Minebea Mitsumi Inc.

Shunsuke Harigae

Hiroyuki Kaidu

Youhei Serizawa

Zhou Xiao

Provided is a motor drive controller capable of a locking energization operation while preventing increase in temperature of a coil. The motor drive controller includes a motor drive section selectively energizing coils with a plurality of phases of a motor and a locking energization control section. The locking energization control section performs a locking energization operation when the motor is started or restarted and holds a rotor of the motor in a position corresponding to the coil in which the lock current flows. In case of performing the locking energization operation, the locking energization control section switches a locking energization pattern for applying the lock current in the coil from a locking energization pattern when the preceding locking energization operation was performed. The locking energization control section controls the motor drive section so that the lock current flows in the coil in accordance with the switched locking energization pattern.

Growing community of inventors

Sakura, Japan

Shunsuke Harigae