关键词: 虚拟现实, 虚拟装配, 手势导航, 碰撞检测

Abstract: To map the assembly process in virtual environment, a hierarchy architecture of Virtual Assembly (VA) system was advanced. Key technologies of virtual assembly, such as modeling of Virtual Hand (VH), the definition and switching of gesture, the movement control of virtual hand & work piece, the algorithm of real-time collision detection and precise positioning, Graphic User Interface (GUI) and the recording, editing and rebroadcasting of virtual assembly process, were studied and solutions were given. The algorithm of collision detection based on bounding-box & convex compounding and precise positioning of work piece based on both approximate restriction and collision positioning were brought forward so that the runtime was shortened and the efficiency was improved. All theories and algorithms have been widely used in a sort of car air conditioning’s virtual assembly.

Key words: virtual reality, virtual assembly, gesture navigation, collision detection