U-mhi Platech Co., Ltd.

Ube Machinery Corporation, Ltd.

Takashi Takii

Toshihiko Kariya

Yasuo Okochi

Yasuhiro Kai

A motor driving device includes: a first motor and a second motor; a first power line for supplying driving power to the first motor; a second power line for supplying driving power to the second motor; a first inverter circuit configured to supply the driving power to the first power line; a second inverter circuit configured to supply the driving power to the second power line; transmission lines including a pair of a U-phase line and a U'-phase line, a pair of a V-phase line and a V&#x2032;-phase line, and a pair of a W-phase line and a W&#x2032;-phase line; and an impedance circuit impedance-matched to the transmission lines. Each of the transmission lines is arranged via an insulator.

Motor driving device

A motor driving apparatus includes a first motor group including a number N of individual servo motors, a second motor group including a number N of individual second servo motors driven synchronously with the servo motors, and an inverter control unit. The inverter control unit controls a first switching total value and a second switching total value to be reversed in positive/negative sign. The first switching total value is obtained by subtracting the number of semiconductor switching devices opened in circuit on low potential side from the number of semiconductor switching devices opened in circuit on first high potential side, corresponding to the first motor group. The second switching total value is obtained by subtracting the number of semiconductor switching devices opened in circuit on high potential side from the number of second switching elements opened in circuit on low potential side, corresponding to the second motor group.

Motor driving apparatus

A temperature control method includes: a step of obtaining, by means of PID control, a first energization rate based on a first temperature difference between an actually measured temperature and a target temperature; a step of obtaining a second energization rate based on a second temperature difference between the ambient temperature of the environment in which a heating barrel is disposed and the target temperature; a step of obtaining a corrected energization rate on the basis of the result of comparison of the first energization rate and the second energization rate; and a step of controlling the electrical power to be supplied to a heater on the basis of the corrected energization rate. The corrected energization rate is set to any of predetermined first, second, and third conditions on the basis of the comparison result.

Temperature control method and temperature control device

Provided is a control device for an injection molding machine, capable of reducing the load on a user when re-displaying a previously displayed screen. The control device () for the injection molding machine () controls the display of display images on a display unit (). This control device () divides the display unit () into a first display area () and a second display area () and, if an instruction to scroll in the vertical direction is received when a first display image (P) is displayed in the first display area () and a second display image (P) is displayed in the second display area (), synchronously scrolls the first display image (P) and the second display image (P) whilst maintaining the relative positions of the first display image (P) and the second display image (P).

Growing community of inventors

Nagoya, Japan

Takashi Takii