| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a detection device and a drive device capable of being downsized. <P>SOLUTION: A detection device has: generation means generating L (L is an integer of two or more) first sinusoidal wave signals with different phases from each other depending on a rotation angle of a motor; calculation means performing an arithmetic operation using the respective L first sinusoidal wave signals to generate M (M is an integer satisfying M>L) second sinusoidal wave signals; comparison means compares respective amplitude values of the M second sinusoidal wave signals with a preliminarily-defined threshold to generate N (N is an integer satisfying N≥M) comparison result signals indicating comparison results; and detection means generating a detection signal for detecting at least one of a rotation position of the motor and a rotation speed of the motor, on the basis of the N comparison result signals generated by the comparison means. <P>COPYRIGHT: (C)2013,JPO&INPIT |
