Drive control method for vibration wave motor, device therefor, and apparatus and image forming apparatus equipped with vibration wave motor

摘要

In a control device for a vibration wave motor, in the case where the device executes an operation involving a large variation in the load while the motor is controlled at a target speed by the driving frequency using a feedback system, such feedback control is inhibited or the response of the feedback control is restricted in order to avoid the drawback resulting from feedback control at the time of generation of the variation in the load.