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Article: Interacting Multiple Model Estimator for Networked Control Systems: Stability, Convergence, and Performance

TitleInteracting Multiple Model Estimator for Networked Control Systems: Stability, Convergence, and Performance
Authors
Issue Date2018
PublisherIEEE. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=9
Citation
IEEE Transactions on Automatic Control, 2018 How to Cite?
AbstractIn this paper, we study the interacting multiple model (IMM) estimator for networked control systems with packet loss but without packet acknowledgment (ACK). The ACK is a signal sent by the actuator to inform the estimator of whether control packets are lost or not. A system with ACK is usually called a TCP-like system; otherwise, it is called a UDPlike system. We show that the stability of the IMM estimator for UDP-like systems is determined by the observation packet arrival rate (p.a.r.) and is independent of the control p.a.r. and control inputs. The IMM estimator is stable if the observation p.a.r. is greater than a critical value. We show that this critical value is the same as the critical value for the stability of the optimal estimator for its corresponding TCP-like system. If control inputs eventually tend to zero, the error covariance of the IMM estimator converges to that of the optimal estimator for TCP-like systems. We characterize the impact of the control/observation p.a.r. and the control input on estimation performance. Finally, we prove that the average estimation performance of the IMM estimator approximates that of the optimal estimator within a finite bound, and is superior to that of the linear minimum mean square error estimator.
Persistent Identifierhttp://hdl.handle.net/10722/256335
ISSN
2017 Impact Factor: 5.007
2015 SCImago Journal Rankings: 4.238

 

DC FieldValueLanguage
dc.contributor.authorLin, H-
dc.contributor.authorLam, J-
dc.contributor.authorChen, MZQ-
dc.contributor.authorShu, Z-
dc.contributor.authorWu, ZG-
dc.date.accessioned2018-07-20T06:33:01Z-
dc.date.available2018-07-20T06:33:01Z-
dc.date.issued2018-
dc.identifier.citationIEEE Transactions on Automatic Control, 2018-
dc.identifier.issn0018-9286-
dc.identifier.urihttp://hdl.handle.net/10722/256335-
dc.description.abstractIn this paper, we study the interacting multiple model (IMM) estimator for networked control systems with packet loss but without packet acknowledgment (ACK). The ACK is a signal sent by the actuator to inform the estimator of whether control packets are lost or not. A system with ACK is usually called a TCP-like system; otherwise, it is called a UDPlike system. We show that the stability of the IMM estimator for UDP-like systems is determined by the observation packet arrival rate (p.a.r.) and is independent of the control p.a.r. and control inputs. The IMM estimator is stable if the observation p.a.r. is greater than a critical value. We show that this critical value is the same as the critical value for the stability of the optimal estimator for its corresponding TCP-like system. If control inputs eventually tend to zero, the error covariance of the IMM estimator converges to that of the optimal estimator for TCP-like systems. We characterize the impact of the control/observation p.a.r. and the control input on estimation performance. Finally, we prove that the average estimation performance of the IMM estimator approximates that of the optimal estimator within a finite bound, and is superior to that of the linear minimum mean square error estimator.-
dc.languageeng-
dc.publisherIEEE. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=9-
dc.relation.ispartofIEEE Transactions on Automatic Control-
dc.rights©2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.-
dc.titleInteracting Multiple Model Estimator for Networked Control Systems: Stability, Convergence, and Performance-
dc.typeArticle-
dc.identifier.emailLin, H: lhzju@hku.hk-
dc.identifier.emailLam, J: jlam@hku.hk-
dc.identifier.authorityLam, J=rp00133-
dc.description.naturepostprint-
dc.identifier.doi10.1109/TAC.2018.2831620-
dc.identifier.hkuros286157-
dc.publisher.placeUnited States-

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