| 摘要 |
PURPOSE:To suppress increase in the current to the minimum limit and to enhance the reliability by cancelling the phase displacement of a current command due to an erroneous operation at every prescribed period. CONSTITUTION:A pulse genertor 5 outputs the first pulse signal having the number of pulses proportional to the rotating angle of a motor and the second pulse signal MKP having the same number as the number of pole pairs of a motor per one revolution. When the second pulse signal MKP is outputted, the prescribed initial value is set in a counter 7. Accordingly, even if the phase of the current command is displaced by the erroneous operation, this phase displacement can be cancelled at the timing of the second pulse signal MKP. |
