Adaptive Robust Control for A Class of Nonlinear Systems with Unknown Uncertainties  

作　　者：Li, L.  Yang, G.  Zhao, C. 

机构地区：[1] Ctr. for Space Sci. and Applied Res., Chinese Academy of Sciences, Beijing 100080, China

出　　处：《Journal of Systems Engineering and Electronics》2001年第3期51-56,共6页系统工程与电子技术（英文版）

摘　　要：The problem of robust stabilization for nonlinear systems with partially known uncertainties is considered in this paper. The required information about uncertainties in the system is merely that the uncertainties are bounded, but the upper bounds are incompletely known. This paper can be viewed as an extension of the work in reference [1]. To compensate the uncertainties, an adaptive robust controller based on Lyapunov method is proposed and the design algorithm is also suggested. Compared with some previous controllers which can only ensure ultimate uniform boundedness of the systems, the controller given in the paper can make sure that the obtained closed-loop system is asymptotically stable in the large. Simulations show that the method presented is available and effective.The problem of robust stabilization for nonlinear systems with partially known uncertainties is considered in this paper. The required information about uncertainties in the system is merely that the uncertainties are bounded, but the upper bounds are incompletely known. This paper can be viewed as an extension of the work in reference [1]. To compensate the uncertainties, an adaptive robust controller based on Lyapunov method is proposed and the design algorithm is also suggested. Compared with some previous controllers which can only ensure ultimate uniform boundedness of the systems, the controller given in the paper can make sure that the obtained closed-loop system is asymptotically stable in the large. Simulations show that the method presented is available and effective.

关 键 词：Adaptive algorithms Adaptive control systems Asymptotic stability Closed loop control systems Computer simulation Interfaces (computer) Lyapunov methods Robustness (control systems) Uncertain systems 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]