Virtual reality and system simulation are two different and internally related conceptions. The internal relation forms their intersection. Virtual simulation based on the intersection has new characteristics and highlights. It combines the strongpoint of virtual reality and system simulation. So it has become a hot research field and has broad and bright application perspectives.How to apply virtual reality technology to system simulation has been studied thoroughly in this paper. The applicability and limitation of applying virtual reality to system simulation has been analyzed. And graphic modeling technology has been proposed as the medium of this application. The theory foundation and key technology of combining virtual reality technology and graphic modeling technology and applying them to system simulation has been discussed in this paper. The developed system has been applied to process industry system simulation.The study and development of the system is based on the Graphic Modeling System for Process Dynamic Analysis, which was developed by the author. Based on this system, virtual simulation scene system based on VRML has been implemented. In this paper, the architecture and function modules are introduced in detail, and the difficulties and solutions in the process of developing the systems are also been discussed thoroughly. |