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Development of the Electronic compass for Automatic Correction do Deviation

自動自差修正이 가능한 電子컴퍼스의 개발에 관한 연구

  • Published : 2004.11.01

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.

本 硏究에서 試驗制作한 電子컴퍼스는 3軸磁氣센서와 傾斜角센서, 그리고 光자이로센서로 構成하였으며, 이들 각 센서의 出力特性과 性能 및 自差補正의 精度를 확인한 結果는 다음과 같다. 1) 3軸 磁氣센서의 出力特性은, X軸에서 측정된 磁界는 cos커브, Y軸에서는 -sin 커브, 그리고 Z軸에서는 그 값이 일정하게 나타나고 있어서 3軸 磁氣센서로서의 기능이 충분하다고 사료되며, 이때 出力電壓으로부터 算出된 地磁氣의 水平成分 H와 垂直成分 V는 각각 H=33.2${\mu}$T, V=23.95${\mu}$T였다. 2)光자이로 센서를 電動回轉台에 고정시키고, 시계방향으로 10$^{\circ}$/sec, 20$^{\circ}$/sec, 30$^{\circ}$/sec의 속도로 회전시켰을 때, 光자이로센서의 出力과 回轉角度와의 관계는 모두 일정한 값으로 비례함을 알 수 있다. 3) 補正前 自差는 磁界에 의해 誘導되고 있기 때문에, 최대 -25$^{\circ}$까지 크게 나타나고 있으나, 포와숀 補正法을 이용한 補正後의 자差는 ${\pm}2^{\circ}$ 범위 이내로 補正前에 비하여 自差가 현저히 작게 나타나고 있어서, 이번 硏究에서 試驗制作한 電子컴퍼스로 自動自差修正이 가능함을 확인할 수 있었다.

Keywords

References

  1. ISO/TC8/WGI (1974) : Addendm to international Standard ISO2296. Magnetic Compass and Accessoris, Rules for Testing and Certification
  2. ISOSCD 11606 (1993) : On the Electromagnetic Compass of ISOICD 11606
  3. NOBLE R. (1992) : Electronic Fluxgate Compass. Electron World Wor, Vol, 97, No. 1670, 14-18
  4. MIYAMOTO Y, SHIRAI Y, HAMADA E. (1993) : Experimental Study of three Magnetic Axisdetection Tye Electronec Compass by the use of Magnetic Sensor, Japan Institude of Navigation No. 115, 14-15
  5. B. J. LYNCH, H. R. GALLANTREE (1990) : A new magnetic sensor technology. GEC Journal of Res, Vol. 8, No. 1, 13-20
  6. 莊司和民,鈴木 褣 (1983) : 磁氣ユンパスと自差修正. 成山堂書店, 355-368
  7. 安瑛化,辛亨鎰, 白井靖辛(1994) : 磁氣檢出 素子를 이용한 電予 磁氣 컴퍼스의 基礎的 硏究. 韓國漁業技術學會誌, 30(3), 182-188
  8. 安瑛化, 辛亨鎰(1995) : 3軸 磁氣檢出 素子를 이용한 포와숀 係數 檢出技法. 韓國漁業技術學會誌, 31(2),166-171