| 摘要 |
In a servo control apparatus in which a machine system is driven by a servo motor, a phase compensation device is provided. The phase compensating device calculates a speed component (phase delay compensation signal) corresponding to a phase delay caused by a mechanical resonance suppressing filter which is provided so as to suppress resonance and mechanical vibrations, produced by a characteristic frequency owned by the machine system. While such a signal obtained by adding this speed component (phase delay compensation signal) to an actual motor speed is used as a speed feedback signal for a control operation, unstable conditions of a servo system, which are caused by the phase delay caused when the mechanical resonance filter is applied, are suppressed, and a high gain of the servo control apparatus is realized.
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