| 摘要 |
PURPOSE:To control the rotational drive of a motor without detecting its current. CONSTITUTION:A servo control means 10 outputs a voltage command value calculated by using a current command value set and a predicted current value. The voltage command value outputted is amplified with a power amplifying means by a specified gain, and applied to a motor 30. And a current predicting means 50 outputs a predicted current value calculated with a rotating position detected by a detecting means 40 provided in the motor 30 and the voltage command value. This predicted current value is put into the servo control means 10. Accordingly, it is possible to reduce the cost since it becomes possible to control the rotational drive of the motor 30 without detecting its current. |
