| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor device capable of accurately calculating a rotation angle of a rotor without using an encoder.SOLUTION: The motor device includes: a stator around which a plurality of coils are wound; the rotor having different polarities in a circumferential direction; first and second magnetic sensors which output signals of sinusoidal waves having a predetermined phase difference from each other in response to rotations of the rotor; and a calculation part for calculating the rotation angle of the rotor on the basis of the signals from the first and second magnetic sensors.SELECTED DRAWING: Figure 2 |
