Motor control device
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United States of America Patent
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Sep 1, 2015
Grant Date -
Mar 20, 2014
app pub date -
Apr 2, 2012
filing date -
May 24, 2011
priority date (Note) -
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Abstract
A motor control device includes an operation determination unit that determines whether a motor is in an operating state or in a stopped state based on an operation command signal or an operation signal and an amplitude estimation unit that, based on a determination result of the operation determination unit, sequentially estimates a vibration amplitude value from a control state quantity of a feedback control unit or a current control unit separately for a case where the motor is operated and a case where the motor is stopped and outputs the vibration amplitude value. A function of outputting an amplitude of a high-frequency vibration that occurs in a mechanical device including a control system as information useful for estimating an occurrence factor of the vibration is provided.
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