Unknown input observers designed by eigenstructure assignment

  • Authors:

  • Sheng-Fuu Lin;An-Ping Wang

  • Affiliations:

  • Department of Electrical and Control Engineering, National Chiao Tung University, 1001 Ta Hsueh Road, Hsinchu, Taiwan 30050, ROC;Department of Electrical and Control Engineering, National Chiao Tung University, 1001 Ta Hsueh Road, Hsinchu, Taiwan 30050, ROC and Department of I.M., Ling Tang College, Taichung, Taiwan, 408, R ...

  • Venue:
  • Systems Analysis Modelling Simulation - Some recent progress in systems research and applications
  • Year:
  • 2002

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Abstract

A simple and direct method for full-order unknown input observer design is proposed. The procedure is straightforward and no further complex conditions are needed, provided that the solutions exist. The solutions for the observer matrices and for the eigenvectors are represented in parametric forms. Owing to the parametric forms of the solutions, more properties of the observer such as robustness, eigenvalue sensitivity and minimum gain can be considered. The existence condition of the observer is also established.