面向装配序列规划的装配本体设计

Assembly Ontology for Assembly Sequence Planning

为提高装配序列规划的自动化程度,实现装配相关活动间信息的共享、重用和顺畅传递,实现装配序列规划系统与其它异构系统之间的无缝集成和互操作,将本体技术引入到装配建模中.针对装配序列规划建模需求,构建面向装配序列规划且基于装配对象的装配本体(OWL-ASP).OWL-ASP由Properties本体、Assembly Info本体和Assembly Seq本体组成,分别描述装配对象的装配属性、装配信息、装配顺序等.在OWL-ASP的基础上,利用语义Web规则语言刻画装配规则,形成统一的装配知识表示层次体系,实现对装配知识的严格刻画和自动推理.通过球阀装配的实例说明装配本体和装配规则的有效性.

The ontology technology is introduced into the assembly modeling to improve the automation degree of the assembly sequence planning, realize the information sharing, reusing and transferring in related activities of the assembly, and implement the seamless integration and mutual operation between the assembly sequence planning system and other heterogeneous systems. Aiming at the modeling demand of the assembly sequence planning, the assembly sequence planning-oriented and assembly object-based assembly ontology named web ontology language for assembly sequence planning （OWL-ASP） is constructed. The OWL-ASP consists of Properties ontology, Assemblylnfo ontology and AssemblySeq ontology and they describe the assembly properties, assembly information and assembly sequence of the assembly object, respectively. Based on OWL-ASP, the rules for assembly are depicted with the semantic web rule language （SWRL） to form the unified hierarchical system for assembly knowledge representationand realize the strict depiction and automated reasoning of the assembly knowledge. Effectiveness of the proposed ontologies and rules for assembly is illustrated through a practical example of ball valve assembly.