Calibration Method for Optical Axis Perpendicular Error of Laser Sensor
(2.National Institute of Metrology of China, Beijing, China 100013)
【Abstract】The high-precision calibration of laser sensors in high-precision composite measuring machines is conducted. The calibration method of the optical axis perpendicular error angle by using the calibration block of double slopes with known base angles and the sine theorem is proposed. This method can avoid the errors from various directions caused by the non-perpendicular orientation between the optical axis of sensors and the worktable, which can effectively improve the measurement accuracy of this sensor and provide a basis for multi-sensor duplex measurement with higher accuracy.
【Keywords】 sensors; calibration of perpendicular error; fitted plane slope; optical axis; high-precision complex measurement;
【DOI】
【Funds】
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ISSN:0258-7025
CN: 31-1339/TN
Vol 44, No. 04, Pages 224-233
April 2017
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