Design Selection And Research On Multi-power Combine System

With the rapid development of high technology, lots of theoretical researches involving ship have been getting more sophisticated. During the actual operation process, ship power plant working conditions are inconstant; Environmental influence is significant; Various properties measuring study are very complex; At home and abroad, methods combining with theoretical research, bench testing and shiphoard measurement are being used to study various performances of ship power plant; Researches of multi-power combine system is few; Researches and application of electric ship power system are later in domestic, design and manufacture related having great gap from developed nation; CODAD combined power plant can adapt to the situation of our country; The construction of testing benches was often based on the experience or the requirement of ship-owner, not enough work has be done for making comprehensive programme evaluation scientifically. An important reason for cultivating a person of talant in modem society is better experiment condition, to satisfy the ship development multi-power combine system test bench will be setted up. Here, the fuzzy comprehensive evaluation is brought in to carry on the research for multi-power combine system design selection and optimization.In this paper, multi-power combine system design selection and research is considered as the object, in the design of the development of test bench, the factors taked into account are their functional requirements, design principles, performance indicators, the current development level at home and abroad, and so on. At the basis of the conclusion of the existing design experiences in ship, this paper brings forward different multi-power combine system designs, and sets up an evaluation index system for these projects combing with the characteristics of the test bench, then contraposing evaluation system characteristics, carrys on an investigation into Group AHP Method and the fuzzy comprehensive evaluation methods; Finally, the best design is determined by using comprehensive evaluation method. In addition, several of equipments meet the system requirements are selected.During comprehensive evaluating process, firstly, analytic hierarchy structure model is established to evaluate the multi-power combine system and the categorization of quantified index and qualitative index is finished. Secondly, ameliorative AHP is used to calculate absolute weight of the index in the model. Group AHP Method is adopted to solve the assembled problem, achieving the fusion of experts' opinions. As for the problem of index membership, reasonable membership function is established, by characters analyzing and correlative rules combining. After finishing the calculation of weight and membership, proper fuzzy comprehensive evaluation model is chosen. Using Mat Lab software, the evaluation result is gained. And finally the project selection is completeed.This thesis does another research on the application of fuzzy comprehensive evaluation on marine project selection, in order to provide a scientific method for the selection of multi-power combine system.