Unknown input observer: a physical approach
Résumé
The object of this paper is the study of a new unknown input observer for linear models. This new observer has some classical restrictive conditions proposed for other ones: infinite structure condition and Hurwitz conditions for invariant zeros. The main contribution are twofold: this new observer has the same state space representation as the initial state model and it is shown to be very accurate. Simulation results are proposed for a DC motor example with analysis of two other classical methodologies.