面向关键结构的装配体检索方法

发布时间：2018-03-08 01:30

本文选题：关键结构　切入点：装配体检索　出处：《计算机集成制造系统》2015年05期 　论文类型：期刊论文

【摘要】：针对装配体难以分类检索的问题,提出一种面向关键结构的装配体检索方法。利用装配确定性划分装配体,提出联接结构、运动副结构和装配体结构的概念。根据装配体结构可以包含更基本装配体结构,将装配体结构进一步分解为基本装配体结构和装配体结构单元。讨论了装配体结构单元的定义、分类、分解和判别方法。以装配体结构和装配体结构单元作为装配体的关键结构,以装配体装配结构模型作为评价装配体关键结构相似性的特征,借鉴文本信息检索方法建立关键结构的倒排索引,通过关键结构布尔模型检索装配体,提出中心零部件、拓扑分层模型子结构的概念,以及装配体结构、装配体结构单元标引算法,实现了结构单元的计算机自动识别和高效标引,并以阀杆组件为例验证了方法的有效性。
[Abstract]:In order to solve the problem that assembly retrieval is difficult to classify, a key structure-oriented assembly retrieval method is proposed. According to the concept of motion pair structure and assembly structure, the assembly structure can be further decomposed into basic assembly structure and assembly structure unit according to assembly structure, and the definition of assembly structure unit is discussed. The assembly structure and assembly structure unit are taken as the key structure of the assembly, and the assembly structure model is used as the feature to evaluate the similarity of the key structure of the assembly. Based on the text information retrieval method, the inverted index of key structure is established, and the key structure Boolean model is used to retrieve assembly body. The concepts of central parts, topological hierarchical model substructure and assembly structure are proposed. The assembly structure unit indexing algorithm realizes the automatic identification and efficient indexing of the structure unit, and takes the valve stem assembly as an example to verify the effectiveness of the method.
【作者单位】：绍兴文理学院机电工程系;
【基金】：国家自然科学基金资助项目(51275311)~~
【分类号】：TP391.7;TG95

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