Parametric model identification of high-speed craft dynamics

✍ Scribed by Rocío Muñoz-Mansilla; Joaquín Aranda; José Manuel Díaz; J de la Cruz

• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 935 KB
• Volume: 36
• Category: Article
• ISSN: 0029-8018
• DOI: 10.1016/j.oceaneng.2009.05.007

✦ Synopsis

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.