Motor control device and motor control method

Abstract

A motor control apparatus and a motor control method according to a first aspect of the invention are configured to instruct deenergization of a motor a predetermined period of time later than arrival of a subject to be driven by the motor at a speed measuring position. The predetermined period of time corresponds to a current speed of the motor upon arrival of the subject to be driven at the speed measuring position, and the speed measuring position is at a predetermined distance before a target stop position of the subject to be driven. The motor control apparatus according to a second aspect of the invention includes a position detector for detecting the position of paper driven by a paper feeding motor on the basis of output pulses of an encoder that rotates in response to rotation of the paper feeding motor, and a drive controller for controllably driving the paper feeding motor by additionally applying a current value to the paper feeding motor on the basis of a target value of the paper feeding amount and an output of the position detector. Further, a current value signal is generated that causes the paper to stop or rotate in the reverse direction from a normal paper feeding direction in response to output pulses of the encoder after the paper feeding amount reaches the target value. The drive controller also controllably drives the paper feeding motor in response to the current value signal.