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1. 发明申请

WO0038117B1 METHOD AND SYSTEM FOR A VIRTUAL ASSEMBLY DESIGN ENVIRONMENT 审中-公开
标题翻译：虚拟装配设计环境的方法和系统
公开(公告)号：WO0038117B1
公开(公告)日：2000-09-21
申请号：PCT/US9930753
申请日：1999-12-23
申请人： UNIV WASHINGTON , NAT INST OF STANDARDS & TECH , JAYARAM SANKAR , JAYARAM UMA , WANG YONG , TIRUMALI HRISHIKESH , CHANDRANA HIRAL , CONNACHER HUGH , LYONS KEVIN , HART PETER
发明人： JAYARAM SANKAR , JAYARAM UMA , WANG YONG , TIRUMALI HRISHIKESH , CHANDRANA HIRAL , CONNACHER HUGH , LYONS KEVIN , HART PETER
IPC分类号： G06T19/00 , G06T17/40
CPC分类号： G06T19/20 , G06T2210/21 , G06T2219/2004 , G06T2219/2008
摘要： The invention provides a virtual assembly design environment (VAE) that can simulate axial and planar constrained motion for multiple parts in any combination and application order. Each sequence of assembly operations can be recorded and stored for later usage. A guidance mechanism may be employed by a user to assist in performing the assembly operations. Dynamic simulation methods may be used to simulate object behavior in the VAE using physical laws and collision detection algorithms. The physical properties of the parts can be created in a separate CAD system (including mass properties). In the invention, physical property information is transferred from the CAD system to a virtual reality environment where it is used in dynamic simulations. The parts behave realistically in the user's hand, constrained on the base part, or moving freely in space. A swept volume can be generated directly in the CAD system which is more accurate and compact than those created using numerical methods and can be easily processed by CAD systems. A swept volume trajectory editing mechanism has been implemented. Real time bi-directional data transfer between the VR environment and the CAD system has been achieved. The user can perform parametric design modifications in the virtual environment through a CAD system.
摘要翻译：本发明提供了一种虚拟装配设计环境（VAE），其可以以任何组合和应用顺序模拟多个部件的轴向和平面约束运动。装配操作的每个顺序都可以被记录并存储以供以后使用。用户可以使用指导机制来辅助执行组装操作。动态仿真方法可用于使用物理定律和碰撞检测算法来模拟VAE中的对象行为。零件的物理属性可以在单独的CAD系统中创建（包括质量属性）。在本发明中，物理属性信息从CAD系统转移到虚拟现实环境中，在虚拟现实环境中用于动态模拟。这些部件在用户的手中表现得真实，限制在底座部分上，或者在空间中自由移动。扫描体积可以直接在CAD系统中生成，比使用数值方法创建的更精确和更紧凑，并且可以通过CAD系统轻松处理。扫描音量轨迹编辑机制已经实施。 VR环境和CAD系统之间的实时双向数据传输已经实现。用户可以通过CAD系统在虚拟环境中执行参数化设计修改。

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