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AssigneeFanuc Corporation
InventorsYasusuke IWASHITA, Tadashi OKITA, Hiroyuki KAWAMURA, Yuuya UENO
Estimating the term…
A mechanical system includes a plurality of amplifier groups each having a common power source unit connected to a higher-level power source and a plurality of power supply units for supplying power to servo motors from the common power source unit. A servo motor drive control device of the mechanical system includes a plurality of amplifier group electric power detection units each determining an electric energy of the corresponding one of the amplifier groups. Each of the amplifier group electric power detection units totals individual periodic electric energy dEak of the servo motors connected to the power supply unit associated with the corresponding amplifier group thereby to determine an amplifier group periodic electric energy dEbg representing a consumed electric energy or a regenerated electric energy in the corresponding amplifier group and integrates the determined amplifier group periodic electric energy dEbg over a predetermined time length thereby to determine an amplifier group consumed electric energy Ebng. The individual periodic electric energy dEak takes a positive value when electric power is consumed by the servo motors, and takes a negative value when electric power is regenerated by the servo motor.
A servo motor drive control device controlling servo motors of a mechanical system, said mechanical system including a plurality of amplifier groups each having a common power source unit connected to a higher-level power source and a plurality of power supply units for supplying power to the servo motors from the common power source unit, said servo motor drive control device further comprising:
Dependencies are inferred from the claim text.