| 摘要 |
PROBLEM TO BE SOLVED: To provide an error parameter extracting device of a position detector suitable for precisely detecting an angle. SOLUTION: Five sampling values a<SB>1</SB>-a<SB>5</SB>, b<SB>1</SB>-b<SB>5</SB>are acquired with respect to resolver signals cosθ, sinθ, and error parameters r, c, d andδwhich are used for compensating an offset, a phase error and an amplitude difference, are calculated according to the acquired sampling values a<SB>1</SB>-a<SB>5</SB>, b<SB>1</SB>-b<SB>5</SB>by using equations (1)-(7), and a rotational angle positionθis compensated according to the calculated error parameters r, c, d andδ. COPYRIGHT: (C)2007,JPO&INPIT
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