| 摘要 |
PROBLEM TO BE SOLVED: To achieve the high speed for control response without the effect of a pulsating component when the pulsating component is present in the detected value of a current. SOLUTION: This system is constituted so that a voltage command value is operated by sampling the current command value of a load and the detected value of the current, the voltage command value and a triangular wave carrier are compared, PWM(pulse-width modulation) pulses are generated and driving is performed by the WMP pulses. In this case, when the current command value and the detected value of the current are sampled and the operating amount is operated, the periodicity of the pulsating component included in the detected current value is considered, and the detected current value is sampled at a period 11, which is longer than a period 13 for sampling the current command value. In the meantime, the calculation of the operating amount is performed in a short period in compliance with the sampling period 13 of the current command value. |
