The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 26, 2021
Filed:
Sep. 07, 2018
U-mhi Platech Co., Ltd., Aichi, JP;
Takashi Takii, Aichi, JP;
U-MHI PLATECH CO., LTD., Aichi, JP;
Abstract
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.