A Matlab Tool for Frequency-Domain Identification of Radiation-Force Models of Ships and Offshore Structures:
This is an independent Matlab toolbox for parametric identification of fluid-memory models associated with the radiation forces ships and offshore structures. Radiation forces are a key component of force-to-motion models used in simulators, motion control designs, and also for initial performance evaluation of wave-energy converters.
The software described provides tools for preparing non-paramatric data and for identification with automatic model-order detection. The identification problem is considered in the frequency domain.
The toolbox includes two demos:
- Identification of fluid-memory models using infinite-frequency added mass. This is intended for 3D hydrodynamic codes like WAMIT where infinite-frequency added mass is computed by solving a boundary value problem.
- Estimation of the infinite-frequency added mass together with the fluid-memory model. This is particular useful for 2D hydrodynamic codes like ShipX (VERES) that do not provide the infinite-frequency added mass.
Perez, T. and T. I. Fossen (2009). A Matlab Tool for Parametric Identification of Radiation-Force Models of Ships and Offshore Structures. Modelling, Identification and Control, MIC-30(1):1-15. doi:10.4173/mic.2009.1.1
Copyright © 2004-2013 Thor I. Fossen and Tristan Perez - E-mail: email@example.com