| 基于点特征的直角坐标系空间直线度偏差评价 |
| Evaluation of spatial straightness deviation in Cartesian coordinate system based on point features |
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| 中文摘要: |
| 目前直角坐标系下空间直线度偏差评价尚未形成统一的方法，针对此问题，提出了基于点特征的直角坐标系空间直线度偏差评价方法。利用空间直线度偏差测量模型与点特征间的关系，以直角坐标系下空间直线度测量方法为基础，建立空间直线度偏差评价数学模型。在截面测量法的基础上，建立空间直线度偏差测量模型。基于空间任意对称二次曲线数学方程，构建最小二乘测量截面轮廓曲线，解决被测截面轮廓中心获取的问题。根据模型点特征关系，最终实现对空间直线度偏差的准确评价。通过实际测试验证了所提出方法的合理性与准确性，为推动空间直线度精密测量技术发展提供了有力支撑。 |
| 英文摘要: |
| The unified evaluation method of spatial straightness deviation in Cartesian coordinate system has not been established at present. For the situation, an evaluation method of spatial straightness deviation in Cartesian coordinate system based on point features is proposed in this paper. Using the relationship between the spatial straightness deviation measurement model and the point characteristics, and based on the spatial straightness measurement method in Cartesian coordinate system, the mathematical models for the spatial straightness deviation evaluation in Cartesian coordinate system are established. On the basis of the cross-section measurement method, the measurement model of spatial straightness deviation is established. Based on the mathematical equation of arbitrary symmetric quadratic curves in space, the least square measurement section profile curve is constructed to solve the problem of obtaining the center of the measured section profile. Finally, the accurate evaluation of the spatial straightness deviation is realized according to the point characteristic relationship. Moreover, the rationality and accuracy of the proposed method are verified through practical tests, which provides a strong support for promoting the development of spatial straightness measurement technology. |
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| 中文关键词: 空间直线度偏差 测量与评价 直角坐标系 几何量测量 最小区域偏差模型 |
| 英文关键词:spatial straightness measurement and evaluation Cartesian coordinate system geometric measurement minimum zone deviation model |
| 基金项目: |
| DOI：10.11823/j.issn.1674-5795.2022.06.09 |
| 引用本文：杜红枫, 陈晓航, 王治忠, 张乃方.基于点特征的直角坐标系空间直线度偏差评价[J].计测技术,2022,(6):. |
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