Motor controller and industrial machine
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United States of America Patent
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Apr 16, 2019
Grant Date -
Jan 25, 2018
app pub date -
Feb 2, 2016
filing date -
Feb 4, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
A motor controller includes: an error suppression compensation unit that outputs an error suppression signal for driving the motor such that a difference between the position command signal and a signal based on the motor position signal equals zero; an acceleration extraction unit that outputs an acceleration component of a natural frequency of a stand from a stand vibration signal; an acceleration compensation unit that outputs a proportional compensation signal obtained by multiplying the stand acceleration signal by a proportional gain; a machine end correction unit that outputs a machine end correction signal, and decreases an amplitude of vibration at the machine end relative position; and an addition unit that outputs a signal obtained by adding the machine end correction signal to the error suppression signal.
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