Explicitly representing the semantics of composite positional tolerance for patterns of holes

Explicitly representing the semantics of composite positional tolerance for patterns of holes
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显式表示孔图案的复合位置公差的语义

DOI:
10.1007/s00170-016-9457-8
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发表时间:
2016-10
影响因子:
3.4
通讯作者:
Jiang Xiangqian
Jiang Xiangqian
中科院分区:
工程技术3区
文献类型:
--
作者:
Qin Yuchu;Lu Wenlong;Qi Qunfen;Li Tukun;Huang Meifa;Scott Paul J.;Jiang Xiangqian

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表示两个或多个容差的交互的语义(即,在计算机辅助公差设计(CAT)中,将公差(组合公差)的信息明确地表达出来,使其计算机可理解,是目前一项具有挑战性的任务。最近,我们提出了一种基于描述逻辑(DL)本体的方法来完成这项任务。在本文中,复合位置公差(CPT)的孔(POH)的模式的语义表示作为一个例子来说明所提出的方法。该表示方法主要包括:用DL术语公理表示POH CPT的结构知识;用Horn规则表示约束知识;用DL断言公理描述个体知识。通过Web本体语言(OWL)和语义Web规则语言(SWRL)实现的表示,CPT本体的开发。由于OWL和SWRL基于逻辑的语义,该本体具有明确的计算机可理解的语义。工程实例表明,这种语义可以自动检查CPT信息的一致性,推理出新知识,实现CPT信息的语义互操作。受益于此,本体提供了一个语义丰富的模型,从CAD/CAM系统中提取的CPT信息。
Representing the semantics of the interaction of two or more tolerances (i.e., composite tolerance) explicitly to make them computer-understandable is currently a challenging task in computer-aided tolerancing (CAT). We have proposed a description logic (DL) ontology-based approach to complete this task recently. In this paper, the representation of the semantics of the composite positional tolerance (CPT) for patterns of holes (POHs) is used as an example to illustrate the proposed approach. This representation mainly includes representing the structure knowledge of the CPT for POHs in DL terminological axioms; expressing the constraint knowledge with Horn rules; and describing the individual knowledge using DL assertional axioms. By implementing the representation with the web ontology language (OWL) and the semantic web rule language (SWRL), a CPT ontology is developed. This ontology has explicitly computer-understandable semantics due to the logic-based semantics of OWL and SWRL. As is illustrated by an engineering example, such semantics makes it possible to automatically check the consistency, reason out the new knowledge, and implement the semantic interoperability of CPT information. Benefiting from this, the ontology provides a semantic enrichment model for the CPT information extracted from CAD/CAM systems.
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