Archivio Istituzionale della RicercaThe motion of a Wave Energy Converter (WEC) can be described in terms of a particular integro-differential equation, which involves a convolution product accounting for the radiation forces. This convolution term has a computational and a representational drawback both for simulation, and for analysis/design of control strategies. This study presents an application case of a method to obtain a parametric model of the force-to-motion dynamics and/or the radiation force convolution term, based on recent advances in moment-matching. This allows the computation of a model that exactly matches the frequency response of the original system at a chosen set of frequencies, while enforcing specific physical properties of the device. (C) 2018, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.
Moment-Matching-Based Identification of Wave Energy Converters: the ISWEC Device / Faedo, Nicolas; Peña-Sanchez, Yerai; Ringwood, John V.. - 51:(2018), pp. 189-194. (Intervento presentato al convegno 11th IFAC Conference on Control Applications in Marine Systems, Robotics, and Vehicles (CAMS)) [10.1016/j.ifacol.2018.09.491].
Moment-Matching-Based Identification of Wave Energy Converters: the ISWEC Device
Faedo, Nicolas;
2018
Abstract
The motion of a Wave Energy Converter (WEC) can be described in terms of a particular integro-differential equation, which involves a convolution product accounting for the radiation forces. This convolution term has a computational and a representational drawback both for simulation, and for analysis/design of control strategies. This study presents an application case of a method to obtain a parametric model of the force-to-motion dynamics and/or the radiation force convolution term, based on recent advances in moment-matching. This allows the computation of a model that exactly matches the frequency response of the original system at a chosen set of frequencies, while enforcing specific physical properties of the device. (C) 2018, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.
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https://hdl.handle.net/11583/2988075