Unknown Input Observer Design for Linear Parameter-Varying Systems in a Bounded Error Context

• 成果类型: Article
• 署名作者: Li, Jitao; Wang, Zhenhua; Raissi, Tarek; Shen, Yi
• 署名单位: Harbin Institute of Technology
• 刊物名称: IEEE TRANSACTIONS ON AUTOMATIC CONTROL
• ISSN/ISSBN: 0018-9286
• DOI: 10.1109/TAC.2020.3027646
• 发表日期: 2021
• 页码: 4246-4251
• 关键词: Linear parameter-varying systems; set-membership estimation; unknown input observer

摘要

This article studies unknown input observer design for linear parameter-varying systems in a bounded error context. By presenting a novel unknown input observer structure, the output equation of linear parameter-varying systems is not restricted to be in a linear form. Moreover, by integrating decoupling technique and set-membership approach, a compromise is achieved between the restrictiveness and the conservativeness of estimation. Based on P-radius criteria, sufficient design conditions are derived in terms of linear matrix inequalities. Finally, numerical simulations of a vehicle lateral dynamics system are conducted to demonstrate the validity of the presented method.