EXCITER FOR ELECTROMAGNETIC BRAKE

EXCITER FOR ELECTROMAGNETIC BRAKE

PURPOSE:To conduct operation having excellent efficiency by deciding brake release when currents change from increase to decrease within a fixed time after a time when an exciting command is emitted and outputting a brake operation signal. CONSTITUTION:Currents begin to be made to flow through an el...

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1. Verfasser: SHIMIZU TERUYOSHI
Format: Patent
Sprache:eng
Schlagworte:
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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creator SHIMIZU TERUYOSHI
description PURPOSE:To conduct operation having excellent efficiency by deciding brake release when currents change from increase to decrease within a fixed time after a time when an exciting command is emitted and outputting a brake operation signal. CONSTITUTION:Currents begin to be made to flow through an electromagnetic brake given a current reference after a time when a brake-coil exciting command BRC is transmitted, and are increased at a rotational time constant. When the armature of the electromagnetic brake attracts the brake by a current value kept within a fixed time limit, the induced voltage of the magnetic coil 3 of the electromagnetic brake is fluctuated, and currents are reduced temporarily. A brake operation detecting means 5 decides the brake as release of the brake when currents are reduced, and outputs a brake operation signal BRS. Accordingly, waste is eliminated in the cycle time of a motion at the time of application, in which the operation and stoppage of a motor are repeated frequently, thus conducting a motion having excellent efficiency.
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CONSTITUTION:Currents begin to be made to flow through an electromagnetic brake given a current reference after a time when a brake-coil exciting command BRC is transmitted, and are increased at a rotational time constant. When the armature of the electromagnetic brake attracts the brake by a current value kept within a fixed time limit, the induced voltage of the magnetic coil 3 of the electromagnetic brake is fluctuated, and currents are reduced temporarily. A brake operation detecting means 5 decides the brake as release of the brake when currents are reduced, and outputs a brake operation signal BRS. 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CONSTITUTION:Currents begin to be made to flow through an electromagnetic brake given a current reference after a time when a brake-coil exciting command BRC is transmitted, and are increased at a rotational time constant. When the armature of the electromagnetic brake attracts the brake by a current value kept within a fixed time limit, the induced voltage of the magnetic coil 3 of the electromagnetic brake is fluctuated, and currents are reduced temporarily. A brake operation detecting means 5 decides the brake as release of the brake when currents are reduced, and outputs a brake operation signal BRS. Accordingly, waste is eliminated in the cycle time of a motion at the time of application, in which the operation and stoppage of a motor are repeated frequently, thus conducting a motion having excellent efficiency.</abstract><oa>free_for_read</oa></addata></record>
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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
title EXCITER FOR ELECTROMAGNETIC BRAKE
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