Optimal Ship Design and Simulator Development Using Systems Identification Techniques

9362135船舶系统设计中的Duraiswami优化是一个问题，如果制定和解决得当，将会产生巨大的经济影响。然而，该问题不能简单地归结为一个经典的单目标优化问题。在船舶系统设计中，必须满足相当多的准则，其中一些准则只能用模糊的术语来表示。在模拟/模拟船舶操纵性时尤其如此，模拟器的适当性只能通过咨询船长/引航员来判断。为了建立一个成功的船舶模拟器，必须对船舶运动方程进行辨识。这个系统辨识问题是不适定的。在拟议的研究中，我们解决了开发一个优化设计框架的问题，通过将船舶动力学的数学模拟和实时识别纳入程序中。不适定问题将使用多个物理约束/目标来表示，并通过帕累托最优解来解决。实现我们的理论和算法的高效计算机程序将被开发出来。第一阶段的研究将开发一个廉价的原型船舶操纵模拟器，基于简单的PC架构。在未来阶段，所开发的工具将用于开发优化舰船系统设计的程序，并用于辅助舰船决策。

9362135 Duraiswami Optimization in ship system design is a problem which, if properly formulated and solved, would have great economic impact. However, the problem cannot be easily cast mathematically as a classical single objective optimization problem. In ship system design a considerable number of criteria must be satisfied of which some can only be formulated in fuzzy terms. This is particularly true in modeling/simulating ship maneuverability, where the adequateness of a simulator can only be judged by consulting a ship master/pilot. To build a successful ship simulator, the equations of ship motion must be identified. This systems identification problem is ill-posed. In the proposed research we tackle the problem of developing a framework for optimizing design, by incorporating in the procedure the mathematical simulation and identification of ship dynamics in real time. The ill-posed problem will be formulated using multiple physical constraints/objectives, and solved via pareto- optimization. Efficient computer programs implementing our theory and algorithms will be developed. Phase I research will develop an inexpensive prototype ship maneuvering simulator, based on simple PC architectures. In future phases the developed tools will be used to develop procedures for optimal ship system design, and in assisting shipboard decision making.