On emulated nonlinear reduced-order observers for networked control systems

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• 作者：Romain Postoyan^a ; ¹ ; ^{romain.postoyan@cran.uhp-nancy.fr}  ; [Author Vitae] ; Dragan Ne&scaron ; i膰^b ; ^{d.nesic@ee.unimelb.edu.au}  ; [Author Vitae]
• 关键词：Networked control systems ; Observers ; Nonlinear ; Stability
• 刊名：Automatica
• 出版年：2012
• 期刊代码：13_00051098
• 类别：cp
• 出版时间：April, 2012
• 卷：48
• 期：4
• 页码：645-652
• 文件大小：367 K

摘要

We consider a general class of nonlinear reduced-order observers and show that the global asymptotic convergence of the observation error in the absence of network-induced constraints is maintained for the emulated observer semiglobally and practically (with respect to the maximum allowable transmission interval) when system measurements are sent through a communication channel. Networks governed by a Lyapunov uniformly globally asymptotically stable protocol are investigated. Our results can be used to synthesize various observers for networked control systems for a range of network configurations, as we illustrate it by considering classes of immersion and invariance observers which include the circle-criterion observers.