虚拟加工环境中的工件动态建模方法研究  

Dynamic Modeling of Machinable Workpiecein the Virtual Manufacturing Environment

作　　者：罗亚波[1] 陈定方[2] 肖田元[1] 

机构地区：[1]清华大学自动化系国家CIMS工程技术研究中心,北京市海淀区清华园100084 [2]武汉理工大学智能制造与控制研究所,武汉市和平大道1040号430063

出　　处：《武汉大学学报（信息科学版）》2003年第2期238-241,共4页Geomatics and Information Science of Wuhan University

基　　金：中国博士后科学基金资助项目 (中博基 2 0 0 2_17);武汉市重大科技攻关基金资助项目 ( 2 0 0 110 0 10 0 3);国家"863"计划CIMS主题资助项目 ( 2 0 0 1AA411330 )

摘　　要：提出并实现了基于平面纹理映射的基元立方体构造方法 ,以之为动态结点建立了动态八叉树结构 ,实现了支持变精度动态建模的自相似递归算法。该算法确保离正在加工的部位更近的区域有更高的精度 。This paper proposes a novel dynamic octree structure to overcome the difficulty of the machinable workpiece modeling that virtual manufacturing is facing.First,The elementary geometry unit constructed with projected planes,which is used to construct the dynamic octree structure,is represented.Second,the self_similitude recursion algorithm is represented to realize a dynamic model with variable levels of detail,namely,there is a higher level of detail where is closer to the part of being machined.Finally,a model of machinable workpiece integrated into a virtual manufacturing environment is constructed,which is coded in C ++ Builder and OpenGL.

关 键 词：虚拟制造 八叉树结构 碰撞检测 动态建模 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TP391.9[自动化与计算机技术—控制科学与工程]