Motor control device, motor control system, runaway state detection method, and program

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.

Dependencies are inferred from the claim text.