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本体在产品知识S-B-F表达模型中的应用研究 总被引:2,自引:0,他引:2
设计了基于本体的产品知识结构-行为-功能表达模型。根据本体构建原则和方法,结合语义Web的建模语言OWL,论述了模型中流和行为/功能本体的构建,并以齿轮泵为例进行描述。最后给出了应用分析,证明了本体技术在产品知识建模中的实用性。 相似文献
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Zhi Li Xiaowu Zhou W. M. Wang George Huang Zonggui Tian Shaowei Huang 《The International Journal of Advanced Manufacturing Technology》2018,99(9-12):2121-2135
To achieve efficient development of high-quality product, manufacturing constraints must be fully taken into account at the early design stage. However, designers lack in-depth knowledge of manufacturing and production. Many time-consuming iterations of design changes are required between designers and manufacturing engineers. In order to minimize this knowledge gap, this paper presents an ontology-based product design framework for manufacturability verification and knowledge reuse to support the sharing and reuse of design and manufacturing knowledge. It aims at providing advices and feedback of restraints of manufacturing processes to the designers during the design process. The proposed framework consists of three major layers which include a foundation layer, a domain layer, and an instance layer. We use the Web Ontology Language (OWL), a standard of ontology representation language, to formalize the foundation layer. It contains the core product model and the standard ISO 10303 AP224 application protocol. The domain layer comprises extensional concepts and relationships for design and manufacturing integration and a rule base for manufacturability verification, which is represented in Semantic Web Rule Language (SWRL). In the instance layer, an inference engine is developed based on ontology and rule inference. It provides recommendations of manufacturability. Two case studies are provided as application examples to demonstrate the effectiveness of the framework. 相似文献
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基于本体的产品数据交换模型研究 总被引:4,自引:0,他引:4
传统的产品数据模型交换标准不能实现真正意义上的数据共享.为此,分析了该交换标准在数据集成中的应用,指出了传统数据交换方法的不足.在此基础上,讨论了基于本体的产品数据表达与交换,从本体建模的角度重新组织了Web本体描述语言的体系结构,并给出了产品数据交换标准形式化描述语言EXPRESS到Web本体描述语言的映射规则.提出了一个基于本体的产品数据交换模型,以导弹制导系统的数据交换为应用背景,详细描述了基于该模型的产品数据交换过程,并利用Protégé工具对数据交换结果进行了验证. 相似文献
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在偏好的逻辑链表示方法的基础上,提出了使用Web本体描述语言来表达偏好的方法.通过使用Web本体描述语言可以将偏好的表达和推理很自然地结合在一起,而成熟的描述逻辑推理器可保证用Web本体描述语言来表达偏好的实用性.应用偏好算子使用户能够表达复杂的偏好,满足了用户多样化的搜索需求.此外,使用Web本体描述语言还可以增加条件偏好,从而增强偏好的表达能力. 相似文献
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为提高工作流模型在分布式执行过程中的自动化程度.解决语义异构问题,提出了一种基于本体的业务过程执行语言语义标注方法,构建了业务工程执行语言流程树和Web本体描述语言领域本体树.针对业务工程执行语言流程中的每个概念,分别从三个角度计算其与Web本体描述语言领域本体中所有概念之问的语义相似度,并选取与该概念复合相似度最大的概念建立映射关系.通过语义消歧过程.消除业务工程执行语言流程中存在的语义异构,并生成语义消歧树,进而基于一系列映射规则,将语义消歧树转化为Web服务本体描述语言描述的语义工作流模型.最后给出应用实例,并采用F1-measure对所提出的语义消歧方法进行评估. 相似文献
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基于多维度分析的制造资源集成与共享 总被引:4,自引:3,他引:1
为满足网络化制造对制造资源的特殊需求,参考航空工业标准,从生命周期、应用视图和聚合粒度3个方面对制造资源进行多维度分析。利用国际万维网联盟推荐的资源描述方法,对多维度制造资源模型进行了基于网络本体语言的形式化描述,并通过斯坦福大学的本体建模工具构建了制造资源多层次、多视图、全生命周期的网络本体模型。最后,通过惠普语义网络实验室的本体接口函数,完成了制造资源网络本体语言文件与关系型数据库相互转换,实现了网络环境下制造资源工程数据及时有效的共享。 相似文献
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面向流程的企业知识地图及其本体实现 总被引:11,自引:0,他引:11
为解决当前知识管理系统普遍存在的知识管理与组织业务流程缺乏有效结合的问题,实现企业范围内知识资源的集成与协同利用,通过分析知识地图技术及其在企业知识管理中的应用模式,构造了面向流程企业知识地图分层管理模型,提出了基于本体技术及Web本体描述语言的一种模型实现方法,并通过应用实例验证了模型的有效性。该模型在实现企业范围内知识集成和协同的同时,也为协同商务环境下组织间知识的协同管理创造了条件。 相似文献
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To obtain accurate and reliable results of finite element analysis (FEA) requires a high level of expertise and the full-scale
physical context information, which are bottlenecks restricting the application of achievements of FEA in industry. This paper
proposes an ontology-based framework including a hierarchy transfer approach and a three-stage automated finite element analysis
method to solve these problems. The hierarchy transfer approach is proposed to create different transfer formats according
to the data, information, and knowledge, to carry out the integration at different levels. The knowledge found in design and
FEA theories is presented by ontology in order to uniformly describe the physical phenomenon with the same semantic meanings.
