| Summary: | 碩士 === 元智大學 === 機械工程學系 === 95 === In this thesis, we use the HMC2003 three-axis Magneto resistive Sensor for the purpose, and also this magnetic resistive sensor could apply in the low magnetic field strengths. Actually measures the azimuth and attitude on the compass rose for every 15-degree. On the compass rose measures the magnetic field from the X、Y、 Z magneto-resistive sensors in to the voltage, after the translation to find out the azimuth.
During the measurement the influence of the magnetic field along the each axis on the HMC2003 hybrid could upset , or flip the polarity of film magnetization, thus changing the sensor characteristics. Following such an upset field, a strong restoring magnetic field must be applied momentarily to restore, or set, the sensor characteristics. The set/reset procedure become the needed step .
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