Unknown input observer for linear time-delay systems. (November 2015)

• Record Type: Journal Article
• Authors: Zheng, Gang; Bejarano, Francisco Javier; Perruquetti, Wilfrid; Richard, Jean-Pierre
• Is Part Of: Automatica. Volume 61(2015)
• Page Start: 35
• Page End: 43
• Publication Date: 2015-11
• Subjects: Delay systems -- Commensurate delays -- Observer -- Unknown inputs; Automatic control -- Periodicals; Automation -- Periodicals; 629.805
• DOI: 10.1016/j.automatica.2015.07.029
• Languages: English
• ISSNs: 0005-1098

Abstract

Abstract: 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.