原文传递
Optinization of Furface Shin Steering
in Sea State
| 题名： | Optinization of Furface Shin Steering in Sea State |
| 作者： | Eniranuel Horianoooulos |
| 关键词： | Computer models of the ship, Nomoto model. Regular seas,Optimized controller. Irregular seas, Minimization subroutine,Adantive control |
| 摘要： | Propulsion losses are increased by added drag due to steering of the ship. A carefullv designed automatic steering control provides the desired heading while it simultaneously minimizes the rudder activity and holds the potential for reducing propulsive losses.A computer model of the SL-7 containership along with a cascaded controller (one pole, one zero) were coupled to a function minimization subroutine and a sea state generator program. This scheme provided the appropriate controller parameter. in order to accomplish the best performance. The model was tested in calm waters and sea states (regular and irregular) as well, for a certain speed and different encounter wave angles and encounter frequencies. Also, an adaptive control v-as studied which updates the controller parameters while either the environmental conditions or the ship’s steering characteristics chance in order to maintain optimal steering performance. |
| 报告类型： | 科技报告 |
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