A Direct Parameter-Error Codesign Approach of Discrete-Time Saturated LPV Systems

• 成果类型: Article
• 署名作者: de Souza, Carla; Leite, Valter J. S.; Tarbouriech, Sophie; Castelan, Eugenio B.; Silva, Luis F. P.
• 署名单位: Universidade Federal de Santa Catarina (UFSC); Universite de Toulouse; Centre National de la Recherche Scientifique (CNRS)
• 刊物名称: IEEE TRANSACTIONS ON AUTOMATIC CONTROL
• ISSN/ISSBN: 0018-9286
• DOI: 10.1109/TAC.2022.3163061
• 发表日期: 2022
• 页码: 4870-4876
• 关键词: actuators; Data communication; Symmetric matrices; Linear systems; Design methodology; Adaptive control; Robustness; Codesign approach; Event-triggered control (ETC); linear parameter-varying (LPV) systems; parameter-deviations; saturation

摘要

Considering a discrete-time linear parameter-varying systems with input constraints, this article deals with the codesign of a parameter-dependent state-feedback controller and a new parameter-dependent event-triggering mechanism. Two independent event-triggering policies are introduced at the sensor node to economize the limited network resources. They indicate whether the current state or the current scheduling parameters should be transmitted to the controller or not. In this sense, the controller scheduling parameters can differ from those of the system, yielding a certain degree of robustness concerning parameter deviations. Sufficient conditions, given in terms of linear matrix inequalities, ensure the regional asymptotic stability of the closed loop. To formulated them, we use the Lyapunov theory along with the generalized sector condition. Moreover, we formulate a convex optimization procedure indirectly reducing the transmission activity over the network. The proposed methodology effectiveness is attested through numerical examples and comparisons with related works from the literature.