Error Correction Caused by the Deviation of the Center and the Swash of the Divided Disk Using Multihead Method
Main Article Content
Abstract
The article presents a method to correct the error caused by the deviation of the center, the swash of the divided disk of the instrument that created full circle standard angles using multihead method. This instrument includes incremental coding divided disk with 10800 graduations, on which installed 6 sensor heads that is arranged into 2 arrays: one is $90^{\circ}$ interval of 4 heads and another is $120^{\circ}$ interval of 3 heads, which integrates the $2^{10}$ bit interpolation. With the use the equal division average method (EDA), from the data obtained on the head, the instrument can correct the error caused by the eccentricity and swash of the divided disk. The achieved result is the error of the instrument being $\pm0.37$, meet the requirements of the national metrology standard of the angular field.
Keywords
Angle standards, EDA method, Curve calibration
Article Details
References
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[2] W. T. Elster., Uncertainty analysis for angle calibrations using circle colsure, Journal of Research of the National Institute of Standards and Technology, 103(2) (1998), 141-201
[3] Renishaw ple- The Renishaw apply innovation accuracy of angle encodes (2011)
[4] X. Lu, Self-calibration of on-axis rotary encoders. CIRP annals manufacturing technology 56(1) (2007).
[5] Tsukasa Watanabe, H. Fujimoto. Application of self-calibratable rotary encoder (2009), 54-58
[6] Tsukasa Watanabe, Compact Self-Calibration Rotary Encoder XX IMEKO World Congress Metroloy for Green Growth, (September 9-14, 2012)