中国机械工程
中國機械工程
중국궤계공정
CHINA MECHANICAl ENGINEERING
2015年
14期
1926-1931,1937
,共7页
机械零件%三维模型检索%骨架提取%灰色关联分析%相似度
機械零件%三維模型檢索%骨架提取%灰色關聯分析%相似度
궤계령건%삼유모형검색%골가제취%회색관련분석%상사도
mechanical part%3D model retrieval%skeleton extraction%grey correlation analysis%sim-ilarity degree
提出了一种将模型骨架和灰色关联分析相结合的机械零件三维模型检索方法。首先简化机械零件三维模型，忽略倒圆、倒角、孔等附加特征，得到无中空结构的连贯模型；然后基于电场法提取简化后的机械零件三维模型的骨架，所提取的骨架表达了零件模型的形状和拓扑结构特征，并将骨架转换成特征曲线；最后运用灰色关联分析方法计算特征曲线的相似关联度，从而得到机械零件三维模型的相似度。实例验证和实验分析表明，该方法能准确地检索出相似的机械零件三维模型。
提齣瞭一種將模型骨架和灰色關聯分析相結閤的機械零件三維模型檢索方法。首先簡化機械零件三維模型，忽略倒圓、倒角、孔等附加特徵，得到無中空結構的連貫模型；然後基于電場法提取簡化後的機械零件三維模型的骨架，所提取的骨架錶達瞭零件模型的形狀和拓撲結構特徵，併將骨架轉換成特徵麯線；最後運用灰色關聯分析方法計算特徵麯線的相似關聯度，從而得到機械零件三維模型的相似度。實例驗證和實驗分析錶明，該方法能準確地檢索齣相似的機械零件三維模型。
제출료일충장모형골가화회색관련분석상결합적궤계령건삼유모형검색방법。수선간화궤계령건삼유모형，홀략도원、도각、공등부가특정，득도무중공결구적련관모형；연후기우전장법제취간화후적궤계령건삼유모형적골가，소제취적골가표체료령건모형적형상화탁복결구특정，병장골가전환성특정곡선；최후운용회색관련분석방법계산특정곡선적상사관련도，종이득도궤계령건삼유모형적상사도。실례험증화실험분석표명，해방법능준학지검색출상사적궤계령건삼유모형。
A 3D model retrieval method of mechanical parts was proposed combined skeleton and grey correlation analysis.Firstly,3D model of mechanical parts was simplified to get a coherence mod-el without hollow structure by ignoring additional features of model,such as fillet,chamfer and hole etc.Then the skeleton was extracted,which expressed shape and topology features of the parts model from simplified 3D model of mechanical parts based on the electric field method;and the skeleton was converted into characteristic curve.Finally,calculating the similarity degrees among characteristic curves and grey correlation analysis method was used to obtain similarity degrees of parts.Through the example verification and experimental analyses,the method can accurately retrieve the similar 3D model of mechanical parts.
