Comments on "Observability of Switched Linear Systems: Characterization and Observer Design"

Aneel Tanwani, Hyungbo Shim, Daniel Liberzon

Research output: Contribution to journalReview articlepeer-review


This note points out certain limitations of our results from the paper mentioned in the title, and provides a modified approach to overcome these limitations. Specifically, the observer design addressed in the aforementioned paper is, in general, only applicable to switched linear systems with invertible state reset maps and this note presents a modified algorithm for state estimation that can also handle non-invertible state reset maps. In the process, we also identify some equalities from that paper which may not hold in general for arbitrary state reset maps.

Original languageEnglish (US)
Article number7084623
Pages (from-to)3396-3400
Number of pages5
JournalIEEE Transactions on Automatic Control
Issue number12
StatePublished - Dec 2015


  • Control theory
  • observability
  • state estimation
  • switching systems

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Science Applications
  • Electrical and Electronic Engineering


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