STEPPING MOTOR DRIVE DEVICE AND DISC DEVICE HAVING THE SAME

PROBLEM TO BE SOLVED: To reduce erroneous determination of whether a stepping motor is rotating or stopping.SOLUTION: The stepping motor drive device stops application of a voltage to a stepping motor 30 at a lapse of a predetermined time after a voltage applied to a stepping motor 30 reaches a pred...

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Bibliographic Details
Main Author OTA KENZO
Format Patent
LanguageEnglish
Published 12.05.2014
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
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:PROBLEM TO BE SOLVED: To reduce erroneous determination of whether a stepping motor is rotating or stopping.SOLUTION: The stepping motor drive device stops application of a voltage to a stepping motor 30 at a lapse of a predetermined time after a voltage applied to a stepping motor 30 reaches a predetermined value. During a stopping period, a counterelectromotive voltage of the stepping motor is measured, and from a value of the counterelectromotive voltage, rotation/stopping of the stepping motor is grasped.
Bibliography:Application Number: JP20120233817