Unknown input observer for linear time-delay systems

• Gang Zheng ^[1] ; Francisco Javier Bejarano ^[2] ; Wilfrid Perruquetti ^[1] ; Jean-Pierre Richard ^[1]
  1. [1] CRIStAL, CNRS UMR ;Ecole Centrale de Lille, France
  2. [2] SEPI, ESIME Ticomn, IPN;Mexico City, Mexico
• Localización: Automatica: A journal of IFAC the International Federation of Automatic Control, ISSN 0005-1098, Vol. 61, 2015, págs. 35-43
• Idioma: inglés
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• Resumen

  • This paper investigates an unknown input observer design for a large class of linear systems with unknown inputs and commensurate delays. A Luenberger-like observer is proposed by involving only the past and actual values of the system output. The required conditions for the proposed observer are considerably relaxed in the sense that they coincide with the necessary and sufficient conditions for the unknown input observer design of linear systems without delays.