Motor control method and motor control apparatus

摘要

An edge detector 15 of an ASIC 3 detects a pass timing signal indicating a timing in which slits of a slit plate pass light emitting and receiving elements of a photo interrupter, and the rotation direction of a transfer roller based on phase-A and phase-B signals from an encoder 56. A position counter 16 counts the pass timing signal in accordance with the rotation direction of the transfer roller. When a count comparator 17 detects the agreement of the count value of the position counter 16 with the set value of a stop position setting register 12, a stop position processor 22 counts a delay time, and outputs a stop command signal of an LF motor to a PWM generator 8 in the timing of agreement with the set value of a time setting register 11.