公开(公告)号：US20230001549A1

公开(公告)日：2023-01-05

申请号：US17778308

申请日：2020-09-18

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Itaru MURUI ,  Shota FUJII ,  Keita OKAMOTO ,  Naoki TSUJIMOTO ,  Kota KITAMURA ,  Kotaro MOMOEDA

IPC: B25B23/147 ,  B25B21/02 ,  H02P23/00

Abstract: An electric tool system includes a motor, a control unit, and an output shaft. The motor includes a stator and a rotor. The control unit performs vector control on the motor. The control unit includes a first acquisition unit, a second acquisition unit, and a command value generation unit. The command value generation unit calculates, based on a torque current acquisition value (current measured value) as a value related to a torque current as acquired by the first acquisition unit and an acceleration acquisition value as a value related to acceleration of the rotor as acquired by the second acquisition unit, at least one of a command value of the torque current to be supplied to the motor or a command value of an excitation current to be supplied to the motor.