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AssigneeFanuc Corporation
InventorsTakashi Okamoto, Akira Yamaguchi, Shigeki Hanyu, Yuuichi Yamada
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An object of the present invention is to provide a servo motor driving apparatus and a servo motor driving method for driving a plurality of servo motors, wherein provisions are made to improve the reuse efficiency of servo motor regenerative energy. The servo motor driving apparatus (2) comprises: a plurality of inverter circuits (4, 4″, 4″) which supply AC power to the plurality of servo motors (5, 5′, 5″), respectively; a converter circuit (3) which supplies electric power in common to the inverter circuits (4, 4′, 4″); and an inverter control unit (6) which, when giving an acceleration command to any one of the servo motors, gives a deceleration command to another one of the servo motors at the same time.
A servo motor driving apparatus for driving a plurality of servo motors including at least a first servo motor and a second servo motor, that are coupled to a moving mechanism to supply motive power to said moving mechanism, said servo motor driving apparatus comprising:
A method for driving a plurality of servo motors including at least a first servo motor and a second servo motor, that supply motive power to a moving mechanism by being supplied with AC power from a plurality of inverter circuits respectively, said plurality of inverter circuits being supplied with electric power from a common converter circuit, wherein
Dependencies are inferred from the claim text.