【摘要】：在進(jìn)行激光(單)三角測量時(shí),投影光束軸線的偏擺或投影光束在物面反射率不均勻處反射光斑重心的偏移會(huì)造成物面輪廓高度的測量誤差。提出了采用雙三角光路修正投影光束軸線偏擺和投影反射光斑重心偏移的方法,推導(dǎo)了修正公式;通過對物面反射率突變處輪廓高度的測量實(shí)驗(yàn),驗(yàn)證了修正方法及公式的正確性;對灰度條模板表面輪廓進(jìn)行雙三角測量,輪廓高度均方根偏差小于0.07 mm。
[Abstract]:In laser (single) triangulation, the deflection of the axis of the projected beam or the deviation of the center of gravity of the speckle reflected at the non-uniform reflectivity of the projective beam on the surface will result in the measurement error of the height of the contour of the object surface. This paper presents a method of correcting the deflection of the axis of projection beam and the center of gravity shift of projected reflection spot by using double triangle optical path, deduces the correction formula, and measures the height of contour at the abrupt point of reflectivity of object surface, The correction method and formula are verified, the surface contour of gray strip template is measured by double triangulation, and the root mean square deviation of contour height is less than 0.07 mm..
【作者單位】： 同濟(jì)大學(xué)物理科學(xué)與工程學(xué)院;
【分類號(hào)】：TH744.5

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本文編號(hào)：2288174