| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor driver which can reduce torque ripple, vibration and noise when a motor is driven and simultaneously assures high output efficiency. SOLUTION: This motor driver comprises a wide range power feeding device 1 which feeds electrical power in the electrical angle of 150 degrees to 3-phase drive coils 11, 13 and 15, and a power feeding amount controller 2 for controlling power feeding amount to the coil of each phase. The power feeding amount to the phase coil during the overlap period where the adjacent phase coils among the coils of each phase are in the same power feeding condition is defined as the first value, while the power feeding amount during the period other than the overlap period is defined as the second value. |
