Une approche intrinsèque des observateurs linéaires à entrées inconnues

On donne des conditions necessaires et suffisantes d'existence d'observateurs a entrees inconnues, pour les systemes lineaires invariants, a temps continu ou discret. Une structure generique valable quel que soit le degre relatif est alors propose en monovariable, qui peut etre etendue au multivariable. Deux exemples, dont l'un avec simulations numeriques, sont examines.

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