融合装配场景及人的认知的移动三维装配工艺信息构建和传递方法研究

Whether the assembly activities of complex product can be successfully accomplished with high quality and efficiency greatly depends on the rational construction and effective delivery of the assembly process information to the assembly field. Currently, it has not merged the complete information about assembly scene during the building process of the 3D assembly process information. Therefore, assembly operators cannot comprehensively perceive the real assembly scene, so that it is not beneficial to the accurate understanding of the assembly process information. Meanwhile, the cognitive state of the assembly operators has not been taken into account during the delivery process of the assembly process information, hence it would cause overloaded physical and mental burden on assembly operators. Consequently, assembly operators are unable to precede the assembly work at their best state. ..This project intends to investigate the methodology for mobile 3D assembly process information construction and transfer by merging assembly scene and human cognition. The association and mapping mechanism between assembly scene elements is established based on ontology in order to explore the merging mechanism of assembly scene, so that the mobile assembly process information can be constructed containing the information of assembly scene. The cognitive laws lying in the assembly activities are analyzed based on cognitive psychology. And it provides an effective way to uncover the influencing mechanism of human cognition to the performance of assembly activities. On the basis of these analysis and research, 3D assembly process information can be transferred to assembly field adapted to the cognitive state of assembly operators. This research will provide the theoretical and methodological support for effective transfer of the definition information of a product to the assembly stage in the product development life cycle, and is expected to improve the assembly quality and efficiency of complex product. It is of great scientific significance and application value.

装配工艺信息的合理构建及有效传递，对指导复杂产品装配活动高质高效的完成具有重要意义。现有三维装配工艺信息构建过程中未融合完整的装配场景信息，使装配人员无法全面感知真实装配空间的信息，不利于其对装配工艺信息的准确理解；装配工艺信息传递过程中未考虑装配人员的认知状态，易造成装配人员过重的体力智力负荷，不利于其以最佳的状态进行装配工作。.针对以上问题，本项目拟开展融合装配场景及人的认知的移动三维装配工艺信息构建和传递方法研究。基于本体理论建立装配场景要素间的关联映射机制，探索装配场景的融合机理，构建融合装配场景的移动三维装配工艺信息；基于认知心理学，揭示人在装配活动中的认知规律，分析人的认知对装配活动执行效果的影响机制，实现自适应于装配人员的三维装配工艺信息的推送。项目的研究为实现产品设计信息在装配阶段的有效传递提供理论和方法支撑，有望提高复杂产品的装配质量和效率，具有重要的科学意义和应用价值。

复杂产品的装配一般被认为是典型的离散型装配，即具有零组件数量庞大且形状不规整、装配操作空间狭小、以手工装配作业为主以及较高移动性等特点，目前大部分装配工作的实施是现场装配人员根据纸质的二维装配工艺信息文件手工完成。研究三维装配工艺信息的合理构建及有效传递，对指导复杂产品装配活动高质高效的完成具有重要意义。现有三维装配工艺信息构建过程中未融合完整的装配场景信息，使装配人员无法全面感知真实装配空间的信息，不利于其对装配工艺信息的准确理解；而装配工艺信息传递过程中未考虑装配人员的认知状态，易造成装配人员过重的体力智力负荷，不利于其以最佳的状态进行装配工作。..针对以上问题，本项目开展融合装配场景及人的认知的移动三维装配工艺信息构建和传递方法研究。主要研究面向复杂产品虚拟装配过程的动态装配体简化方法，支持复杂产品的三维装配工艺设计过程，并为后续三维装配工艺信息的组织和构建提供输入；研究融合装配场景的三维装配工艺信息构建方法，使装配人员全面感知真实装配空间的信息；研究考虑人的认知的三维装配工艺信息推送方法，使三维装配工艺信息的推送自适应于装配人员的认知状态，降低出错返工几率。..通过研究，实现了基于图论的装配特征保持、外观保持的动态装配体简化；建立了装配场景要素（装配对象、装配工具、装配操作）之间的关联映射，实现了装配场景在三维装配工艺信息中的融合；获得了装配人员在复杂产品手工装配过程中认知状态的变化规律，并实现了自适应于装配人员的三维装配工艺信息的推送。..项目的研究为在基于MBD的复杂产品研制模式下，三维装配工艺信息的合理组织表达及向装配现场的传递提供新思路，实现集成完整产品定义信息的三维模型，作为单一数据源在复杂产品研制生命周期中装配阶段的有效传递；同时对逐步老龄化的社会中人力资源的可持续利用至关重要。