统的鲁棒变结构观测器  

Robust variable structure observer for a class of nonlinear large-scale systems with uncertainties

作　　者：向峥嵘[1] 陈庆伟[1] 胡维礼[1] 

机构地区：[1]南京理工大学自动化系,江苏南京210094

出　　处：《系统工程与电子技术》2006年第3期418-420,共3页Systems Engineering and Electronics

基　　金：国家自然科学基金资助课题(60174019)

摘　　要：研究了一类具有结构和参数不确定性的非线性关联大系统状态观测器设计问题。在假定非线性系统的线性部分是可观测、不确定性和关联项满足Lipschitz条件的情况下,利用变结构控制的思想提出了一种非线性状态观测器设计方案,并证明了该观测器的指数收敛特性。所设计的观测器对结构和参数不确定性具有较强的鲁棒性。最后给出仿真研究说明了所提方法的有效性。The design problem of robust state observers for a class of nonlinear large-scale interconnected systems with uncertainties is considered. On the basis of simple assumptions on the system equation, a nonlinear state observer is proposed, and the exponcntial asymptotic convergence of the estimated state is proved using Lyapunov stability theorem. Attractive features of the proposed method include a systematic procedure of observer design and the robustness against model uncertainties. An example is also presented, showing the effectiveness of the proposed observer.

关 键 词：大系统 非线性系统 状态观测器 鲁棒性 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]