一类前馈非线性系统的输出反馈半全局镇定  

SEMIGLOBAL OUTPUT-FEEDBACK STABILIZATION FOR A CLASS OF FEEDFORWARD NONLINEAR SYSTEMS

作　　者：刘梦良[1] 刘允刚[1] 张健[2] 

机构地区：[1]山东大学控制科学与工程学院,济南250061 [2]郑州大学数学与统计学院,郑州450001

出　　处：《系统科学与数学》2014年第12期1486-1495,共10页Journal of Systems Science and Mathematical Sciences

基　　金：国家自然科学基金(61325016;61273084;61233014);山东省自然科学杰出青年基金(QJ200919);山东大学自主创新项目(2012JC014)资助课题

摘　　要：研究一类前馈非线性系统的输出反馈半全局镇定问题.值得指出的是,文章研究的系统不可测状态依赖增长包含线性和高阶两部分,融合并推广了许多现有文献中的增长条件.文章基于线性低增益观测器,利用输出反馈占优方法,构造了结构简单且易于实现的线性输出反馈控制器.通过适当地选取设计参数,可以保证闭环系统零解是局部指数稳定的,且从给定包含原点的紧子集出发的解最终趋向于零.仿真算例验证了文章结果的有效性.This paper considers the semiglobal output-feedback stabilization for a class of feedforward nonlinear systems.Notably,the systems under investigation possess unmeasurable states dependent growth including linear and higher-order parts,which incorporate and extend those in the existing many literature.Based on a linear lower-gain observer,a linear output feedback controller is constructed by outputfeedback domination approach,which is structurally simple and easy to implement.By appropriately choosing the design parameter,it can be guaranteed that the zero solution of resulting closed-loop system is locally exponentially stable,and by starting from the given compact set containing the origin,all the solutions of the closed-loop system converge to the origin.A numerical example is provided to illustrate the effectiveness of the theoretical results.

关 键 词：前馈非线性系统 半全局镇定 输出反馈 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]