Servo control device having function of automatically adjusting control system with autonomous stabilization
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United States of America Patent
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Oct 23, 2018
Grant Date -
Oct 19, 2017
app pub date -
Mar 23, 2017
filing date -
Apr 13, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A servo control device according to the present invention includes a speed command generation unit, a torque command generation unit, a speed detection unit, a speed control loop, a speed control gain setting unit for setting a speed control gain for the speed control loop, a sinusoidal disturbance input unit for performing a sinusoidal sweep on the speed control loop, a frequency characteristic calculation unit, and a gain adjustment unit. When the speed control loop has fallen into an oscillation state and has become unstable owing to the increased speed control gain, the speed control gain is reduced and the sinusoidal sweep is temporarily stopped. After the speed control loop is stabilized using the speed control gain which is lower than in the unstable state, the sinusoidal sweep is restarted.
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