| 在机检测中STL格式自然二次曲面特征参数的提取 |
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| 引用本文： | 郑惠江,王太勇,何改云,郝永江. 在机检测中STL格式自然二次曲面特征参数的提取[J]. 天津大学学报(自然科学与工程技术版), 2010, 43(4) |
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| 作者姓名： | 郑惠江 王太勇 何改云 郝永江 |
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| 作者单位： | 天津大学天津市先进制造技术与装备重点实验室,天津,300072 |
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| 基金项目： | 国家高技术研究发展计划(863计划)，教育部高等学校博士学科点专项科研基金 |
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| 摘 要： | 根据工件的几何特征及其参数进行测量轨迹规划是在机检测系统中重要的环节之一.为了从STL(stereo lithographic)文件中提取出其所描述的工件模型的几何特征及参数,给出了一种针对其数据文件格式特点的自然二次曲面特征参数提取新方法.该方法首先根据三角面片法向量在高斯球面的映射图像判定自然二次曲面几何特征,然后将快速聚类法和Gauss-Newton法相结合,对STL文件中坐标点进行几何特征参数的计算.计算实例表明,该算法能够稳定、准确地提取出自然二次曲面的几何特征参数.
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| 关 键 词： | 在机检测 高斯映射 自然二次曲面 特征参数提取 |
Characteristic Parameter Extraction of Natural Quadric Surface in STL Format for On-Machine Verification |
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| ZHENG Hui-jiang,WANG Tai-yong,HE Gai-yun,HAO Yong-jiang. Characteristic Parameter Extraction of Natural Quadric Surface in STL Format for On-Machine Verification[J]. Journal of Tianjin University(Science and Technology), 2010, 43(4) |
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| Authors: | ZHENG Hui-jiang WANG Tai-yong HE Gai-yun HAO Yong-jiang |
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| Affiliation: | ZHENG Hui-jiang,WANG Tai-yong,HE Gai-yun,HAO Yong-jiang(Tianjin Key Laboratory for Advanced Manufacturing Technology , Equipment,Tianjin University,Tianjin 300072,China) |
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| Abstract: | The trajectory planning of measurement according to the geometric features and their parameters of work pieces is one of the important steps in OMV(on-machine verification)system.In order to extract the geometric features and their parameters of work models described in STL(stereo lithographic)files,a new method for characteristic parameter extraction,which is suitable for the STL format,has been put forward.In this method,the geometric features of natural quadric surface were first identified according to ... |
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| Keywords: | on-machine verification Gauss mapping natural quadric surface characteristic parameter extraction |
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