Construction of design support system with high-speed and high-accuracy force feedback in immersive virtual reality system

本研究的目的是利用虚拟现实技术构建一个直观的设计支持系统。构建了以计算机图形学方式显示物体的设计支持系统，并对物体间的干涉进行了高速度、高精度的计算。最后，该系统向用户提供与干扰量相对应的伪力。我们不仅将该系统应用于物体之间的干扰，而且还应用于电磁场分布的表示。由于目前还没有研究电磁场的表示方法，因此我们采用力表示法来观察局部现象，并针对所提出的系统开发了电磁场的数值模拟程序。

The purpose of this study is to construct a intuitive design support system using virtual reality. We constructed the design support system which displays objects by CG (computer graphics) and calculates the interference among these objects at high speed and high accuracy. Finally this system provides users pseudo force corresponding the amount of the interference.We applied this system to not only the interference among objects, but also representation of electromagnetic field distribution. The method of representing electromagnetic field has not been researched, therefore we applied force representation to observe in local phenomena.Further, we developed numerical simulation code of electromagnetic field by Finite-difference time-domain method for the proposed system.