On the zeros of blocked linear systems with single and mixed frequency data

Mohsen Zamani*, Wetian Chen, Brian D.O. Anderson, Manfred Deistler, Alexander Filler

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    10 Citations (Scopus)

    Abstract

    This paper studies properties of blocked systems resulting from blocking discrete linear systems with mixed frequency data. The focus is on the zeros of the blocked systems. We first establish results on the simpler single frequency case, where the unblocked linear systems have all data at the same frequency. In particular, an explicit relation between the system matrix of the unblocked linear systems and that of their corresponding blocked systems is derived. Based on this relation, it is shown that the blocked systems are zero free if and only if the related unblocked systems are zero free. Furthermore, it is illustrated that square systems have zeros generically, i.e. for generic parameter matrices, and the corresponding kernel is of dimension one. With the help of the results obtained for the single frequency case, we then identify a situation in which the blocked systems can be zero free.

    Original languageEnglish
    Title of host publication2011 50th IEEE Conference on Decision and Control and European Control Conference, CDC-ECC 2011
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages4312-4317
    Number of pages6
    ISBN (Print)9781612848006
    DOIs
    Publication statusPublished - 2011
    Event2011 50th IEEE Conference on Decision and Control and European Control Conference, CDC-ECC 2011 - Orlando, FL, United States
    Duration: 12 Dec 201115 Dec 2011

    Publication series

    NameProceedings of the IEEE Conference on Decision and Control
    ISSN (Print)0743-1546
    ISSN (Electronic)2576-2370

    Conference

    Conference2011 50th IEEE Conference on Decision and Control and European Control Conference, CDC-ECC 2011
    Country/TerritoryUnited States
    CityOrlando, FL
    Period12/12/1115/12/11

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