Finite-Time Boundedness of Interconnected System Using Decentralized Output-Feedback Sliding Mode Control

• 成果类型: Article
• 署名作者: Li, Jiarui; Yan, Xing-Gang; Niu, Yugang
• 署名单位: Shanghai Maritime University; University of Kent; East China University of Science & Technology
• 刊物名称: IEEE TRANSACTIONS ON AUTOMATIC CONTROL
• ISSN/ISSBN: 0018-9286
• DOI: 10.1109/TAC.2024.3399092
• 发表日期: 2024
• 页码: 7847-7854
• 关键词: Interconnected systems; GENETIC ALGORITHMS; Sliding mode control; large-scale systems; uncertainty; observers; decentralized control; Finite-time boundedness (FTB); genetic algorithm (GA); large-scale interconnected systems; Output feedback; reduced-order approach; sliding mode control (SMC)

摘要

This work investigates the problem of decentralized output-feedback sliding mode control (SMC) for a class of large-scale systems under the requirement of finite-time boundedness (FTB). The regular form of sliding mode based on coordinate transformation, instead of the equivalent control method, is utilized to analyze the global FTB over both the reaching and sliding phases. Moreover, time-varying bounds of states over the operating interval are obtained, which is essential for the design of decentralized output-feedback SMC law to guarantee the reachability of the predesigned sliding surfaces within any given finite time. Further, a feasible solving algorithm based on a binary genetic algorithm is proposed to decouple the interconnection terms and optimize the FTB performance. Finally, a numerical example is given to verify the effectiveness of the proposed method.