M. Lazar: Averaged controllability in a long time horizon

We extend the recently introduced notion of averaged controllability for parameter dependent systems [1,2]. The goal is to design a control independent of the parameter that steers the averaged of the system to some prescribed value in time T>0 but also keeps the averaged at this prescribed value for all times t>T. This new notion we address as long-time averaged controllability.

We consider finite dimensional systems and provide a necessary and sufficient condition for this property to hold. Once the condition is satisfied, one can apply a feedback control that keeps the average fixed during a given time period. We also address the L2-norm optimality of such controls. Relations between the introduced and previously existing different control notions of parameter dependent systems are discussed, accompanied by numerical examples.

This is a joint work with Jérome Lohéac, University of Lorraine.

[1] M. Lazar and E. Zuazua: Averaged control and observation of parameter-depending wave equations. C. R. Acad. Sci. Paris, Ser. I 352(6) (2014) 497—502.
[2] E. Zuazua: Averaged Control. Automatica 50(12) (2014) 3077–3087.

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