铲式播种机数字化设计实例检索策略研究  

Retrieval Strategy of Spade Punch Planter for Digital Design Case

作　　者：李成华[1] 杨宇[2] 张晓冬[2] 张国梁[3] 

机构地区：[1]沈阳理工大学机械工程学院,沈阳110168 [2]沈阳农业大学工程学院,沈阳110161 [3]河北农业大学林学院,保定071000

出　　处：《农业机械学报》2010年第8期31-34,55,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金资助项目(50575148)

摘　　要：在基于实例推理的机械系统数字化设计过程中,实例的检索策略和检索方法对于检索的有效性和可靠性具有决定性影响。结合面向对象的实例表达方法,研究实例检索过程中机械零部件特征属性相似度的确定方法,提出将模糊数学、灰色关联分析应用到特征属性相似度的计算中。引入层次分析法和基于相似度离差信息方法确定特征属性的组合权重。以铲式播种机设计为例,验证了所提出的实例检索算法具有良好的实例分辨能力和检索成功率。In the procedure of digital design of machinery system based on case-based reasoning （CBR）,retrieval strategy and method of case had decisive influence on validity and reliability of retrieve. Combined with object-oriented case representation approach,determination method for resemblance level of machinery parts characteristics during case retrieval procedure was analyzed,fuzzy mathematics and grey relational analysis methods were introduced into calculation of resemblance level of characteristics properties. Combination weight for characteristic properties of the machinery parts was determined through hierarchy analysis process and deviation information method based on similarity values. The case retrieval calculation method had high discernment and verified successfully through design procedure of spade punch planter.

关 键 词：铲式播种机 数字化设计 设计实例 检索方法 

分 类 号：TP391[自动化与计算机技术—计算机应用技术] S223.2[自动化与计算机技术—计算机科学与技术]