| 摘要 |
PROBLEM TO BE SOLVED: To provide a reliable drive device of brushless DC motors that improves stability in high-load and high-speed drive of brushless DC motors, expands a driving region, suppresses any unstable state due to external factors, and is stably driven even if loads become excessive.SOLUTION: The drive device corrects an output so that a state of current and voltage, where a current voltage state acquisition means 16 acquires an output of a second waveform generation unit 15 output at a prescribed frequency under a high load, coincides with an aimed state of current and voltage. Further, the device performs high-speed drive by an output of a waveform correction section 18 for correcting an output by voltage detected by a voltage detection means 17, thus holding an appropriate phase relationship according to drive speed and load states, input voltage states, or the like, thereby achieving stable drive even at disturbance, or the like. |
