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1. 发明专利

JP2012070605A Motor drive circuit 审中-公开
标题翻译：电机驱动电路
公开(公告)号：JP2012070605A
公开(公告)日：2012-04-05
申请号：JP2010215703
申请日：2010-09-27
申请人： On Semiconductor Trading Ltd , オンセミコンダクター・トレーディング・リミテッド
发明人： TAKAMORI YASUYUKI , MURAGI MASASHI
IPC分类号： H02P6/20
摘要： PROBLEM TO BE SOLVED: To start a motor quickly.SOLUTION: A motor drive circuit includes: a drive circuit 1 for outputting a drive signal to rotate a motor in a normal direction or reverse direction in accordance with a rotation direction indication signal indicating a normal or reverse rotation of the motor; a rotational frequency comparison circuit 4 for determining whether or not the rotational frequency of the motor is higher than a reference rotational frequency; a short brake control circuit 2 for controlling braking in accordance with the comparison result of the rotational frequency comparison circuit 4 when the rotation direction indication signal changes; an energized phase order changeover control circuit 3 for changing the direction of rotation; and a determination circuit 110 for controlling the drive circuit 1 such that the direction of rotation of the motor is changed without the action of braking the motor irrespective of the comparison result of the rotational frequency comparison circuit 4 if the rotation direction indication signal changes while the motor is stopped.
摘要翻译：要解决的问题：快速启动电机。电动机驱动电路包括：驱动电路1，用于根据指示电动机的正转或反转的旋转方向指示信号，输出驱动信号以使电动机沿正向或反向旋转; 用于确定电动机的旋转频率是否高于参考旋转频率的旋转频率比较电路4; 当旋转方向指示信号改变时，根据旋转频率比较电路4的比较结果来控制制动的短路制动控制电路2; 用于改变旋转方向的通电相位切换控制电路3; 以及确定电路110，用于如果旋转方向指示信号改变而不管旋转频率比较电路4的比较结果如何而不影响电动机的制动而改变电动机的旋转方向，电机停止。版权所有（C）2012，JPO＆INPIT

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