Journal of Systems Engineering and Electronics ›› 2006, Vol. 17 ›› Issue (3): 606-610.doi: 10.1016/S1004-4132(06)60104-7

• CONTROL THEORY AND APPLICATION • Previous Articles     Next Articles

Design of unknown input observer with H^ performance for linear time-delay systems

Fu Yanming, Wu Di, Zhang Peng & Duan Guangren
  

  1. Center for Control Theory and Guidance Technology, Harbin Inst. of Technology, Harbin 150001, P. R. China
  • Online:2006-09-25 Published:2006-09-25

Abstract:

A unknown input observer (UIO) design for a class of linear time-delay systems when the observer error can't
completely decouple from unknown input is dealt with A sufficient condition to its existence is presented based on Lyapunov stability method Design problem of the proposed observer is formulated in term of linear matrix inequalities. Two
design problems of the observer with internal delay and without internal delay are formulated Based on He control theory
in time-delay systems, the proposed observer is designed in term of linear matrix inequalities (LMI). A design algorithm is
proposed The effective of the proposed approach is illustrated by a numerical example.

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