FUZZY DEDUCTION OPTIMIZATION ON THE FLOW PARAMETERS OF MULTI-OBJECTIVE PEMFC

• Main Authors: Ping-Jung Yang, 楊秉融
• Other Authors: Ming-yung Wang
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/22387138400893465615

碩士 === 大同大學 === 機械工程學系(所) === 97 === Parameter of the multi-quality is most suitable in the control question, is everlasting in the highly complex misalignment relations, and between the parameter and the quality the mutual influence is complex, often must the massive redundant operations be able to achieve by the test installation; Of because the multi-quality parameter most suitable is really not easy, this research designation proton exchange membrane fuel cell is a topic, take the inlet temperature, the inlet pressure, the incoming flow speed as the controlling element, the conformity fuzzy meaning analysis and ideal solution similar order by chance law (TOPSIS), discusses the parameter to control to influences of quality goal and so on outlet temperature, outlet pressure, pressure drop, because of does not operate after the experiment, uses the meaning deduction way, develops a set of most suitable control mechanism. This research first constructs the quality and the factor the relevance, by fuzzy analytic method, comparative external analysis each quality; Applied to the Taguchi orthogonal arrays further, take the fuzzy theory as the foundation, according to triangle membership function definition, to individual quality establishment meaning rule, after use gravity model approach solution fuzzy, quantification of value discussion quality, and by ideal solution similar order by chance method conformity multi-quality characteristic, so as to gains the fuzzy meaning the most suitable control design; Further penetrates COMSOL Multiphysics software simulation, compares intermediate quantity of combination with each controlled variable scope, then the plan is the Taguchi orthogonal arrays , by modelling, analysis, compared to multi-qualities “fuzzy deduction most suitable control plan” feasibility; And carries out 27th the items total divisor entire standard ( ) the modelling, confirms validity of this research. The findings showed that the meaning experiment obtained most suitable parameter combination and the modelling only have a difference when the speed of flow, the reason lies in the meaning experiment, is between the conformity multi-quality balanced solution (the most suitable relations), therefore has this difference, because of this research results, not can only develop quality of decision scheme a set of meaning, uses in the misalignment, and in the high order of complexity's question, can penetrate the meaning way which cannot test, the gain “pan-with the deduction type most suitable plan”, guaranteed that the quality and the experiment efficiency, may raise elevate competitive power of the science and technological undertakings development, and economizes the cost effectively, provides set of economies and the perspective The multi-qualities are most suitable the control plan, meets demand of the practice.