公开(公告)号：US20200328618A1

公开(公告)日：2020-10-15

申请号：US16305659

申请日：2017-02-02

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takahiro OHORI ,  Hideki TAMURA ,  Yusuke TANJI ,  Shingo OKAURA

IPC: H02J50/12 ,  H02J7/00 ,  H02J50/80 ,  B60L53/122

Abstract: A contactless power feeding system includes: a primary circuit for supplying primary power to a power feeding coil; and a primary control circuit for controlling the primary circuit. The primary control circuit acquires, from a secondary control circuit, a secondary measured value and a secondary target value of secondary power received by a power receiving coil. The primary control circuit performs control processing and update processing alternately and repeatedly. The control processing is processing of controlling the primary circuit to bring the primary measured value into conformity with a primary target value. The update processing is processing of updating the primary target value. The update processing includes processing of calculating the primary target value based on transfer efficiency to be determined by the primary measured value and the secondary measured value and on the secondary target value.

公开(公告)号：US20180034323A1

公开(公告)日：2018-02-01

申请号：US15549320

申请日：2016-03-11

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yusuke TANJI ,  Hideki TAMURA ,  Kazumasa YOSHIDA

IPC: H02J50/12 ,  H04B5/00

CPC classification number: H02J50/12 ,  B60L53/12 ,  B60L53/20 ,  B60M7/00 ,  H02J7/025 ,  H04B5/0037 ,  H04B5/0093 ,  Y02T10/7005 ,  Y02T10/7072 ,  Y02T90/122 ,  Y02T90/127 ,  Y02T90/14

Abstract: A control circuit controls a plurality of conversion switching elements by first drive signals and a plurality of adjustment switching elements by second drive signals. The control circuit is configured to adjust a phase difference which is a delay of the phase of each of the second drive signals to the phase of each of the first drive signals to a set value within a prescribed range to adjust the magnitude of output power. The prescribed range includes at least one of a range of 270 degrees to 360 degrees and a range of 90 degrees to 180 degrees.

公开(公告)号：US20240075600A1

公开(公告)日：2024-03-07

申请号：US18272578

申请日：2021-01-26

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yusuke TANJI ,  Hideki TAMURA

IPC: B25B23/147 ,  B25B21/02

CPC classification number: B25B23/1475 ,  B25B21/02

Abstract: An electric tool includes a motor, an impact mechanism, an output shaft, a torque measuring unit, a fastening torque calculating unit, and a control unit. The output shaft receives, from the impact mechanism, rotational impact around an axis. The torque measuring unit measures, as measured torque, torque applied to the output shaft. The fastening torque calculating unit calculates, based on the measured torque measured by the torque measuring unit, fastening torque to be applied to a fastening member. The control unit performs a speed reducing function by changing, according to the fastening torque calculated by the fastening torque calculating unit, the number of revolutions of the motor from a first number of revolutions into a second number of revolutions. The second number of revolutions is smaller than the first number of revolutions.

公开(公告)号：US20210053196A1

公开(公告)日：2021-02-25

申请号：US17043959

申请日：2019-03-07

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yusuke TANJI

IPC: B25B23/147 ,  B25B21/02

Abstract: A signal processing apparatus for an electric tool is provided for generating a motor control signal for controlling a motor by performing a smoothing process on a torque value signal from a torque sensor of an electric tool by using a filter. The signal processing apparatus includes a half width detector circuit that detects a half width of the torque value signal; and a calculator circuit that controls a cut-off frequency of the filter to change the cut-off frequency according to a number of hits of the electric tool, based on the detected half width of the torque value signal.

公开(公告)号：US20180034322A1

公开(公告)日：2018-02-01

申请号：US15547510

申请日：2016-03-11

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yusuke TANJI ,  Hideki TAMURA

IPC: H02J50/12

CPC classification number: H02J50/12 ,  B60L53/12 ,  B60L53/30 ,  B60M7/00 ,  H02M7/5387 ,  Y02T10/7005 ,  Y02T10/7072 ,  Y02T90/12 ,  Y02T90/121 ,  Y02T90/122 ,  Y02T90/14

Abstract: A control circuit is configured to adjust a phase difference which is a delay of the phase of each of the second drive signals to the phase of each of the first drive signals to a set value within a prescribed range to adjust the magnitude of output power. The control circuit includes an estimator and a setter. The estimator estimates whether an initial mode which is an operation mode of an inverter circuit in the case of a variable capacitance circuit being disabled is a leading phase mode or a lagging phase mode while the variable capacitance circuit is operating. The setter sets the prescribed range in accordance with the initial mode estimated by the estimator.