Nonlinear control for an uncertain electromagnetic actuator

Flavien Deschaux (1) , Frédéric Gouaisbaut (1) , Yassine Ariba (1)

1 LAAS-MAC - Équipe Méthodes et Algorithmes en Commande

This paper presents the design of a nonlinear control law for a typical electromagnetic actuator system. Electromagnetic actuators are widely implemented in industrial applications, and especially as linear positioning system. In this work, we aim at taking into account a magnetic phenomenon that is usually neglected: flux fringing. This issue is addressed with an uncertain modeling approach. The proposed control law consists of two steps, a backstepping control regulates the mechanical part and a sliding mode approach controls the coil current and the magnetic force implicitly. An illustrative example shows the effectiveness of the presented approach.

Domaines: Systèmes dynamiques [math.DS]; Automatique / Robotique; Electromagnétisme

Flavien Deschaux, Frédéric Gouaisbaut, Yassine Ariba. Nonlinear control for an uncertain electromagnetic actuator. 57th IEEE Conference on Decision and Control (CDC 2018), Dec 2018, Miami, United States. 6p., ⟨10.1109/CDC.2018.8618914⟩. ⟨hal-01868623v2⟩