DRIVING DEVICE FOR MOTOR

PURPOSE:To reduce current concentration on the starting of the motors, and to eliminate the danger of the simultaneous starting of a plurality of the motors by turning the second motor when the speed of revolution of the first motor reaches a fixed value or more. CONSTITUTION:A signal (a) of frequen...

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Bibliographic Details
Main Authors KOBORI YASUNORI, OKAMOTO CHIKAYUKI, GOTOU KATSUHIKO
Format Patent
LanguageEnglish
Published 21.02.1984
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
INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
MEASURING
MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK
PHYSICS
TESTING
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Summary:PURPOSE:To reduce current concentration on the starting of the motors, and to eliminate the danger of the simultaneous starting of a plurality of the motors by turning the second motor when the speed of revolution of the first motor reaches a fixed value or more. CONSTITUTION:A signal (a) of frequency proportional to the speed of revolution of the motor 1 detected by a tacho-meter 1a is transmitted over a monostable multivibrator 6, and a pulse signal (c) of fixed pulse width is obtained in the repetitive frequency of the input signal (a). Voltage Va is generated by a frequency-voltage converter 7 from the signal (c), and transmitted over the voltage comparator 10 of a speed detecting circuit 14. When voltage Va reaches reference voltage VRFF or less, output voltage Vb reaches a ''H'' level, the reset terminal R of a FF 18 is triggered and a Q output reaches a ''H'' level, and a driving amplifier 9 is supplied with the voltage Vc of the FF and a capstan motor 3 is started.
Bibliography:Application Number: JP19820140947