CONTROL APPARATUS FOR DYNAMICALLY ADJUSTING PHASE SWITCHING OF THE DC MOTOR AND METHOD THEREOF
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United States of America Patent
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Issued Date -
Jan 19, 2017
app pub date -
Nov 20, 2015
filing date -
Jul 17, 2015
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Abstract
Disclosed are a control apparatus for dynamically adjusting a phase switching of a DC motor and a method thereof. A rotor in the DC motor is divided into 2M pole areas, wherein M is a positive integer not less than 1. The control apparatus comprises a phase detector, a current detector, a control circuit and a driving circuit. The phase detector detects the phase switching state of the pole areas to generate a standard phase signal. The current detector detects a current flowing through the DC motor in one of switching points of the standard phase signal to generate a current detection value. The control circuit periodically outputs 2M drive signals, and determines to perform dynamically adjusting operation on the timing sequence of the drive signals according to the current detection value. The driving circuit receives the drive signals to perform the phase switching for driving the DC motor.
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