| 摘要 |
PURPOSE:To improve response, stability for abrupt acceleration, deceleration and load change by calculating power from a current flowing to a stator coil, i.e., a current signal of current detecting means and a voltage signal based on a speed command value, and controlling a brushless motor. CONSTITUTION:Current signals Iu and Iv detected by current detectors 29 and 30 are applied to the input terminal of a power calculator 33 of power calculating means through an amplifier 31. The calculator 33 calculates power signals W1 and W2, which are applied to the input terminal of a controller 34. The controller 34 calculates a voltage signal (v) and a phase signal theta based on the signals W1, W2 and a speed command value omega* to be applied from a setter 35. Further, six drive signals DS PWM-controlled based on them are output from an output terminal. |
