Stabilisability and Detectability in Networked Control

S Longo, G Herrmann, P Barber

Research output: Contribution to journalArticle (Academic Journal)peer-review

9 Citations (Scopus)


The authors reconsider and advance the analysis of controllability and observability (and the weaker stabilisability and detectability properties) of a class of linear networked control systems (NCSs). The authors model the NCS as a periodic system with limited communication where the non-updated signals can either be held constant (the zero-order-hold case) or reset to zero. Periodicity is dealt with the lifting technique. The authors provide conditions for controllability (stabilisability) and observability (detectability) of the NCS, given a communication sequence and the controlled plant model. These conditions allow to find communication sequences which are shorter than previously established. A strict lower bound for the sequence length is given. In the sampled-data case, the authors prove that a communication sequence that avoids particularly defined pathological sampling rates and particular eigenvalues can preserve stabilisability (and detectability for the dual problem) with a `minimum' sequence length.
Translated title of the contributionStabilisability and Detectability in Networked Control
Original languageEnglish
Pages (from-to)1612 - 1626
Number of pages15
JournalIET Control Theory and Applications
Publication statusPublished - Sept 2010

Bibliographical note

Publisher: IET


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