The optical rotation angle sensor is characterized in that it is excellent in resolution and angle detection accuracy, and the magnetic sensor is characterized in that it is resistant to foreign matter such as dust and dirt, and that it is possible to achieve low power consumption, small size, and low cost of the sensor, as compared with the optical sensor. However, in the magnetic type, in order to obtain a high resolution as compared with the optical type, it is necessary to make the magnetization period of the magnet fine, so the magnetic rotation angle sensor has the difficulties compared with the optical type. This time, for magnetic rotation angle detection, we carried out a feasibility study by magnetic field simulation and principle verification experiments on a technique of extracting signals of two frequencies from one signal detection track by modulating a magnetic field from a magnet with a slit of a magnetic material, and this paper reports the result.

中文翻译：

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带有磁性物质缝隙的磁性旋转角度传感器的基本检查

光学旋转角度传感器的特征在于其分辨率和角度检测精度优异，并且磁性传感器的特征在于其耐灰尘和污物等异物，并且可以实现低功耗，与光学传感器相比，该传感器尺寸小，成本低。然而，在磁性类型中，为了与光学类型相比获得高分辨率，必须使磁体的磁化周期变细，因此磁性旋转角度传感器与光学类型相比具有困难。这次，为了进行磁旋转角检测，