Vibration wave motor drive control method, vibration wave motor drive control apparatus, apparatus including vibration wave motor, and image forming apparatus

摘要

This invention provides a control device for a vibration wave motor. In case 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 with 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 the feedback control at the generation of the variation in the load. IMAGE