METHOD AND APPARATUS FOR DRIVING A BRUSHLESS DC MOTOR

A DRIVE CIRCUIT (10) FOR A BRUSHLESS DC MOTOR (16) INCLUDES A SWITCH (20) CONSTRUCTED AND ARRANGED TO DRIVE THE MOTOR WITH A PULSE SIGNAL RESPONSIVE TO A CONTROL SIGNAL, AND CONTROL CIRCUITRY (24) COUPLED TO THE SWITCH (20) AND CONSTRUCTED AND ARRANGED TO GENERATE THE CONTROL SIGNAL RESPONSIVE TO RO...

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Bibliographic Details
Main Authors ROBIN LAURIE GETZ, DAVID EDWARD HANRAHAN
Format Patent
LanguageEnglish
Published 31.07.2009
Subjects
CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS
CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
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Summary:A DRIVE CIRCUIT (10) FOR A BRUSHLESS DC MOTOR (16) INCLUDES A SWITCH (20) CONSTRUCTED AND ARRANGED TO DRIVE THE MOTOR WITH A PULSE SIGNAL RESPONSIVE TO A CONTROL SIGNAL, AND CONTROL CIRCUITRY (24) COUPLED TO THE SWITCH (20) AND CONSTRUCTED AND ARRANGED TO GENERATE THE CONTROL SIGNAL RESPONSIVE TO ROTOR POSITION INFORMATION (18) FROM THE MOTOR SO AS TO SYNCHRONIZE THE PULSE SIGNAL TO THE ROTOR POSITION. A CURRENT SENSING DEVICE CAN BE USED TO PROVIDE THE ROTOR POSITION INFORMATION (18) TO THE CONTROL CIRCUITRY (24) BY SENSING CURRENT FLOWING THROUGH THE MOTOR.
Bibliography:Application Number: MY2002PI02386