G^2连续的截面数据重构  

Reconstruction of G^2 Continuous Cross Sectional Data

作　　者：刘栋[1] 张旭[1] 金龙[1] 冯兴辉[1] 

机构地区：[1]上海工程技术大学机械工程学院,上海201620

出　　处：《轻工机械》2015年第6期14-17,21,共5页Light Industry Machinery

基　　金：国家自然科学基金(51205246)

摘　　要：针对特征间G^2连续约束条件难于满足,导致截面重构质量不理想的问题,提出了一种有效的G^2连续截面数据重构方法。文章重点研究圆弧特征与自由特征间边界约束为G^2连续的截面数据重构。优先重构圆弧特征,然后基于边界G^1连续约束模型重构自由特征;插入最优节点,微调控制点满足严格G^2连续约束条件。实例表明该方法能够保证截面重构质量,缩短截面重构周期。从而解决包含圆弧与B样条曲线的截面特征重构问题。Due to G^2 continuity between the features difficult to meet in reverse engineering,resulting in sectional reconstruction poor accuracy,an effective method of adding G^2 continuity was proposed.This paper focuses on the sectional data reconstruction of arc features and free features in G^2 continuous.Priority to accurately reconstruct the arc,then based on G^1 continuous reconstruct free feature;insert the optimal node and slightly adjust control points to meet the G^2 continuous strictly.Examples show that this method can guarantee the quality section reconstruction,greatly shorten the period of reconstruction,so as to solve the problem of the reconstruction of the cross section of the circular arc and B spline curve.

关 键 词：逆向工程 截面数据重构 G2连续 特征 约束 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]