| 摘要 |
<p>A first third harmonic component removing portion calculates an approximate value (sin¸) n of a signal sin¸ that is an output signal of a first magnetic sensor from which third harmonic components have been removed. A second third harmonic component removing portion calculates an approximate value (cos¸) n of a signal cos¸ that is an output signal of a second magnetic sensor from which third harmonic components have been removed. A rotation angle calculation portion calculates a rotation angle ¸ of a rotor based on the approximate value (sin¸) n of sin¸, which has been calculated by the first third harmonic component removing portion and the approximate value (cos¸) n of cos¸, which has been calculated by the second third harmonic component removing portion.</p> |
