A generalized robust decentralized control methodology for a class of interconnected nonlinear systems subject to uncertainties and disturbances. (November 2016)

• Record Type: Journal Article
• Authors: Zhang, Chuanlin; Li, Hui
• Is Part Of: Nonlinear analysis. Volume 22(2016)
• Page Start: 55
• Page End: 71
• Publication Date: 2016-11
• Subjects: Interconnected nonlinear systems -- Decentralized control -- Robust control -- Output feedback -- Sampled-data control; Nonlinear functional analysis -- Periodicals; Analyse fonctionnelle non linéaire -- Périodiques; Nonlinear functional analysis; Periodicals; 515.7248
• DOI: 10.1016/j.nahs.2016.03.006
• Languages: English
• ISSNs: 1751-570X

Abstract

Abstract: This paper studies the problem of robust decentralized control for a class of large-scale interconnected systems subject to uncertainties and disturbances via a generalized output feedback control method. First, a generalized extended state observer is constructed separately for each subsystem with less dependence of the precise system information and structure. Second, an explicit formula of the easy-transplantable decentralized robust control law is presented with an active compensation of disturbance. Moreover, the proposed methodology is extended to the sampled-data control case without any additional assumptions and hence will ease the practical implementations. It is shown that by a delicate analysis procedure of both continuous-time and hybrid scenarios, the closed-loop system can be rendered semi-globally asymptotically stable only using decentralized output feedback anti-disturbance controller. Numerical simulations show the efficiency of the proposed method.