Motor driving controller and motor driving control method
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United States of America Patent
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Jul 23, 2019
Grant Date -
Aug 3, 2017
app pub date -
Jan 12, 2017
filing date -
Jan 28, 2016
priority date (Note) -
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Abstract
A motor driving controller, comprising a rotary position detection device generating a position detection signal corresponding to a rotary position of a rotor of a motor; a control circuit selecting a first driving control signal for performing rectangular wave driving or a second driving control signal for performing driving with an overlapped energization period longer than an overlapped energization period in the rectangular wave driving, based on the position detection signal, thereby to output a driving control signal; and a motor driver outputting a driving signal to a stator coil of the motor based on the driving control signal, wherein the control circuit outputs the first driving control signal at time of starting, and the control circuit outputs the second driving control signal when a rotary state is detected on the basis of the position detection signal.
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