Method for automatically determining pose of large-aperture element

• Main Authors: LIAO WEI, YUAN XIAODONG, ZHANG CHUANCHAO, WANG HAIJUN, ZHAO LINJIE, CHENG JIAN, CHEN MINGJUN, YIN CHAOYANG, ZHENG WANGUO
• Format: Patent
• Language: Chinese; English
• Published: 01.03.2022
• Subjects: MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

The invention discloses an automatic pose determination method for a large-aperture element, relates to the technical field of engineering optics, and is used for solving the problem that the pose of the element is uncertain due to limited positioning precision of an element clamp on a machine tool. The method is technically characterized by comprising the steps that a plurality of images of an element of the current pose on a machine tool are collected and processed, translation errors and deflection errors of any point on the element relative to the calibration pose of the element under a machine tool coordinate system are obtained, the translation errors comprise X-axis translation errors, Y-axis translation errors and Z-axis translation errors, and the deflection errors comprise X-axis deflection errors and Y-axis deflection errors; and calculating according to the translation error and the deflection error to obtain the calibration attitude of the element. According to the method, the problem that the el