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精密坐标测量中小段圆弧的一种评价方法 被引量:12

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摘要 坐标测量中对几何元素的拟合一般使用最小二乘法,但在测量计算小段圆弧时,测点的误差在很大程度上影响计算的结果。在最小二乘法的基础上,提出了一种拟合小段圆弧的新方法——半径固定最小二乘法。在圆弧对应圆心角较小的情况下,此方法所拟合的圆能提高拟合的精度和可靠性。
出处 《机械制造》 2008年第2期63-66,共4页 Machinery
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