Model Predictive Control of Switched Linear Systems With Persistent Dwell-Time Constraints: Recursive Feasibility and Stability

• 成果类型: Article
• 署名作者: Zhuang, Songlin; Gao, Huijun; Shi, Yang
• 署名单位: Yongjiang Laboratory; University of Victoria; Harbin Institute of Technology; Yongjiang Laboratory; University of Victoria
• 刊物名称: IEEE TRANSACTIONS ON AUTOMATIC CONTROL
• ISSN/ISSBN: 0018-9286
• DOI: 10.1109/TAC.2023.3248279
• 发表日期: 2023
• 页码: 7887-7894
• 关键词: Model predictive control (MPC); persistent dwell-time (PDT); recursive feasibility and stability; switched system

摘要

This article develops a model predictive control (MPC) framework to co-optimize switching sequences and control inputs for switched linear systems subject to persistent dwell-time (PDT) constraints. As a class of time constraints, PDT has been demonstrated to be more general and flexible than others like dwell-time or average dwell-time. Although time constraints are widely used in applications for safety and stability concerns, MPC of switched systems with time constraints often formulates a mixed-integer nonlinear program that cannot obtain the optimal solution in polynomial time, and thus suffers from the loss of recursive feasibility and stability. To address this problem, we propose several novel techniques: 1) the construction of the terminal sets based on two constraint admissible PDT contractive sets, 2) the introduction of PDT and historical constraints, 3) the use of two nonglobally optimal solutions, and 4) the prolonged prediction horizon. It is the first time that MPC approaches are applied to the co-optimization problem of switched systems under time constraints with guaranteed recursive feasibility and stability.