MOTOR CONTROL DEVICE, MOTOR CONTROL SYSTEM, RUNAWAY STATE DETECTION METHOD, AND PROGRAM
Number of patents in Portfolio can not be more than 2000
United States of America
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Issued Date -
Feb 13, 2020
app pub date -
Jan 29, 2018
filing date -
Jan 29, 2018
priority date (Note) -
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status (Latency Note)
Importance
Abstract
Provided is a motor control device generating a torque command such that a detection speed of a motor matches a command speed, and controlling the motor. The motor control device includes: a torque command differential component taking a differential of the torque command and obtaining a torque command differential value; a motor actual speed second order differential component taking a second order differential of the detection speed of the motor and obtaining a motor jerk; and a runaway detection component determining that the motor is in a runaway state in a case where an abnormal state in which a sign of the motor jerk and a sign of the torque command differential value do not match continues for a predetermined time or more. Accordingly, the runaway of the motor can be detected in a short time while the erroneous detection can be suppressed.
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