基于框架的虚拟装配运动引导  

Frame-Based Motion Guidance for Virtual Assembly

作　　者：吴昌盛[1] 汪代勇[1] 代英明[2] 赵瑛锋[3] 蒲如平[1] 

机构地区：[1]中国工程物理研究院机械制造工艺研究所,绵阳621900 [2]绵阳职业技术学院计算机科学系,绵阳621900 [3]中国工程物理研究院计算机应用研究所,绵阳621900

出　　处：《计算机辅助设计与图形学学报》2010年第6期997-1003,共7页Journal of Computer-Aided Design & Computer Graphics

基　　金：中国工程物理研究院科学技术发展基金(2007B06001);中国工程物理研究院预研课题(60373000)

摘　　要：为了在交互式装配过程中精确地定位零件模型,提出一种基于框架的装配运动引导方法.该方法将典型装配过程性知识封装到过程框架中,将蕴藏在零件模型B-rep中的工程信息封装到特征框架中,与场景匹配引擎一起构成框架系统;框架系统采用场景匹配的方式来捕获操作者的装配意图(即匹配成功的过程框架),由匹配成功的过程框架来引导装配运动,并由过程框架中规定的动作和时机来完成装配件的精确定位.应用实例结果表明,文中方法有效地克服了操作者通过交互设备对装配零件运动控制的不精确性问题.For purpose of locating part model precisely in a virtual environment,this paper presents a motion guidance method based on frame theory.A process frame encapsulates knowledge about typical assembly processes,and relevant engineering information in the parts＇ B-rep models is transformed to the feature frames which describe part structure from the assembly view.A frame-based system is composed of the process frames,the feature frames and an assembly scene matching engine.Manipulator＇s assembly intentions are perceived by the scene matching engine.The system makes use of the matched process frames to guide the assembly process.The parts are located precisely by implementing actions that are described in the matched process frame.Application results show that the problem of controlling the motion of the assembled parts precisely with current virtual reality I O devices during virtual assembly is resolved effectively.

关 键 词：虚拟装配 运动引导 框架理论 装配场景匹配 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]