作　　者： ; ; ;

机构地区： 华南理工大学

出　　处： 《图学学报》 2014年第2期280-284,共5页

摘　　要： 针对PHANToM Desktop力反馈器工作空间狭小的问题,提出改进的动态空间匹配算法和代理点移出视锥体时的漫游技术。首先分析设备工作空间在三维方向与视锥体的匹配关系,通过对x、y和z轴方向进行空间匹配,实现近视点处操作精度高和远视点处可视范围大;然后利用映射区外的工作空间进行视点漫游,可以扩展虚拟装配可视范围。在虚拟装配过程中,实时地计算代理点与零件间的接触力,并反馈给用户,使用户可以感知零件的几何外形与硬度特性等;同时采取弹簧质点模型计算约束力引导用户进行装配定位。 Since the workspace of PHANToM Desktop is not big enough, an improved method of dynamic space matching and a viewpoint navigation technique whenever the proxy moving outside the frustum are proposed in this paper. Firstly, the three-dimensional space matching is considered when the device space is matched with the view frustum, so that a high operating precision near the viewpoint and a large visual range at the far viewpoint area is implemented. Then the workspace outside the mapping area in device space is elaborately utilized for viewpoint navigation, so the bigger visual range can be obtained. During the virtual assembly process, the contact force computed real-time can be applied to perceive the shape and hardness of virtual objects for users. Additionally, the constraint force generated according to mass-spring model can be used to locate parts.

关 键 词： 虚拟装配 力反馈器 动态空间匹配 漫游 接触力 约束力

领　　域： [自动化与计算机技术] [自动化与计算机技术]