公开(公告)号：US20180335763A1

公开(公告)日：2018-11-22

申请号：US15952502

申请日：2018-04-13

Applicant: FANUC CORPORATION

Inventor： Kunio TSUCHIDA ,  Taku SASAKI ,  Nobuo HIRAYAMA

IPC: G05B19/33 ,  H03M1/20 ,  H03M1/12

Abstract: A motor driving apparatus includes an amplifier receiving, from a detector, a sine wave shaped signal detected in response to rotation of a motor, and amplifying the signal with a set amplification factor, an A/D converter for performing digital conversion by sampling the signal amplified by the amplifier at a sampling timing in a predetermined cycle, an amplification factor setting part for changing setting of the amplification factor of the amplifier, and an amplification factor set timing command part for issuing a command with respect to a timing for changing the setting of the amplification factor by the amplification factor setting part. The amplification factor set timing command part issues the command with respect to the timing so that a waveform stabilizing period until distortion in a waveform of the signal occurring when the amplification factor setting part changes the setting is stabilized does not overlap with the sampling timing.

公开(公告)号：US20190079495A1

公开(公告)日：2019-03-14

申请号：US16115010

申请日：2018-08-28

Applicant: FANUC CORPORATION

Inventor： Nobuo HIRAYAMA ,  Taku SASAKI

IPC: G05B19/414 ,  G05B19/408 ,  G05B19/418 ,  B25J9/16

Abstract: An object is to provide a numerical controller and a device included in an industrial machine which manage a control program in the device included in the industrial machine and can reduce the operational burden during the updating of the control programs related to the device. A numerical controller which is connected to a motor drive device so as to be able to communicate therewith and which controls the motor drive device, includes: a program management storage unit which stores a control program that is written into the motor drive device and is executable; a program writing unit which writes the control program stored in the program management storage unit; a data acquisition portion which acquires from the motor drive device a control program that is already stored in the motor drive device; and a storage control unit which stores the acquired control program in the program management storage unit.

公开(公告)号：US20180335764A1

公开(公告)日：2018-11-22

申请号：US15964481

申请日：2018-04-27

Applicant: FANUC CORPORATION

Inventor： Kunio TSUCHIDA ,  Taku SASAKI ,  Nobuo HIRAYAMA

IPC: G05B19/33 ,  H02P8/14

CPC classification number: G05B19/33 ,  G05B2219/37092 ,  G05B2219/37181 ,  H02P8/14

Abstract: To provide a motor driving apparatus capable of obtaining high detection resolution irrespective of whether a frequency of a signal from a detector is high or low. A motor driving apparatus for driving a motor includes an amplifier circuit for receiving a signal from a detector for outputting information including a position and a speed of the motor as the signal, and amplifying the received signal with a set amplification factor, a frequency detecting part for detecting a frequency of the signal, and an amplification factor setting part for changing setting of the amplification factor of the amplifier circuit according to the frequency detected by the frequency detecting part.