Abstract

The International Thermonuclear Experimental Reactor (ITER) is one of the largest international cooperative projects with many participants from different research groups in institutes and universities all over the world and is expected to achieve nuclear fusion energy output and to be operated in steady state with tritium self-sufficiency. The conventional design of the ITER-type facility always directly faces challenges of operation difficulties in the assembly and maintenance processes considering that there are collision interference and corresponding precision problems within the constrained space; consequently, it is not possible to provide for research purposes qualitative information for human intuition and quantitative contents with professional advice. Therefore, it is necessary to find a better solution for researchers and operators to get a highly efficient group-based work form without being blocked for reasons of geography. In this context, virtual reality technology has been introduced in the digital assembly and maintenance training platform of the ITER-type mock-up at the Institute of Modern Physics, Chinese Academy of Sciences, and it has many useful features, including real-time collision detection in assembly tasks with simplified trigger mesh structures by means of the ray-casting method, and three-dimensional visualization of the topological structure in the welding and brazing maintenance using the UV unwrapping and remapping methods considering the conversion process from digital values to gray-scale texture, which can meet the flexible and diverse design requirements and provide feasibility of training at the University of Chinese Academy of Sciences.

摘要

国际热核实验反应堆（ITER）是最大的国际合作项目之一，来自世界各地的研究所和大学的不同研究小组的许多参与者，有望实现核聚变能输出并在氚自稳定状态下运行。 -充足。考虑到在受限空间内存在碰撞干扰和相应的精度问题，ITER型设施的常规设计在组装和维护过程中总是直接面临操作困难的挑战；因此，不可能为研究目的提供人类直觉的定性信息和具有专业建议的定量内容。所以，有必要为研究人员和操作人员找到更好的解决方案，以获得高效的基于团队的工作形式，而不会因地理原因而被阻止。在此背景下，中科院近代物理研究所ITER型样机数字化装配与维修培训平台引入了虚拟现实技术，具有实时碰撞等诸多实用功能。通过射线投射方法在具有简化触发网格结构的装配任务中进行检测，以及使用考虑从数字值到灰度的转换过程的 UV 展开和重新映射方法对焊接和钎焊维护中的拓扑结构进行三维可视化。鳞片纹理，