虚拟现实技术-虚拟装配环境的构建

虚拟现实技术是一种有效的模拟人在自然环境中视、听、动等行为的高级人机交互技术。近年来，随着相关设备和技术的迅速发展，虚拟现实技术在各个领域得到广泛的应用，虚拟装配就是虚拟现实技术在制造业中的一个重要应用。本文主要探讨虚拟装配环境的构建过程，介绍了常用交互设备和以WTK工具包为代表的虚拟环境软件开发平台，重点分析了虚拟环境中的装配模型，比较两种主要的装配模型：关系模型和层次模型的结构及优缺点，提出了带约束图的结构树模型，并给出五元组结构来描述该模型中的节点。

The Construction of Virtual Assembly Environment in Virtual Reality

Virtual Reality is an advanced Human-Computer Interaction technology, e ffectively simulating human beings' actions such as seeing, listening and moving in the natural environment. In recently years, with the development of relative devices and technologies, virtual reality is widely applied to many different f ields. So virtual assembly is a most importance application of virtual reality i n manufacturing. The author mainly introduces the construction of virtual assemb ly environment, common interactive devices and virtual environment developing pl atforms represented by WTK toolkit. Then deeply analyze assembly model to compar e two main types of assembly models: relational model and hierarchical model, pr esenting a hierarchical tree model with constraint graph, through quintuple to d escribe the node of the tree model.