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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Main Author | |
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Format | Patent |
Language | English |
Published |
12.05.2014
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Subjects | |
Online Access | Get full text |
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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. |
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Bibliography: | Application Number: JP20120233817 |