基于框架的虚拟装配系统研究

根据框架理论构建虚拟装配系统，将典型装配过程性知识封装到过程框架中并在系统中保存。系统采用场景匹配的方式来捕获用户的交互意图，提高了系统的认知能力。以匹配成功的过程框架引导装配活动，并根据框架中规定的动作和时机来完成装配件的精确定位，有效克服了操作者通过交互设备对装配零件运动控制不精确的问题。

Research on Virtual Assembly System Based on Framework

A virtual assembly system is constructed according to frame theory.The process frame encapsulates knowledge about typical assembly processes that is a kind of data structure and saved in the system.A method of assembly scene matching is presented to perceive user’s intention,which enhances the perception ability of the virtual assembly system to a large extent.The system makes use of the matching process frame to guide the following assembly process.The part is located precisely by implementing actions at the time that are described in the matching process frame.The problem is resolved effectively which is difficult to control the motion of the assembling parts precisely with current virtual reality I/O devices during virtual assembly.