Robustness of observability of linear systems

  • Xiao Ming Wang*
  • , Hu Tao Cui
  • , Ping Yuan Cui
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The robustness of observability is studied for linear systems under nonlinear perturbations in the state dynamics and the output channel. For time-invariant linear systems, it is shown that the observability will be locally preserved if the perturbations have the property of higher order infinitesimal. Further, this result is extended to time-varying linear systems, which demonstrates the validity of linearization for observability analysis of nonlinear systems. Two numerical examples are given to illustrate the presented result.

Original languageEnglish
Pages (from-to)286-290
Number of pages5
JournalJilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition)
Volume39
Issue numberSUPPL. 1
Publication statusPublished - Mar 2009
Externally publishedYes

Keywords

  • Automatic control technology
  • Linear systems
  • Observability
  • Perturbation
  • Robustness

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