基于本体和事物特性表的定制系统研究

发布时间：2018-04-15 08:01

本文选题：事物特性表 + 变型设计　；参考：《桂林电子科技大学》2017年硕士论文

【摘要】：变型设计应用相似性、重用性和全局性原理对定制产品进行重组,提高已有零件使用率,增加客户选择范围。根据客户定制需求,以批量生产的方式,低价、高质、高效的生产出定制产品。当前较为常用的变型设计方法虽然在一定程度上满足了客户的个性化定制需求,但是在变型设计中对于重用性原理应用的还是不够,并且不能实现产品信息的推理功能。针对上文提到的变型设计重用性应用不够、不能实现推理这两个问题,本文引入事物特性表技术和本体技术。提出本体和事物特性表相结合对产品进行变型设计的方法。分析定制产品并得到其相关参数的事物特性表,建立产品主模型和事物特性之间的关系。用描述逻辑对定制产品的事物特性表进行刻画,建立定制产品事物特性表的语义表示模型。将定制产品的主模型和产品的主结构添加在建好的事物特性表中,对事物特性表进行扩展,利用之前建好的本体对产品相关信息进行推理。本文完成工作分为以下三方面:第一,基于事物特性表技术构建变型设计产品本体知识库。分析变型设计产品的零件组成及零部件之间关系,用网络本体语言对其进行定义;根据产品参数约束关系、装配约束关系、专家经验等相关知识,用语义网规则语言对其进行表示。将产品零件的结构化知识置换为Jess事实,定制产品尺寸约束关系、定制产品装配约束关系等置换为Jess规则,利用Jess推理机对变型设计产品的相关信息进行推理以得到需求信息。通过减速箱齿轮轴实例验证了这一做法的正确性,为实现产品的变型设计提供理论基础。第二,基于本体和事物特性表的变型设计方法。利用本体的知识重用性这一优点,在构建的事物特性表本体基础上,将定制产品的主模型和主结构添加到事物特性表中对其进行扩展,在此基础上构建了导出参数、主模型、主结构等的推理规则。最后,开发了基于本体和事物特性表的定制系统。在前面构建定制产品本体知识库的基础上,构建了定制产品知识库的系统框架。protégé软件和Java程序设计语言相结合,开发基于本体和事物特性表的定制系统,在定制系统中针对变型设计产品实例演示了各项功能操作。
[Abstract]:Based on the principle of similarity, reusability and globality of variant design, custom-made products are reorganized to increase the utilization rate of existing parts and increase the scope of customer selection.According to the customer's custom demand, mass production, low-cost, high-quality, high-efficient production of customized products.Although the commonly used variant design methods to some extent meet the needs of customer customization, but in variant design, the reuse principle is not enough, and the reasoning function of product information can not be realized.In view of the two problems that the reusability application of variant design mentioned above is not enough to realize reasoning, this paper introduces the technology of object characteristic table and ontology.This paper presents a method of product variant design based on ontology and tabular feature table.The relationship between the main model of the product and the characteristics of the product is established by analyzing the list of things characteristic of the customized product and obtaining the relevant parameters.The description logic is used to describe the object characteristic table of custom product, and the semantic representation model of custom product thing characteristic table is established.The main model of customized product and the main structure of product are added to the set of things characteristic table to extend the table of things characteristics and to infer the relevant information of product by using the pre-built ontology.The work of this paper is divided into the following three aspects: firstly, the knowledge base of variant design product ontology is constructed based on the tabular technology of transaction characteristics.This paper analyzes the components composition and the relationship between parts of variant design products, defines them by network ontology language, and according to the relevant knowledge of product parameter constraint relation, assembly constraint relation, expert experience, etc.It is represented by semantic web rule language.The structural knowledge of product parts is replaced with Jess fact, the size constraint relation of product and assembly constraint relation of product are changed into Jess rules, and the relevant information of variant design product is inferred by Jess inference engine to obtain the requirement information.The correctness of this method is verified by an example of gear shaft of reducer box, which provides a theoretical basis for realizing the variant design of the product.Secondly, the variant design method based on ontology and object characteristic table.Taking advantage of the knowledge reusability of ontology, the main model and main structure of customized products are added to the table of things characteristics to extend them on the basis of building the ontology of object characteristics table. On this basis, the derived parameters and main model are constructed.The rules of reasoning for the main structure, etc.Finally, a custom system based on ontology and object characteristic table is developed.On the basis of constructing customized product ontology knowledge base, the system framework of customized product knowledge base. Prot 茅 g 茅 software and Java programming language are combined to develop customization system based on ontology and object characteristic table.In the customization system, the function operation of variant design product is demonstrated.
【学位授予单位】：桂林电子科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP311.52;TP18

【参考文献】