Observer-Based Finite-Time Nonfragile Control for Nonlinear Systems With Actuator Saturation

作     者：Sakthivel, R. Priya, R. Mohana Wang, Chao Dhanalakshmi, P. 

作者机构：Bharathiar Univ Dept Appl Math Coimbatore 641046 Tamil Nadu India Yunnan Univ Dept Math Kunming 650091 Yunnan Peoples R China 

出 版 物：《JOURNAL OF COMPUTATIONAL AND NONLINEAR DYNAMICS》 (计算和非线性动力学杂志)

年 卷 期：2019年第14卷第1期

页      面：011004-011004页

核心收录：

学科分类：07[理学] 0802[工学-机械工程] 0701[理学-数学] 0801[工学-力学（可授工学、理学学位）] 070101[理学-基础数学] 

主　　题：discrete-time systems observer-based controller finite-time boundedness actuator saturation 

摘      要：This paper considers a design problem of dissipative and observer-based finite-time non-fragile control for a class of uncertain discrete-time system with time-varying delay, nonlinearities, external disturbances, and actuator saturation. In particular, in this work, it is assumed that the nonlinearities satisfy Lipschitz condition for obtaining the required results. By choosing a suitable Lyapunov-Krasovskii functional, a new set of sufficient conditions is obtained in terms of linear matrix inequalities, which ensures the finite-time boundedness and dissipativeness of the resulting closed-loop system. Meanwhile, the solvability condition for the observer-based finite-time nonfragile control is also established, in which the control gain can be computed by solving a set of matrix inequalities. Finally, a numerical example based on the electric-hydraulic system is provided to illustrate the applicability of the developed control design technique.