Sparse Observer-Based Sliding Mode Control For Networked Control Systems. Issue 1 (July 2017)

• Record Type: Journal Article
• Authors: Argha, Ahmadreza; Li, Li; Su, Steven W.; Nguyen, Hung
• Is Part Of: IFAC-PapersOnLine. Volume 50:Issue 1(2017)
• Page Start: 12997
• Page End: 13002
• Publication Date: 2017-07
• Subjects: Networked control systems -- discrete-time sliding mode control -- disturbance observer -- sparse systems -- linear matrix inequality; Automatic control -- Periodicals; 629.805
• DOI: 10.1016/j.ifacol.2017.08.1812
• Languages: English
• ISSNs: 2405-8963

Abstract

Abstract: This paper is devoted to the problem of designing a sparse distributed output feedback discrete-time sliding mode control (ODSMC) for the networked systems. A distributed structure is employed in the discrete-time sliding mode control framework by exploiting other sub-systems' information to improve the performance of each local controller/observer so that it can widen the applicability region of the given scheme. As the first step, a stability condition is derived for the overall closed-loop system obtained from applying ODSMC to the underlying interconnected system, by assuming a given structure for the control/observer network. In the second step, we explore a methodology to obtain a sparse control/observer network structure with the least possible number of communication links that satisfies the stability condition given in the first step. The boundedness of the obtained overall closed-loop system is analyzed and a bound is derived for the augmented system state which includes the closed-loop system state and the switching function.