公开(公告)号：US20200382036A1

公开(公告)日：2020-12-03

申请号：US16997942

申请日：2020-08-20

申请人： KABUSHIKI KAISHA YASKAWA DENKI

发明人： Misaki SHIIYA ,  Masahiro TOUCHI ,  Motomichi OHTO ,  Sadayuki SATO ,  Hideaki IKE ,  Jiro MURAOKA

IPC分类号： H02P23/00 ,  G01R31/34 ,  G01M13/04 ,  H04L29/08 ,  G05B23/02

摘要： A motor control system includes a motor and a motor control circuitry. The motor includes a rotation axis and a bearing rotatably supporting the rotation axis. The motor control circuitry is configured to control the motor. The motor control circuitry includes a driving time adding circuit configured to add up a driving time of the motor to obtain an accumulated driving time of the motor, a remaining lifetime calculation circuit configured to calculate a remaining lifetime of the bearing based on a lifetime of the bearing and the accumulated driving time, and a warning outputting circuit configured to output warning information when the remaining lifetime is equal to or less than a threshold.