Motor control device

Abstract

Provided is technology that, in orientation control of an induction motor, makes it possible to detect correct acceleration/deceleration and stop a rotation shaft at a specific target position in a shorter time. The present invention is a motor control device that controls an induction motor for driving a rotation shaft and that performs orientation control to stop the rotating rotation shaft at a target position, said motor control device comprising: a speed comparison unit that calculates the difference between the actual speed of the rotation shaft and a speed command; a speed command calculation unit that, when the absolute value of the difference is less than a predetermined threshold value, changes the speed command so that the absolute value of the difference becomes greater than or equal to the threshold value; an acceleration command calculation unit that calculates an acceleration command during the orientation control on the basis of acceleration/deceleration which is calculated from the actual speed of the rotation shaft when the speed command has been changed; and a trajectory calculation unit that, on the basis of the acceleration command, calculates the speed command and/or a position command until the target position is reached.

Dependencies are inferred from the claim text.