Investigation of yaw errors in measuring tape calibration system

Yaw error measurements using a new designed yaw sensor were carried out to determine the characteristics of yaw errors and analyze the behavior of the structural guide. Laser interferometers have generally been used in calibration laboratories for the angular measurement of measuring tape calibration systems, and their performance must be verified to determine whether it meets the laboratory specifications. The yaw sensor technique is identical to the error compensation used in a measuring tape calibration, and also has some special parameters. Although the yaw error observation period is very short, it is sufficiently accurate for a carriage yaw sensor. The results of a yaw error measurement comparison between a yaw sensor and the angular measurement system of a laser interferometer were satisfactory. The measurement uncertainty of a yaw sensor calibration was approximately U = 40 arcsec at a confidence level of 95%.