Study On Configuraion Design And Optimization Method Of Marine Power System

As a complex engineering system of mechanical and electrical equipment, the marine power system design always develops along not only with the progress of modern science and technology but also the modern design method. Continuous exploration and innovation to new ship design theory and method, is a strong driving force to promote the development of ship design. This paper applies configuration design theory and method to make a further research to marine power system design. Based on a more comprehensive analysis on the basis of the the configuration design theory and methods, this paper conducts a research on several key technologies of marine power configuration design, including configuration knowledge representation, the configuration model, configuration optimization and configuration evaluation. This paper mainly is as follows:(1)This paper has analysed the basic theory of configuration design. In view of the main content and means of the marine power system design, this paper puts forward the basic process of marine power system configuration design, builts a ship power system configuration design architecture, and establishes three layer configuration ship power system. In addition, configuration design of marine power system type, configuration design of energy and exhaustive configuration design have been studied in detail.(2) This paper sums up the ship power system configuration knowledge involved in the design process. It focuses on the user demand for ship-based power system and configuration knowledge representation. Given the advantages of ontology such as its good knowledge representation in the field of knowledge expression, its clear concept of hierarchy, and its good and shared availability, this paper puts forward that ontology should be applied to marine power system configuration knowledge expression. User requirement ontology of ship power system is established based on the Protege, providing support for marine power system configuration designing.(3) The relationship between constraint satisfaction problem and marine power system configuration design has been studied. In view of the actual marine power system design, it presents for ship power system the configuration design process based on the constraints. It has established model of configuration design based on constraint for marine power system. Particle swarm algorithm is used for marine power system configuration in order to reduce the search space and improve the solving efficiency.(4) This paper sets both overall performance and life-cycle cost of ship power system as its optimal objects. And purchase costs and delivery time are constraints in process. At the same time, multi-objective particle swarm algorithm is used to optimize configuration so that we can acquire the product configuration optimization examples for meeting configuration constraints and user needs.(5) From the viewpoint of total life cycle, this paper synthesizes ship power system factors such as technology, economy and environmental protection. It also sets up the evaluation index system of ship power system configuration based on total life cycle, and then adopts the evaluation method based on D-S evidence theory. These methods are used to evaluate and compare the ship power system configuration instance, providing the evidence for the selection of instances for the configuration.(6) The paper focuses on the user requirement analysis of ship power system configuration design system, and then offers configuration design of ship power system. This paper has not only realized prototype system development for ship power system configuration design system, but also verified the system with real examples.