摘要
为了解决机械产品数字孪生体演进信息同步的基础技术问题,针对多源异构的演进内容和信任可变的协作背景,提出一种基于区块链的机械产品数字孪生本体模型协同演进方法。通过基于本体的表示和封装技术将模型演进信息转换为标准文本数据,在此基础上设计区块构建方案,结合共识算法同步更新授权网络中的各节点模型,通过基于区块链的分布式存储保证所有建模操作互信可溯,并支持冲突识别和轻量发布。将所提方法应用于直升机某离合器的研发过程,取得了良好的效果。
The digital twin of mechanical products is a dynamic mapping developed by multiple stakeholders in the entire lifecycle,and the synchronization of its model evolution has become an important technical problem that needs to be solved urgently.Considering the multi-source heterogeneous evolution content and the trust-variable collaboration background,a blockchain-based collaborative evolution method for the digital twin ontology model of mechanical products was proposed.The evolution information was converted into standard exchangeable data through ontology-based representation and encapsulation technology.On this basis,the block structure was designed,and the consensus algorithm was used to realize the synchronous update of the model at each node in the authorized network.Through blockchain-based distributed storage,the modeling operations were mutually trusted and traceable.In this method,conflict identification and lightweight publishing were also supported.The evolution process of a clutch in the helicopter was taken as an example to verify the feasibility and effect of the proposed method.
作者
郑孟蕾
田凌
ZHENG Menglei;TIAN Ling(Department of Mechanical Engineering,Tsinghua University,Beijing 100084,China)
出处
《计算机集成制造系统》
EI
CSCD
北大核心
2023年第6期1781-1794,共14页
Computer Integrated Manufacturing Systems
基金
国家自然科学基金资助项目(51675299)
国家重点研发计划重点专项资助项目(2020YFB1709103,2018YFB1700604)
北京市自然科学基金资助项目(3182012)。
关键词
数字孪生
机械产品
模型演进
协同建模
本体模型
区块链
digital twin
mechanical products
model evolution
collaborative modeling
ontology model
blockchain
