Electricity: motive power systems – Positional servo systems – With stabilizing features
Reexamination Certificate
2008-06-25
2010-10-05
Ip, Paul (Department: 2837)
Electricity: motive power systems
Positional servo systems
With stabilizing features
C318S611000, C318S621000, C318S568220, C700S188000
Reexamination Certificate
active
07808199
ABSTRACT:
A control apparatus of the present invention comprising a control unit outputting a control signal controlling a servo motor and suppressing natural vibration of a controlled object including a motor and a machine driven by the motor while controlling the controlled object, comprising a frequency analysis unit analyzing a frequency component included in a torque command, an analysis control unit controlling the start or stopping of the frequency analysis unit, a detection unit detecting a natural frequency of the controlled object from an analysis result of the frequency analysis unit, a-band rejection filter receiving as input the torque command, stripping the command of the natural frequency component, and outputting the resultant command to the motor through a current control unit and servo amplifier, and a filter characteristic setting unit setting the frequency to be stripped at the filter based on the natural frequency detected by the detection unit.
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Notice of Reasons for Rejection for JP2007-174296 mailed Oct. 7, 2008.
European Search Report of Application No. 08011541.3-2206 / 2012206 mailed Mar. 5, 2010.
Okita Tadashi
Sonoda Naoto
Toyozawa Yukio
Fanuc Ltd
Ip Paul
Lowe Hauptman & Ham & Berner, LLP
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