公开(公告)号：US20190199257A1

公开(公告)日：2019-06-27

申请号：US16287601

申请日：2019-02-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Mitsuhiro SAKAMOTO ,  Yasuyuki YOKOUCHI ,  Daisuke SONODA ,  Ryuta SASAKI

IPC: H02P21/00 ,  H02P6/10 ,  H02P21/20 ,  H02P23/00

CPC classification number: H02P21/0025 ,  H02P6/08 ,  H02P6/10 ,  H02P21/00 ,  H02P21/20 ,  H02P23/0031 ,  H02P27/06 ,  H02P2205/05

Abstract: A motor control device at least includes a speed control part for controlling a motor rotation speed. The motor control device includes a torque correction means for suppressing variation in torque constant due to individual differences of motors. In addition, the motor control device corrects the torque constant by using a correction torque coefficient calculated based on an unloaded speed when a fixed voltage is applied. Alternatively, the torque constant is corrected using the correction torque coefficient calculated based on the motor applied voltage when the motor speed is fixed.