| 聂博林，张旭，车选林.逆向工程中回转体碎片旋转轴提取方法研究[J].轻工机械,2017,35(2):11-15 |
| 逆向工程中回转体碎片旋转轴提取方法研究 |
| Extraction Methord of Rotation Axis on Solid of Revolution Fragments in Reverse Engineering |
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| DOI：10.3969/j.issn.1005-2895.2017.02.003 |
| 中文关键词: 逆向工程 回转体碎片 旋转轴 方向矢量 蛮力搜索算法 |
| 英文关键词:reverse engineering rotating body fragments rotation axis direction vector brute force searching algorithm |
| 基金项目:国家自然科学基金资助项目(51205246)；浙江省自然科学基金项目(Y1100073) |
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| 中文摘要: |
| 针对目前回转体碎片特征提取精度不高问题，提出了一种回转体碎片旋转轴估算方法。通过计算主方向的方向
矢量，得到纬圆上主方向的方向矢量；通过计算若干对任意2点纬圆主方向上方向矢量的外积，去除粗大误差得到旋转
轴矢量的方向范围；然后根据垂直于旋转轴的平面与回转面相交交线是一个圆的几何准则，利用蛮力搜索算法得到回转
体点云碎片的旋转轴，通过模式搜索对旋转轴进行了优化。最终得到了一个比较理想的旋转轴。文中提出的算法通过
大量实验论证鲁棒性好，并且在保证效率的基础上，提取出的轴精确度较高。 |
| 英文摘要: |
| For the current fragmentation feature extraction accuracy of the rotating body is not high , a estimation method
of the rotation axis of the rotor debris was proposed. By calculating the direction of the main direction vector, the main
direction of the direction vector was obtained on the latitude circle. By calculating a number of outer product between any
two points on the latitude circle and removing the gross error, the vector direction range of the rotation axis was given.
According the geometric criteria that the vertical to the rotation axis surface and the intersecting plane intersection line is a
circle , the point cloud of rotation axis debris was obtained by the use of brute force searching algorithm, and the search
pattern by rotating shaft was optimized. An ideal axis of rotation was gotten. Through a lot of experiments the algorithm
demonstrates that the robustness is well, and the extracted axis has high accuracy on the basis of ensure the efficiency. |
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