| 摘要 |
<p>The method involves calibrating and determining a centre (Z-0) in the measuring field of the measuring device. The perpendiculars (r-1 to r-6, r-1' to r-6') from the centre to the tangents (T-1 to T-6, T-1' to T-6') and the distance from the centre to the tangents are calculated. The corner points of the polygon surrounding the spherical profile are calculated, and a contour is determined. A reference circuit is determined in relation to the contour such that the quadratic shape deviation of the contour reaches a minimum in relation to reference circuit. The reference circuit represents the smallest possible circuit that adapts to the contour, and represents the largest possible circuit that adapts to the contour. The reference circuit together with an additional circuit that is concentric to the reference circuit surrounds the contour at a minimal radial distance.</p> |
