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This paper investigates the unknown input estimation for a large class of linear systems with commensurate delays. A Luenberger-like observer plus a high order sliding mode differentiator are proposed by involving only the past and actual values of the system output. Sufficient conditions are given to guarantee the existence of such an unknown input estimator.
This paper investigates an unknown input observer design for a large class of linear systems with unknown inputs and commensurate delays. An impulsive finite-time observer is proposed by involving only the past and actual values of the system output. Sufficient conditions are given to guarantee the existence of such an impulsive finite-time observer.
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