Robust Control of Networked Systems With Variable Communication Capabilities and Application to a Semi-Active Suspension System

• Published in: IEEE/ASME transactions on mechatronics Vol. 21; no. 4; pp. 2097 - 2107
• Main Authors: Yin, Xunyuan, Zhang, Lixian, Zhu, Yanzheng, Wang, Changhong, Li, Zhaojian
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.08.2016; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Attenuation; Channel switching; Channels; Communication channels; controller design; Controllers; Data communication; Delay effects; Disturbances; IEEE transactions; Mechatronics; multiple communication channels (MCCs); network control systems (NCSs); Robust control; semi-active suspension system; Suspension systems; Switches; Switching; Time delay
• ISSN: 1083-4435; 1941-014X
• DOI: 10.1109/TMECH.2016.2553522

This paper is concerned with a robust control problem of a class of networked systems operated within a multiple communication channels (MCCs) environment. A practical scenario is considered that the active channel in such MCCs for the data communication is switched and the switching is governed by a Markov chain. For each channel, two network-induced imperfections, time delays, and packet dropouts with different characteristics are taken into account. Suppose that the practical plant is subject to energy-bounded disturbance and norm-bounded uncertainties, a robust controller is designed to ensure that the closed-loop system is robustly stable and achieves a disturbance attenuation index against the phenomenon of channel switching. A semi-active suspension system is introduced to illustrate the effectiveness, applicability of the proposed approach, and to demonstrate the advantages of the MCCs scheme within the channel-switching framework.