基于可视化技术的再制造发动机装配过程监测与控制研究

发布时间：2018-06-18 22:29

本文选题：再制造 + 装配过程　；参考：《合肥工业大学》2016年硕士论文

【摘要】：再制造产品质量难以满足消费者期望是再制造产业规模化、市场化发展的关键约束之一。再制造装配作为再制造工程的最后一个环节,也是关键环节,对保障再制造产品质量和性能起到至关重要的作用。而装配过程工艺复杂、资源繁多、信息多源异构等因素又导致再制造装配呈现诸多不确定性,进而影响了装配的稳定性和可靠性。因此,如何在不确定性环境下,实时监测和控制再制造装配过程,确保“再制造产品质量不低于新品”,已经成为再制造工程亟需解决的关键问题之一。本文以再制造发动机为研究对象,分析了再制造发动机的工艺流程,阐述了再制造装配过程的不确定性内涵。在此基础上,对装配资源进行分类并采用基于本体的建模方法进行描述,结合基于规则映射的信息集成模式,构建了多源异质信息的同构化处理环境,为实时感知、监测和控制装配过程不确定性提供一致性的语义环境。其次,在信息同构化环境的基础上,分析了信息采集的关键技术,通过定义装配过程的实体对象,形式化地描述信息感知过程。同时,构建了再制造装配过程状态空间模型并给出了装配工位的误差补偿机制,揭示了装配误差的传递、累积和耦合过程。然后,结合面向对象的思想,构建了装配资源的可视化概念模型,并形式化地定义了模型中的对象数据模型、算法模型、可视表征模型和交互控制模型,进而给出了可视化建模步骤。在此基础上,构建了再制造发动机装配过程实时监测与控制平台,并详细阐述了平台的体系架构、功能结构、运行机理和数据库结构。最后,在上述理论和方法的指导下,在分析平台软件架构和硬件架构的基础上,开发原型系统,验证了系统的有效性和可行性,也为再制造装配过程监测与控制提供方法和技术支持。
[Abstract]:The difficulty of remanufacturing product quality is one of the key constraints for the development of scale and marketization of remanufacturing industry. As the last link of remanufacturing engineering, remanufacturing assembly is also a key link, which plays a vital role in ensuring the quality and performance of remanufactured products. However, many factors, such as complex assembly process, various resources and heterogeneous information, lead to many uncertainties of remanufacturing assembly, which affect the stability and reliability of assembly. Therefore, how to monitor and control the remanufacturing assembly process in a uncertain environment and ensure that "the quality of the remanufactured product is not lower than the new product" has become one of the key problems that need to be solved in the remanufacturing engineering. This paper takes the remanufacturing engine as the research object, analyzes the process flow of the remanufacturing engine, and expounds the uncertainty connotation of the remanufacturing assembly process. On this basis, the assembly resources are classified and described by ontology based modeling method. Combined with the information integration model based on rule mapping, the isomorphic processing environment of multi-source heterogeneous information is constructed, which is real-time aware. Monitoring and controlling assembly process uncertainty provides a consistent semantic environment. Secondly, on the basis of information isomorphic environment, the key technology of information collection is analyzed, and the information perception process is described formally by defining the entity object of assembly process. At the same time, the state space model of remanufacturing assembly process is constructed, the error compensation mechanism of assembly station is given, and the transfer, accumulation and coupling process of assembly error are revealed. Then, the visual conceptual model of assembly resources is constructed, and the object data model, algorithm model, visual representation model and interactive control model are formally defined. Then the visual modeling steps are given. On this basis, a real-time monitoring and control platform for remanufacturing engine assembly process is constructed, and the architecture, functional structure, operation mechanism and database structure of the platform are described in detail. Finally, under the guidance of the above theories and methods, a prototype system is developed on the basis of analyzing the software architecture and hardware architecture of the platform, which verifies the effectiveness and feasibility of the system. It also provides method and technical support for remanufacturing assembly process monitoring and control.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TK406

【相似文献】