제어로봇시스템학회:학술대회논문집

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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Robust Electric Compass to Dynamic Magnetic Field Interference

  • Ko, Jae-Pyung (Department of Electronics Engineering, Pusan National University) ;
  • Kim, Yang-Hwan (Department of Electronics Engineering, Pusan National University) ;
  • Kang, Woong-Ki (Department of Electronics Engineering, Pusan National University) ;
  • Lee, Jang-Myung (Department of Electronics Engineering, Pusan National University)
  • Published : 2004.08.25
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Abstract

The purpose of this research is to improve the reliability of automobile navigation system that utilizes the magnetic compass for localization. On account of its sensitiveness against the dynamic external interference of the magnetic field, the electronic compass itself is not accurate enough to be used for the localization compared to the gyro-compass. To overcome this shortcoming, in this research, a robust electronic compass is designed by using two magnetic compasses to cancel out the dynamic interferences efficiently. That is, a dual compass predictive calibration algorithm against irregular external interference of magnetic field is newly proposed and implemented in this paper. When the dynamic interference can be eliminated from the electronic compass, it becomes much accurate than the gyro-based system that suffers from the accumulative drift error. The reliability and performance of the designed system have been verified through the real driving experiments.

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