A method to design a new type of metamaterial is presented. A two-step strategy to define an optimal long-range force distribution embedded in an elastic support to control wave propagation is considered. The first step uses a linear quadratic regulator (LQR) to produce an optimal set of long-range interactions. In the second step, a least square passive approximation of the LQR optimal gains is determined. The paper investigates numerical solutions obtained by the previously described procedure. Finally, we discuss physical and engineering implications and practical use of the present study.
Optimal control theory based design of elasto-magnetic metamaterial / Pensalfini, S.; Coppo, F.; Mezzani, F.; Pepe, G.; Carcaterra, A.. - In: PROCEDIA ENGINEERING. - ISSN 1877-7058. - ELETTRONICO. - 199:(2017), pp. 1761-1766. (Intervento presentato al convegno 10th International Conference on Structural Dynamics, EURODYN 2017 tenutosi a Rome; Italy nel 2017) [10.1016/j.proeng.2017.09.443].
Optimal control theory based design of elasto-magnetic metamaterial
Pensalfini, S.;Coppo, F.;Mezzani, F.;Pepe, G.;Carcaterra, A.
2017
Abstract
A method to design a new type of metamaterial is presented. A two-step strategy to define an optimal long-range force distribution embedded in an elastic support to control wave propagation is considered. The first step uses a linear quadratic regulator (LQR) to produce an optimal set of long-range interactions. In the second step, a least square passive approximation of the LQR optimal gains is determined. The paper investigates numerical solutions obtained by the previously described procedure. Finally, we discuss physical and engineering implications and practical use of the present study.| File | Dimensione | Formato | |
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