公开(公告)号：US20180275645A1

公开(公告)日：2018-09-27

申请号：US15788905

申请日：2017-10-20

Applicant: Kabushiki Kaisha Yaskawa Denki

Inventor： Isamu MATSUMURA ,  Junya HISAMATSU

IPC: G05B23/02 ,  H02P23/18 ,  G05B11/32 ,  H02K11/215 ,  H02K11/22

CPC classification number: G05B23/0208 ,  G01D5/24461 ,  G01D5/3473 ,  G05B11/32 ,  G05B19/0428 ,  H02K11/215 ,  H02K11/22 ,  H02P23/186

Abstract: A motor control system includes an encoder, and motor control circuitry. The encoder includes a first disk and a second disk which are mounted to a rotation shaft of a motor, a first rotation position detection sensor that detects a rotation position in one rotation of the rotation shaft of the motor from the first disk, a second rotation position detection sensor that detects a rotation position in one rotation of the rotation shaft of the motor from the second disk, and transmission circuitry that transmits first safety data, which includes first rotation position data indicating the rotation position detected by the first rotation position detection sensor and second rotation position data indicating the rotation position detected by the second rotation position detection sensor, and the control circuitry compares the rotation position included in the first rotation position data and the rotation position included in the second rotation position data.

公开(公告)号：US20200280460A1

公开(公告)日：2020-09-03

申请号：US16794232

申请日：2020-02-19

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Manabu FUJITA ,  Wataru NOZAKI ,  Isamu MATSUMURA ,  Junya HISAMATSU

IPC: H04L12/40

Abstract: A slave device includes a first connector, a second connector, a switch, and a communication circuit. The switch is alternatively connectable to the first connector or the second connector according to a connection way via which the slave device is connected to a master device and another slave device. The communication circuit is connected to the first connector and the switch. The communication circuit is configured to transmit and receive a first communication signal to and from the first connector, and is configured to transmit and receive a second communication signal to and from the switch.

公开(公告)号：US20160241174A1

公开(公告)日：2016-08-18

申请号：US15138222

申请日：2016-04-26

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Junya HISAMATSU ,  Taishi HIROMI ,  Yusuke TANAKA

IPC: H02P6/12 ,  H02P6/28

CPC classification number: H02P6/12 ,  H02H7/1225 ,  H02M1/08 ,  H02M1/082 ,  H02M1/32 ,  H02M1/38 ,  H02P6/28 ,  H02P27/08

Abstract: This disclosure discloses a motor control device configured to control a motor. The motor control device includes an inverter part, a gate driving circuit, a PWM generation circuit, at least one gate buffer, and a control part. The inverter part is configured to convert direct current into alternate current in response to a motor drive command. The gate driving circuit is configured to drive the inverter part. The PWM generation circuit is configured to generate a PWM signal applied to the gate driving circuit. The at least one gate buffer is disposed between the gate driving circuit and the PWM generation circuit. The control part is configured to apply a test signal to the gate buffer to determine abnormality of the gate buffer.

Abstract translation: 本公开公开了一种被配置为控制电动机的电动机控制装置。 电动机控制装置包括逆变器部，门驱动电路，PWM生成电路，至少一个门缓冲器和控制部。 逆变器部件被配置为响应于电机驱动命令将直流电转换为交流电流。 门驱动电路构成为驱动逆变器部。 PWM生成电路被配置为产生施加到栅极驱动电路的PWM信号。 至少一个栅极缓冲器设置在栅极驱动电路和PWM生成电路之间。 控制部分被配置为向门缓冲器施加测试信号以确定门缓冲器的异常。

公开(公告)号：US20210351949A1

公开(公告)日：2021-11-11

申请号：US17381194

申请日：2021-07-21

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Hidetsugu KOGA ,  Kunihiko OGAWA ,  Isamu MATSUMURA ,  Junya HISAMATSU ,  Yasuhiro MATSUTANI

IPC: H04L12/28 ,  H04L12/10

Abstract: A communication system includes a master device, a connector, a superordinate trunk cable connecting the master device and the connector, a superordinate slave device connected to the connector, a subordinate slave device, and a subordinate trunk cable connecting the connector and the subordinate slave device. The connector includes a superordinate power line via which power is supplied from the master device, a power branching unit to divide the superordinate power line into a first power line connected to the superordinate slave device and a second power line connected to the subordinate slave device, a superordinate signal line via which communication data between the master device and the superordinate slave device is configured to be transmitted, and a subordinate signal line via which communication data between the superordinate slave device and the subordinate slave device is configured to be transmitted.