BRUSHLESS MOTOR DRIVING SYSTEM
PURPOSE:To suppress torque ripple by detecting variation of flux of a rotor magnet in the form of a sine wave, synthesizing a signal waveform for correcting torque ripple from thus detected outputs and then superposing the synthesized signal on a current control signal. CONSTITUTION:Torque ripple co...
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| creator | NANAE YUUICHI |
| description | PURPOSE:To suppress torque ripple by detecting variation of flux of a rotor magnet in the form of a sine wave, synthesizing a signal waveform for correcting torque ripple from thus detected outputs and then superposing the synthesized signal on a current control signal. CONSTITUTION:Torque ripple correcting signals are synthesized in a torque ripple correcting signal synthesizing circuit 18 and then a maximum value MAX and a minimum value MIN of HE are detected. The maximum value MAX is then inverted through an inverting circuit to produce a -MAX. The inverted maximum value -MAX is added to the minimum value MIN in an adding circuit thus producing a torque ripple correcting signal VTO. DC component is then regulated through external resistors R5, R6 to produce a torque ripple correcting signal VTIN to be superposed on a control signal. The torque ripple correcting signal VTIN is then superposed on a current control signal and the total current is increased synchronously with the dropping timing of torque ripple thus suppressing torque ripple. |
| format | Patent |
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CONSTITUTION:Torque ripple correcting signals are synthesized in a torque ripple correcting signal synthesizing circuit 18 and then a maximum value MAX and a minimum value MIN of HE are detected. The maximum value MAX is then inverted through an inverting circuit to produce a -MAX. The inverted maximum value -MAX is added to the minimum value MIN in an adding circuit thus producing a torque ripple correcting signal VTO. DC component is then regulated through external resistors R5, R6 to produce a torque ripple correcting signal VTIN to be superposed on a control signal. The torque ripple correcting signal VTIN is then superposed on a current control signal and the total current is increased synchronously with the dropping timing of torque ripple thus suppressing torque ripple.</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>1992</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&date=19920611&DB=EPODOC&CC=JP&NR=H04165984A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19920611&DB=EPODOC&CC=JP&NR=H04165984A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>NANAE YUUICHI</creatorcontrib><title>BRUSHLESS MOTOR DRIVING SYSTEM</title><description>PURPOSE:To suppress torque ripple by detecting variation of flux of a rotor magnet in the form of a sine wave, synthesizing a signal waveform for correcting torque ripple from thus detected outputs and then superposing the synthesized signal on a current control signal. CONSTITUTION:Torque ripple correcting signals are synthesized in a torque ripple correcting signal synthesizing circuit 18 and then a maximum value MAX and a minimum value MIN of HE are detected. The maximum value MAX is then inverted through an inverting circuit to produce a -MAX. The inverted maximum value -MAX is added to the minimum value MIN in an adding circuit thus producing a torque ripple correcting signal VTO. DC component is then regulated through external resistors R5, R6 to produce a torque ripple correcting signal VTIN to be superposed on a control signal. The torque ripple correcting signal VTIN is then superposed on a current control signal and the total current is increased synchronously with the dropping timing of torque ripple thus suppressing torque ripple.</description><subject>CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS</subject><subject>CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS</subject><subject>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</subject><subject>ELECTRICITY</subject><subject>GENERATION</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1992</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZJBzCgoN9vBxDQ5W8PUP8Q9ScAnyDPP0c1cIjgwOcfXlYWBNS8wpTuWF0twMim6uIc4euqkF-fGpxQWJyal5qSXxXgEeBiaGZqaWFiaOxsSoAQDclyH1</recordid><startdate>19920611</startdate><enddate>19920611</enddate><creator>NANAE YUUICHI</creator><scope>EVB</scope></search><sort><creationdate>19920611</creationdate><title>BRUSHLESS MOTOR DRIVING SYSTEM</title><author>NANAE YUUICHI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPH04165984A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1992</creationdate><topic>CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS</topic><topic>CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS</topic><topic>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</topic><topic>ELECTRICITY</topic><topic>GENERATION</topic><toplevel>online_resources</toplevel><creatorcontrib>NANAE YUUICHI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>NANAE YUUICHI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>BRUSHLESS MOTOR DRIVING SYSTEM</title><date>1992-06-11</date><risdate>1992</risdate><abstract>PURPOSE:To suppress torque ripple by detecting variation of flux of a rotor magnet in the form of a sine wave, synthesizing a signal waveform for correcting torque ripple from thus detected outputs and then superposing the synthesized signal on a current control signal. CONSTITUTION:Torque ripple correcting signals are synthesized in a torque ripple correcting signal synthesizing circuit 18 and then a maximum value MAX and a minimum value MIN of HE are detected. The maximum value MAX is then inverted through an inverting circuit to produce a -MAX. The inverted maximum value -MAX is added to the minimum value MIN in an adding circuit thus producing a torque ripple correcting signal VTO. DC component is then regulated through external resistors R5, R6 to produce a torque ripple correcting signal VTIN to be superposed on a control signal. The torque ripple correcting signal VTIN is then superposed on a current control signal and the total current is increased synchronously with the dropping timing of torque ripple thus suppressing torque ripple.</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 | BRUSHLESS MOTOR DRIVING SYSTEM |
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