| 摘要 |
An amplitude normalization circuit 13 finds the amplitude of position signals outputted from a position detection circuit 6 on the basis of Hall signals from Hall elements 2 a to 2 c. The position signals from the position detection circuit 6 are then divided by the thus found amplitude and are thereby normalized. Multiplier circuits 7 a to 7 c then multiply by a torque error signal limited by a limiter 5 the position signals normalized by the amplitude normalization circuit 13 to generate pseudo-sinusoidal signals.
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