With the development of China's aerospace,the increasing number of spacecrafts launches,and the rising demand for shape memory alloy hold-down and release mechanisms for spacecrafts,it is urgent to establish a digital and intelligent production line tailored to the production characteristics of spacecraft products.In this paper,according to the production characteristics of spacecraft shape memory alloy hold-down and release mechanisms,three digital twin models were proposed:the product digital twin model,equipment digital twin model and manufacturing process digital twin model in the manufacturing process of spacecraft mechanisms.The functional module of the digital twin workshop was designed,and a process balancing method of the production line based on industrial engineering(IE)and genetic algorithms was proposed.Furthermore,an information integration and application prototype system based on the digital twin was developed,along with the development of digital twin service interfaces and human-machine interfaces.An automated,digital,and intelligent production line has been established,achieving the information integration and application of digital twins of spacecraft mechanisms,equipment and processes.This has enabled synchronous operation and real-time interaction between virtual and real workshops,significantly boosting the production capacity of spacecraft shape memory alloy hold-down and release mechanisms.
关键词
数字孪生/生产线/平衡/航天器机构/遗传算法
Key words
digital twin/production line/balance/spacecraft mechanisms/genetic algorithm
维普
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