State and unknown input estimation for linear discrete-time systems

Authors:	Floquet Thierry, Ecole Centrale de Lille, France Barbot Jean-Pierre, ENSEA, France
Topic:	1.2 Adaptive and Learning Systems
Session:	Optimal and Adaptive Control
Keywords:	Estimation, discrete-time linear systems, unknown inputs

Abstract

This paper deals with a new type of estimator for discrete-time linear systems with unknown inputs. A constructive algorithm is given in order to analyze the state observability and the left invertibility of the system (i.e the possibility to recover the unknown inputs with the outputs) and then an estimator is designed.