Due to the inherent relevance of passive (physically representative) models for control, state-estimation, and motion simulation in the field of marine systems, in this paper, an optimisation-based approach to passivation of linear time-invariant (LTI) systems is proposed with application to physically consistent dynamical modelling of marine structures. In particular, the presented strategy is based upon the introduction of a suitably designed perturbation, computed via minimisation of a linear objective subject to a specific set of linear matrix inequalities (LMIs). The performance of the passivation technique is showcased in terms of two case studies: An offshore platform, with a frequency-domain response computed by means of hydrodynamic codes, and a 1:20 scale wave energy converter (WEC), is characterised in terms of real experimental data.

LMI-based passivation of LTI systems with application to marine structures / Faedo, N.; Pena-Sanchez, Y.; Carapellese, F.; Mattiazzo, G.; Ringwood, J. V.. - In: IET RENEWABLE POWER GENERATION. - ISSN 1752-1416. - 15:14(2021), pp. 3424-3433. [10.1049/rpg2.12286]

LMI-based passivation of LTI systems with application to marine structures

Faedo N.;Carapellese F.;Mattiazzo G.;
2021

Abstract

Due to the inherent relevance of passive (physically representative) models for control, state-estimation, and motion simulation in the field of marine systems, in this paper, an optimisation-based approach to passivation of linear time-invariant (LTI) systems is proposed with application to physically consistent dynamical modelling of marine structures. In particular, the presented strategy is based upon the introduction of a suitably designed perturbation, computed via minimisation of a linear objective subject to a specific set of linear matrix inequalities (LMIs). The performance of the passivation technique is showcased in terms of two case studies: An offshore platform, with a frequency-domain response computed by means of hydrodynamic codes, and a 1:20 scale wave energy converter (WEC), is characterised in terms of real experimental data.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2944012