1. Parametric model identification of high-speed craft dynamics
- Author
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Muñoz-Mansilla, Rocío, Aranda, Joaquín, Díaz, José Manuel, and de la Cruz, J
- Subjects
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HIGH-speed machining , *ENGINEERING instruments , *ENGINEERING models , *SYSTEM analysis , *PARAMETER estimation , *SYSTEM identification , *APPROXIMATION theory - Abstract
Abstract: Parametric models of heave, pitch and roll dynamics of a high-speed craft have been estimated for different wave incidence angles in the frequency domain. Several issues that make the identification problem interesting are the following: type of parameterization, starting values, non-quadratic functions, excitation signals and short data record. The method employed guarantees a fine linear approximation of the nonlinear dynamics of a fast ship for the ultimate goal of stabilization control to reduce motion sickness associated with heave, pitch and roll accelerations. In addition, the approach achieves high-quality starting values and avoids non-quadratic terms in the cost function, which results in less computational load and significantly more accurate models when compared with a previous method employed for the same problem. [Copyright &y& Elsevier]
- Published
- 2009
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