BACK ELECTROMOTIVE FORCE DETECTION CIRCUIT, AND MOTOR DRIVING CONTROL APPARATUS AND MOTOR USING THE SAME

BACK ELECTROMOTIVE FORCE DETECTION CIRCUIT, AND MOTOR DRIVING CONTROL APPARATUS AND MOTOR USING THE SAME

PROBLEM TO BE SOLVED: To provide a back electromotive force detection circuit, and a motor driving control apparatus and a motor using the same.SOLUTION: A back electromotive force detection circuit includes: a voltage generating unit generating a voltage in inverse proportion to a duty ratio of a p...

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1. Verfasser: LEE SOO-WOON
Format: Patent
Sprache:eng
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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 LEE SOO-WOON
description PROBLEM TO BE SOLVED: To provide a back electromotive force detection circuit, and a motor driving control apparatus and a motor using the same.SOLUTION: A back electromotive force detection circuit includes: a voltage generating unit generating a voltage in inverse proportion to a duty ratio of a pulse width modulation (PWM) signal; a variable amplifier controlling a gain according to the voltage generated by the voltage generating unit, and amplifying back electromotive force according to the controlled gain; and a comparator comparing an output from the variable amplifier with a pre-set reference signal, and outputting a zero-crossing signal of the back electromotive force.
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a variable amplifier controlling a gain according to the voltage generated by the voltage generating unit, and amplifying back electromotive force according to the controlled gain; and a comparator comparing an output from the variable amplifier with a pre-set reference signal, and outputting a zero-crossing signal of the back electromotive force.</description><language>eng</language><subject>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</subject><creationdate>2014</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20140703&amp;DB=EPODOC&amp;CC=JP&amp;NR=2014124072A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20140703&amp;DB=EPODOC&amp;CC=JP&amp;NR=2014124072A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>LEE SOO-WOON</creatorcontrib><title>BACK ELECTROMOTIVE FORCE DETECTION CIRCUIT, AND MOTOR DRIVING CONTROL APPARATUS AND MOTOR USING THE SAME</title><description>PROBLEM TO BE SOLVED: To provide a back electromotive force detection circuit, and a motor driving control apparatus and a motor using the same.SOLUTION: A back electromotive force detection circuit includes: a voltage generating unit generating a voltage in inverse proportion to a duty ratio of a pulse width modulation (PWM) signal; 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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 BACK ELECTROMOTIVE FORCE DETECTION CIRCUIT, AND MOTOR DRIVING CONTROL APPARATUS AND MOTOR USING THE SAME
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