仿射非线性系统的一种观测器设计方法  

An Observer Design Method for Affine Nonlinear Systems

作　　者：朱芳来[1] 

机构地区：[1]桂林电子工业学院计算机系,广西桂林541004

出　　处：《信息与控制》2005年第5期600-603,共4页Information and Control

基　　金：国家自然科学基金资助项目(60464001);广西省自然科学基金资助项目(桂科自0339069)

摘　　要：对仿射非线性系统全维观测器设计方法进行了讨论,提出了一种设计方法.该方法基于微分R iccati方程的正定解,观测器的增益矩阵通过R iccati方程的正定解给出,因而观测器增益矩阵为时变的.通过坐标变换,用李亚普诺夫方法对观测器的存在性进行了论证.对一个实际模型的仿真分析表明了该方法的实用性和正确性.*The design methods of full-order observers for atone nonlinear systems are discussed and a kind of design method is developed. The design method is based on the positive definite solution of a differential Riccati equation,with which the time-varying gain matrix of the observer is determined. The existence of the observer is proved by a way of coordinate transformation based on Lyapunov theory. The simulation results of an actual model show the practicality and validity of the proposed observer.

关 键 词：仿射非线性系统 微分Riccati方程 全维观测器 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]