Electricity: motive power systems – Positional servo systems – With protective or reliability increasing features
Reexamination Certificate
2009-09-04
2011-10-18
Ro, Bentsu (Department: 2837)
Electricity: motive power systems
Positional servo systems
With protective or reliability increasing features
C318S558000, C318S625000
Reexamination Certificate
active
08040097
ABSTRACT:
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.
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Iwashita Yasusuke
Kawamura Hiroyuki
Okita Tadashi
Ueno Yuuya
Fanuc Ltd
Lowe Hauptman & Ham & Berner, LLP
Ro Bentsu
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