METHOD FOR CONTROLLING MOTOR ROTATING SPEED, DEVICE THEREFOR AND RECORDING OR REPRODUCING DEVICE
PURPOSE:To accurately execute a servo control by obtaining a mean value at each interval of 1/n rotation of a rotary encoder and obtaining a required motor rotating speed control signal with this value as a reference value. CONSTITUTION:In this recording or reproducing device, traveling information...
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| creator | NAKANO YOSHITOMO |
| description | PURPOSE:To accurately execute a servo control by obtaining a mean value at each interval of 1/n rotation of a rotary encoder and obtaining a required motor rotating speed control signal with this value as a reference value. CONSTITUTION:In this recording or reproducing device, traveling information of a magnetic tape 1 is obtained by the rotary encoder 12, and a servo control signal I is calculated by a motor revolving speed control part 21 based on this information. Then, this servo control signal I is converted into a voltage value corresponding to a frequency by an f-v converting part 22, and this value is given as a servo reference value J to a servo system between a motor servo part 23 and a reel motor 11, so as to control the revolving speed of the reel motor 11 to be a revolving speed for making the traveling speed of the magnetic tape 1 constant. In this case, the servo control that is more accurate than in the case of using traveling speed information by one rotation of the rotary encoder, can be carried out. |
| format | Patent |
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CONSTITUTION:In this recording or reproducing device, traveling information of a magnetic tape 1 is obtained by the rotary encoder 12, and a servo control signal I is calculated by a motor revolving speed control part 21 based on this information. Then, this servo control signal I is converted into a voltage value corresponding to a frequency by an f-v converting part 22, and this value is given as a servo reference value J to a servo system between a motor servo part 23 and a reel motor 11, so as to control the revolving speed of the reel motor 11 to be a revolving speed for making the traveling speed of the magnetic tape 1 constant. In this case, the servo control that is more accurate than in the case of using traveling speed information by one rotation of the rotary encoder, can be carried out.</description><edition>6</edition><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 ; INFORMATION STORAGE ; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER ; PHYSICS</subject><creationdate>1995</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=19950728&DB=EPODOC&CC=JP&NR=H07192353A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76419</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19950728&DB=EPODOC&CC=JP&NR=H07192353A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>NAKANO YOSHITOMO</creatorcontrib><title>METHOD FOR CONTROLLING MOTOR ROTATING SPEED, DEVICE THEREFOR AND RECORDING OR REPRODUCING DEVICE</title><description>PURPOSE:To accurately execute a servo control by obtaining a mean value at each interval of 1/n rotation of a rotary encoder and obtaining a required motor rotating speed control signal with this value as a reference value. CONSTITUTION:In this recording or reproducing device, traveling information of a magnetic tape 1 is obtained by the rotary encoder 12, and a servo control signal I is calculated by a motor revolving speed control part 21 based on this information. Then, this servo control signal I is converted into a voltage value corresponding to a frequency by an f-v converting part 22, and this value is given as a servo reference value J to a servo system between a motor servo part 23 and a reel motor 11, so as to control the revolving speed of the reel motor 11 to be a revolving speed for making the traveling speed of the magnetic tape 1 constant. In this case, the servo control that is more accurate than in the case of using traveling speed information by one rotation of the rotary encoder, can be carried out.</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><subject>INFORMATION STORAGE</subject><subject>INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER</subject><subject>PHYSICS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1995</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNi0EKwjAQRbNxIeodxr2CGkRchmRqKm0mTEe3tUhciRbq_dGgB3D1eZ_3xupSo3hyUBCDpSBMVVWGA9Qkn4dJjGRsIqJbgMNzaRHEI2MuTHDAaIldlnKAkcmdbMavPFWjW3cf0uy3EzUvUKxfpv7ZpqHvrumRXu0x-tVuvd_orTb6H-cNickzoA</recordid><startdate>19950728</startdate><enddate>19950728</enddate><creator>NAKANO YOSHITOMO</creator><scope>EVB</scope></search><sort><creationdate>19950728</creationdate><title>METHOD FOR CONTROLLING MOTOR ROTATING SPEED, DEVICE THEREFOR AND RECORDING OR REPRODUCING DEVICE</title><author>NAKANO YOSHITOMO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPH07192353A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1995</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><topic>INFORMATION STORAGE</topic><topic>INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER</topic><topic>PHYSICS</topic><toplevel>online_resources</toplevel><creatorcontrib>NAKANO YOSHITOMO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>NAKANO YOSHITOMO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>METHOD FOR CONTROLLING MOTOR ROTATING SPEED, DEVICE THEREFOR AND RECORDING OR REPRODUCING DEVICE</title><date>1995-07-28</date><risdate>1995</risdate><abstract>PURPOSE:To accurately execute a servo control by obtaining a mean value at each interval of 1/n rotation of a rotary encoder and obtaining a required motor rotating speed control signal with this value as a reference value. CONSTITUTION:In this recording or reproducing device, traveling information of a magnetic tape 1 is obtained by the rotary encoder 12, and a servo control signal I is calculated by a motor revolving speed control part 21 based on this information. Then, this servo control signal I is converted into a voltage value corresponding to a frequency by an f-v converting part 22, and this value is given as a servo reference value J to a servo system between a motor servo part 23 and a reel motor 11, so as to control the revolving speed of the reel motor 11 to be a revolving speed for making the traveling speed of the magnetic tape 1 constant. In this case, the servo control that is more accurate than in the case of using traveling speed information by one rotation of the rotary encoder, can be carried out.</abstract><edition>6</edition><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 INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER PHYSICS |
| title | METHOD FOR CONTROLLING MOTOR ROTATING SPEED, DEVICE THEREFOR AND RECORDING OR REPRODUCING DEVICE |
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