Open AccessLMI‐based passivation of LTI systems with application to marine structures
Author(s) -
Faedo Nicolás,
PeñaSanchez Yerai,
Carapellese Fabio,
Mattiazzo Giuliana,
Ringwood John V.
Publication year - 2021
Publication title -
iet renewable power generation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.005
H-Index - 76
eISSN - 1752-1424
pISSN - 1752-1416
DOI - 10.1049/rpg2.12286
Subject(s) - passivation , lti system theory , control theory (sociology) , linear system , computer science , minimisation (clinical trials) , mathematics , control (management) , mathematical analysis , materials science , layer (electronics) , artificial intelligence , composite material , statistics
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.