Study of Virtual Factory in Shipbuilding

本课题的研究工作已经进行了3年，基于这样的考虑，造船的整个生产过程是有效的数字化。研究结果如下：（1）探讨了将“泛在化”和数字化生产应用于造船过程的基本思路，并对三维CAD的生产模拟、可穿戴计算机的应用、RFID的应用等进行了研究。（2）研究了船舶生产过程的优化，对船舶生产调度和生产管理进行了有效的改进。应用的技术有禁忌搜索法、模拟退火法、分支定界法等。（3）从生产的核心是人的观点出发，以焊接作业、起重作业、交通通道等狭窄区域为例，运用人机工程学和生物力学进行作业评价。（4）从生产精度的角度出发，对焊接和气体加热两种方式下钢板的变形进行了模拟。研究了考虑鲁棒性的质量控制系统。

The research had been carried out for 3 years, based on such consideration that the whole production processes of the shipbuilding are effectively digitized. Results of the study are as follows ;(1)Basic idea for the application of "ubiquitous" and digital production to shipbuilding process was examined, and production simulations using three-dimensional CAD, application of wearable computer, application of RFID, etc. were studied.(2)The optimization of the ship production process was studied to the scheduling and production management for efficient improvement. Applied techniques were taboo search method, simulated annealing (SA) method, branch and bound method, etc.(3)From the viewpoint that a core of the production is a human, work evaluation had been carried out using ergonomics and biomechanics, for welding work, lifting job, traffic access in the narrow division as an example.(4)Concerning the production accuracy, the deformation of steel plates by welding and gas heating was simulated. The quality control system considering the robustness was also studied.