Control strategy for state and input observer design

Gildas Besancon (1, 2) , Iulian Munteanu (1)

1 GIPSA-SYSCO - GIPSA - Systèmes non linéaires et complexité
2 IUF - Institut universitaire de France

In this note, an alternative to classical methods for observer design is discussed, based on a dual control approach: it is indeed highlighted how an observer (at least approximate) can be obtained for a system by designing a control law for an auxiliary copy of this system, so that it tracks the system output. An important ingredient in this approach is the use of high-gain in the control design. The strategy is illustrated by various examples, including the case of unknown input reconstruction.

Domaines: Automatique / Robotique

Gildas Besancon, Iulian Munteanu. Control strategy for state and input observer design. Systems and Control Letters, 2015, 85, pp.118-122. ⟨10.1016/j.sysconle.2015.09.010⟩. ⟨hal-01222876⟩