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微泵动态特性及优化评价规则的分析与研究
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摘要
微泵是微流动系统的核心部分,是MEMS的重要微型器件,有着巨大的市场前景和发展潜力,被广泛地应用于各个科学领域。但是目前对微泵在动态特性方面的研究存在片面性的问题,还缺乏一定优化评价规则,本文对微泵进行动态特性分析及优化评价规则研究可以为高质量微泵设计提供保障。
    针对微泵的研究现状,采用有限元分析方法,对微泵的动态特性进行分析和研究,建立有限元分析流程和模型,并采用ANSYS软件对参数化动态特性分析程序进行开发;采用粗糙集(Rough Sets)理论对微泵动态特性分析的相关数据进行处理,建立优化决策信息系统,进行属性约简和优化规则提取,其中优化决策信息系统采用决策信息表来表达,属性约简采用基于遗传算法的下三角形矩阵的方法,优化决策规则采用合并归约的方法;在此基础上,利用所开发的微泵动态特性分析和优化规则提取软件对双金属热驱动微泵实例进行动态特性分析和优化规则提取。通过实例分析,验证了方法的可行性和相应的算法、程序可操作性。同时也为双金属热驱动微泵产品优化设计提供了比较全面客观的优化评价依据。
    本文提出的微泵动态特性分析和优化规则提取的方法,在微泵研究领域是一次新的尝试和探索,首次以有限元和粗糙集理论相结合的方法对微泵优化规则进行提取,这一研究成果将弥补微泵产品设计缺乏优化评价规则的缺陷,为微泵产品优化设计奠定了基础;同时,所开发的软件为微泵动态特性分析和优化评价提供了原型工具,利用此软件工具可以对微泵类产品进行动态分析和优化评价,避免了设计的盲目性,提高了设计的效率。
The micro-pump is the core part of the micro-fluid system, and it is a key micro device in the MEMS. It could broadly be applied in every science fields, which has an enormous market and development potential. It is not in the round that the dynamic properties research of the micro-pump, which absence the rules of the optimization and evaluation. The design of the high quality micro-pump can be ensured by the study of the dynamic property of the micro-pump and the rule of the optimization and evaluation in this dissertation.
    According to the status of the micro-pump research, the dynamical property of the micro-pump is analyzed by finite element method (FEM), and the FEM model and analysis flow of the micro-pump are founded, and the dynamic property analysis program using the parameter is developed by use of the ANSYS software in this dissertation. The correlative data of the dynamic property analysis is processed by the rough sets theory, and the information system of the optimization and decision-making is founded, and the reduced attribute and the optimization rule are performed, which the information system of the optimization and decision-making are expressed by the information table and the triangle matrix based on the genetic algorithm is used in the reduced attribute method and the combination and reduction are used in the rule of the optimization and decision-making. The dynamic property analysis and optimization rules of the thermal driven micro-pump are got by the extracting software of the dynamic property analysis and optimization rule of micro-pump, which is developed in the dissertation. It is indicated that the method is the feasibility and the correspond arithmetic and program is operable based on this instance. And it provides a general and impersonal evaluation rule for the optimization design of the thermal
    
    
    driven micro-pump products.
    It is a new method research that the dynamic analysis of the micro-pump and the acquirement of the optimization rule in the dissertation. Combine approach of FEM, rough set theory and GA is used to realize optimization rules of the micro-pump. The research result will make up the lacuna the limitation for optimization rules lack and establish base for micro-pump products optimization. At the same time, the software being developed will provide a prototype tool for the dynamic property analysis of the micro-pump and optimization evaluation. It will avoid the blindness and improve the efficiency.
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