A new nonlinear output tracking controller via output-feedback  

作　　者：Yun ZHANG Yungang LIU Yuqin DING 

机构地区：[1]School of Control Science and Engineering, Shandong University, Jinan Shandong 250061, China.

出　　处：《控制理论与应用（英文版）》2006年第4期372-378,共7页

基　　金：This work was supported by the National Natural Science Foundation of China(No.60304002), and the Science and Technical Development Plan ofShandong Province(No.2004GG4204014).

摘　　要：In this paper, the output tracking control is investigated for a class of nonlinear systems when only output is available for feedback. Based on the multivariable analog of circle criterion, an observer is first introduced. Then, the observer-based output tracking controller is constructively designed by using the integral backstepping approach together with completing square. It is shown that, under relatively mild conditions, all the closed-loop signals are uniformly bounded. Meanwhile the system output asymptotically tracks the desired output. A simulation example is given to illustrate the effectiveness of the theoretical results.In this paper, the output tracking control is investigated for a class of nonlinear systems when only output is available for feedback. Based on the multivariable analog of circle criterion, an observer is first introduced. Then, the observer-based output tracking controller is constructively designed by using the integral backstepping approach together with completing square. It is shown that, under relatively mild conditions, all the closed-loop signals are uniformly bounded. Meanwhile the system output asymptotically tracks the desired output. A simulation example is given to illustrate the effectiveness of the theoretical results.

关 键 词：Nonlinear systems Multivariable analog of circle criterion Output tracking control OUTPUT-FEEDBACK Integral backstepping approach 

分 类 号：O23[理学—运筹学与控制论] TP13[理学—数学]