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http://dx.doi.org/10.3796/KSFT.2004.40.4.319

Development of the Electronic compass for Automatic Correction do Deviation  

Ahn, Young-Wha (Cheju National University)
Shin, Hyeong-Il (Pukyong National University)
Shirai, Yasuyuki (Chiba Institute of Technology)
Publication Information
Journal of the Korean Society of Fisheries and Ocean Technology / v.40, no.4, 2004 , pp. 319-327 More about this Journal
Abstract
The Electronic compass made as a pilot model in this research is comprised of a three axis magnetic sensor, an accustar clinometer, and a fiber optic gyro sensor. The results confirming the output character, performance, and the accuracy of the deviation corrects of each sensor are as follows: 1) As for the output character of the three axis magnetic sensor, the magnetic field showed a cosine curve on the X axis, a - sine curve on the Y axis, and constant figures on the Z sensor. The horizontal component H and the vertical component V of the terrestrial magnetism calculated from the output voltage were 33.2${\mu}$T and 23.95${\mu}$T respectively. 2) When the fiber optic gyro sensor is fixed on the electromotive rotation transformation and has made a clockwise rotation with the speed of 10/sec, 20/sec, and 30/sec, the relationship between the output and the rotation angle of the fiber optic gyro sensor showed proportionally constant values. 3) When the magnetic field was induced with a magnet, the deviation before the correction was significant at a high of 25. However, the deviation after the correction using Poisson correction was in the 2 range, significantly lower than before the correction. It was confirmed that automatic deviation corrects are possible with the electronic compass made as a pilot model in this research.
Keywords
electronic compass; magnetic sensor; fiber optic gyro sensor; deviation;
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