This involves the development of a shared design and FEA ontology, as well as, specific application ontologies in the Ontology
Web Language (OWL). The three-stage automated finite element analysis method is applied to mark up artifact in problem definition,
to reuse domain knowledge in problem formulation, and to enable the automation of the FEM analysis process in the solution
routine with the application of AI techniques. The feasibility and effectiveness of the framework and concepts are empirically
validated by a case study. 相似文献
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基于STEP的XML特征建模方法研究 总被引:4,自引:0,他引:4
针对网络环境下产品数据的交换与共享,为实现产品信息的统一表达和网络传输、建立产品信息的网络化通用模型以及提高产品信息的后处理性,提出了基于产品模型数据交换标准的可扩展标记语言特征建模方法。首先,在详细分析产品模型数据交换标准特征框架的基础上,分解产品结构,并将其映射为相应的产品特征,完成产品信息的特征表达,建立完整的特征模型;然后,确定产品特征由EXPRESS到可扩展标志语言的映射规则和方法、可扩展标记语言特征建模框架和过程以及可扩展标记语言文档的解析与网络实现等,从而实现产品信息在网络环境下的产品信息传输、交换和共享。最后,通过Internet信息服务管理器平台建立了该方法的应用实例。 相似文献
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Bin He Peien Feng 《The International Journal of Advanced Manufacturing Technology》2013,66(5-8):645-662
Conceptual design is an early stage of the whole product development process, which involves the generation of solutions to satisfy the design requirements. It is a crucial issue on how to find proper principle solutions from enormous, isomeric, and even distributed knowledge resources repositories and then ally with these correlative distributed knowledge resources providers to collaborative conceptual design. Design is a task-solving process using corresponding resource, so it does not always have an agency in product design. This paper proposes a model of collaborative conceptual design based on distributed knowledge resources, which is centered on design tasks and based on dynamic knowledge alliance without agency. After a model of knowledge resource unit and a model of Web services based on knowledge resource are proposed, a virtual quantitative and qualitative knowledge resource representation based on knowledge grid is then put forward. The mixed knowledge resource repository is also proposed to support collaborative conceptual design. The strategies of knowledge register, publish, storage, reorganization, orientation, and problem solving based on mixed knowledge resource repository are then discussed in detail. The data exchange mode of principle solutions is then described. The selection strategy of dynamic knowledge alliance members is established. The framework of distributed knowledge resource is also put forward to support collaborative conceptual design. The process of collaborative conceptual design based on distributed knowledge resource is then proposed. The conceptual design of new devices for decreasing resistance of amphibious vehicles is given as an example, which demonstrates that the methodology is obviously helpful to produce valuable principle solutions with distributed knowledge for product innovation. 相似文献
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为解决企业互操作中信息共享与重用问题,提出了一种基于规则集和对象关系数据库的企业互操作本体构造方法.首先给出了企业互操作的本体构造模型,然后依据该模型提出了从对象关系数据库构造本体的四类规则,并给出了相应的形式化定义和Web本体描述语言.使用该四类规则可以分别构造出本体的类、属性、属性特征和属性约束四类要素.实验表明,该方法是可行且高效的,与关系数据库构造本体的方法相比减少了约18%的构造时间.将该方法实际应用到企业互操作平台中,取得了良好效果. 相似文献
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面向造型设计的知识表示 总被引:1,自引:0,他引:1
针对目前人工智能技术在造型知识表达上的不足,提出了一种面向造型设计的知识表示法。以分层约束满足为基础,用多类谓词、拓扑限定、不确定性描述等方法使复杂的造型设计对象和过程得以清蜥描述。通过将复杂的空间模型以结构分解和拓扑分解的方法离散为线性域,使用空间对象的变形映射为点的丝性移动,从而使正向的造型过程和逆向的回溯过程都能沿可控路径自动进行。分析了设计知识表达的关键点,阐述了面向造型设计的知识表示法细节,结合一个分模设计的实例设计了空间推理过程,并给出了详细的结果数据。 相似文献
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基于装配特征本体表达的虚拟产品建模研究 总被引:1,自引:0,他引:1
在借鉴元对象工具思想的基础上,给出了装配特征的本体表达框架。采用四层元数据体系表达装配特征,并用网络本体语言描述装配特征本体信息。基于上述表达框架,提出了面向虚拟产品的全息语义模型。给出了模型数据的存储结构以及模型信息的重组算法。最后,通过应用实例验证了所提出的理论和方法。 相似文献