Motor drive control device and motor drive control method
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United States of America Patent
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May 12, 2020
Grant Date -
Dec 6, 2018
app pub date -
May 24, 2018
filing date -
May 31, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
A motor drive control device includes: a control circuit unit for outputting a drive control signal for performing advance-angle control of a motor to drive the motor; a motor driving unit for outputting a drive signal to the motor with a phase based on the drive control signal output from the control circuit unit to drive the motor; and a current detecting circuit for detecting a voltage value corresponding to a drive current of the motor, wherein the control circuit unit detects a cross-timing between the voltage value detected by the current detecting circuit and each of two or more reference voltage values, and performs the advance-angle control based on a detection result of the cross-timing to adjust a phase of the drive current.
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