| 摘要 |
PROBLEM TO BE SOLVED: To effectively reduce an error of a detection angle in accordance with an actual usage state taking magnetic field intensity dependency of the error of the detection angle into consideration.SOLUTION: A magnetic sensor system comprises: a magnetic field generation unit that generates a detected magnetic field; and a magnetic sensor that creates an angle detection value having a corresponding relation with an angle formed by a direction of the detected magnetic field in a reference position with respect to a reference direction, in which the magnetic sensor comprises a magnetic field detection unit. When the direction of the detected magnetic field rotates in a prescribed cycle, the angle detection value includes an angle error component that varies in a 1/4 cycle of the prescribed period. The magnetic sensor has a characteristic in which when varying intensity of the detected magnetic field in the magnetic field detection unit, a maximum value E4 of an absolute value of the angle error component varies to take a minimum value when the intensity of the detected magnetic field is a first intensity value. At a time when using the magnetic sensor system, and letting actual intensity of the detected magnetic filed in the magnetic field detection unit be a second intensity value, a difference between the first intensity value and the second intensity value is equal to or less than 20% of the first intensity value.SELECTED DRAWING: Figure 16 |
