Patent ID: 7777441

Claim:
A motor controlling method, comprising: causing rotation of a motor to commence by applying an initial power that can cause movement of an object to be transported to commence, to the motor; obtaining a position of the object to be transported after the motor has been controlled so as to cause the object to be transported to move to a target position, based on a signal outputted in response to the rotation of the motor; correcting an initial power to be used when movement of the object to be transported is caused to commence a next time in response to a difference between the target position and the obtained position of the object to be transported; and when a motor is to be controlled so as to cause an object to be transported to move to a target position, measuring a drive time of the motor until the object to be transported is moved to the target position, wherein the correcting further comprises correcting the initial power to be used when movement of the object to be transported is caused to commence a next time, in response to a difference between a target drive time of when the object to be transported is to be moved to the target position and the obtained drive time.