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专利名称：Control unit发明人：Ken Miyagi申请号：US06/697421申请日：19850201公开号：US04605884A公开日：19860812
摘要：A control unit for a movable member comprises a motor for driving themovable member, a speed detector for detecting a rotating speed of the motor, areference signal generator, amplifiers of different gains for amplifying a signal
representing a phase difference between a speed signal from the speed detector and areference signal from the reference signal generator, a selector for selecting one of theoutputs of the amplifiers in accordance with the velocity signal and the reference signal,and a driver for driving the motor by the selected amplifier output.
申请人：CANON KABUSHIKI KAISHA
代理机构：Fitzpatrick, Cella, Harper & Scinto
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