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Network-aware design of state-feedback controllers for linear wireless networked control systems

Abstract : We study the problem of stabilizing the origin of a plant, modeled as a discrete-time linear system, for which the communication with the controller is ensured by a wireless network. The transmissions over the wireless channel are characterized by the so-called stochastic allowable transmission intervals (SATI), that is a stochastic version of the maximum allowable transmission interval (MATI). Instead of deterministic transmissions, SATI gives stability conditions in terms of the cumulative probability of successful transmission over N steps. We argue that SATI is well-suited for wireless networked control systems to cope both with the stochastic nature of the communications and the design of energy-efficient communication strategies. Our objective is to synthesize a stabilizing state-feedback controller and SATI parameters simultaneously. We model the overall closed-loop system as a Markov jump linear system and we first provide linear conditions for the stability of the wireless networked control systems in a mean-square sense. We then provide linear matrix inequalities conditions for the design of state-feedback controllers to ensure stability of the closed-loop system. These conditions can be used to obtain both the controller and the SATI. A numerical example is presented to illustrate our results.
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Contributor : Romain Postoyan <>
Submitted on : Monday, March 26, 2018 - 9:58:24 AM
Last modification on : Tuesday, January 21, 2020 - 2:30:03 PM
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André de Oliveira, Vineeth Varma, Romain Postoyan, Irinel-Constantin Morarescu, Jamal Daafouz, et al.. Network-aware design of state-feedback controllers for linear wireless networked control systems. 6th IFAC Conference on Analysis and Design of Hybrid Systems ADHS 2018, Jul 2018, Oxford, United Kingdom. ⟨10.1016/j.ifacol.2018.08.035⟩. ⟨hal-01742808⟩



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