Unknown input observers for singular systems designed by eigenstructure assignment

Sheng-Fuu Lin*, An Ping Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Scopus citations


In this paper, any unknown input observers with orders between minimum and full orders can be established for singular systems by eigenstructure assignment method. The complete and parametric solutions for the observer matrices and for the generalized eigenvectors are obtained. The completeness and parametric forms of the solutions and the flexibility in selecting the observer order allow the designer to choose a suitable observer according to the control purposes; hence, the solutions are quite suitable for advanced applications.

Original languageEnglish
Pages (from-to)43-61
Number of pages19
JournalJournal of the Franklin Institute
Issue number1
StatePublished - 1 Jan 2003


  • Eigenstructure assignment
  • Observer
  • Parametric solutions
  • Singular system
  • Unknown input

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