MOTOR CONTROLLER

PURPOSE:To protect a driving circuit by obtaining maximum values both accelerations of a speed command and a speed feedback signal, obtaining difference decision times in which the difference becomes a decided value or more and interrupting a motor supplying power when the times exceed an oscillatio...

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Bibliographic Details
Main Authors HASHIKAWA MASAKI, MITANI SHIGEO, KAKE SHINOBU, KINOSHITA HISASHI
Format Patent
LanguageEnglish
Published 21.10.1991
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:PURPOSE:To protect a driving circuit by obtaining maximum values both accelerations of a speed command and a speed feedback signal, obtaining difference decision times in which the difference becomes a decided value or more and interrupting a motor supplying power when the times exceed an oscillation decision value. CONSTITUTION:An acceleration calculator 16 calculates the accelerations of a speed command and a feedback signal, then calculates the maximum values of the accelerations, and input it to a predetermined area. A power interruption controller 17 calculates the times in which the difference of both the maximum values becomes a decided value or more at each sampling time, and outputs an interruption signal S to a power interrupting circuit 14 when it decides that the times exceeds an oscillation decision value.
Bibliography:Application Number: JP19900031270