Minebea Mitsumi Inc.

Yoshihisa Okabuchi

Masato Aoki

Hiroyuki Kaidu

Takahiro Suzuki

Tomotaka Sakuma

Takamichi Kitano

Wataru Nogamida

Kouji Kebukawa

Takahiro Saito

Takayuki Sugaya

Kentaro Suzuki

In a motor drive control device including a machine learning function, appropriate motor drive control in accordance with the usage environment of a motor is realized. A motor drive control deviceincludes: a measurement data generation unitthat generates measurement datarelating to operation of a motor; a training data generation unitthat attaches predetermined identification information indicating the operation state of the motorto the measurement dataand generates training data; a machine learning unitthat generates a learned modelfor determining the operation state of the motorby performing machine learning using the training data; and a monitor control unitthat monitors the operation state of the motorusing the learned model. In the motor drive control device, the training data generation unitstarts generation of the training datawhen the training data generation unitreceives a command ordering acquisition of the training datafrom a host device

Motor drive control device, motor drive control system, and motor drive control method

A motor includes a shaft, a rotor, a stator including a coil and opposed to the rotor, and a bearing configured to support the shaft. In addition, the motor further includes a first temperature sensor disposed farther toward an outer periphery side than the coil, and a second temperature sensor disposed farther toward an inner periphery side than the coil.

Motor and fan motor

The degree of flexibility of a speed curve for a target rotational speed of a motor is to be increased. A motor control circuitmeasures a duty cycle of an input speed command signal Sc indicating a target rotational speed of a motorto be driven, sets an inflection point In for each duty cycle obtained by equally dividing a possible duty cycle range assumed by the speed command signal Sc based on resolution informationindicating a resolution of the duty cycle of the speed command signal Sc, calculates a rotational speed corresponding to the measured duty cycle of the speed command signal Sc based on rotational speed informationindicating rotational speeds at the inflection points In on a speed curve and the set inflection points In, and determines the calculated rotational speed as the target rotational speed.

Motor control circuit, motor drive control device, and motor unit

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Sapporo, Japan

Yoshihisa Okabuchi