Gyrokompass
To provide a gyro compass for the use of a high speed ship, in a gyro compass of the type having north-seeking means which is applied to support a gyro sphere or gyro case immersed in a liquid in a tank, a substantially first-order lag filter is provided in an azimuth follow-up loop or a damping loo...
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| creator | YAMAMOTO KANSHI FUKANO MICHIO KAWADA SHIN-ICHI HOJO TAKESHI |
| description | To provide a gyro compass for the use of a high speed ship, in a gyro compass of the type having north-seeking means which is applied to support a gyro sphere or gyro case immersed in a liquid in a tank, a substantially first-order lag filter is provided in an azimuth follow-up loop or a damping loop, the substantially first-order lag filter having a time constant TF which is approximately equal to a ratio C/kT of the viscosity torque coefficient C to the twisting torque coefficient kT of the torque produced between the tank and the gyro case. A speed error correcting means has a substantially first-order lag filter having a time constant which is approximately equal to that of the north-seeking means, and is applied to correct the output of azimuth indicator by a speed error correcting angle through the substantially first-order lag filter. |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_NO990038LL</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>NO990038LL</sourcerecordid><originalsourceid>FETCH-epo_espacenet_NO990038LL3</originalsourceid><addsrcrecordid>eNrjZOB2ryzKz87PLUgsLuZhYE1LzClO5YXS3Azybq4hzh66qQX58anFBYnJqXmpJfF-_paWBgbGFj4-xoRVAACXbB0t</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>Gyrokompass</title><source>esp@cenet</source><creator>YAMAMOTO KANSHI ; FUKANO MICHIO ; KAWADA SHIN-ICHI ; HOJO TAKESHI</creator><creatorcontrib>YAMAMOTO KANSHI ; FUKANO MICHIO ; KAWADA SHIN-ICHI ; HOJO TAKESHI</creatorcontrib><description>To provide a gyro compass for the use of a high speed ship, in a gyro compass of the type having north-seeking means which is applied to support a gyro sphere or gyro case immersed in a liquid in a tank, a substantially first-order lag filter is provided in an azimuth follow-up loop or a damping loop, the substantially first-order lag filter having a time constant TF which is approximately equal to a ratio C/kT of the viscosity torque coefficient C to the twisting torque coefficient kT of the torque produced between the tank and the gyro case. A speed error correcting means has a substantially first-order lag filter having a time constant which is approximately equal to that of the north-seeking means, and is applied to correct the output of azimuth indicator by a speed error correcting angle through the substantially first-order lag filter.</description><edition>6</edition><language>nor</language><subject>GYROSCOPIC INSTRUMENTS ; MEASURING ; MEASURING DISTANCES, LEVELS OR BEARINGS ; NAVIGATION ; PHOTOGRAMMETRY OR VIDEOGRAMMETRY ; PHYSICS ; SURVEYING ; TESTING</subject><creationdate>1999</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=19990713&DB=EPODOC&CC=NO&NR=990038L$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76293</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19990713&DB=EPODOC&CC=NO&NR=990038L$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>YAMAMOTO KANSHI</creatorcontrib><creatorcontrib>FUKANO MICHIO</creatorcontrib><creatorcontrib>KAWADA SHIN-ICHI</creatorcontrib><creatorcontrib>HOJO TAKESHI</creatorcontrib><title>Gyrokompass</title><description>To provide a gyro compass for the use of a high speed ship, in a gyro compass of the type having north-seeking means which is applied to support a gyro sphere or gyro case immersed in a liquid in a tank, a substantially first-order lag filter is provided in an azimuth follow-up loop or a damping loop, the substantially first-order lag filter having a time constant TF which is approximately equal to a ratio C/kT of the viscosity torque coefficient C to the twisting torque coefficient kT of the torque produced between the tank and the gyro case. A speed error correcting means has a substantially first-order lag filter having a time constant which is approximately equal to that of the north-seeking means, and is applied to correct the output of azimuth indicator by a speed error correcting angle through the substantially first-order lag filter.</description><subject>GYROSCOPIC INSTRUMENTS</subject><subject>MEASURING</subject><subject>MEASURING DISTANCES, LEVELS OR BEARINGS</subject><subject>NAVIGATION</subject><subject>PHOTOGRAMMETRY OR VIDEOGRAMMETRY</subject><subject>PHYSICS</subject><subject>SURVEYING</subject><subject>TESTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1999</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZOB2ryzKz87PLUgsLuZhYE1LzClO5YXS3Azybq4hzh66qQX58anFBYnJqXmpJfF-_paWBgbGFj4-xoRVAACXbB0t</recordid><startdate>19990713</startdate><enddate>19990713</enddate><creator>YAMAMOTO KANSHI</creator><creator>FUKANO MICHIO</creator><creator>KAWADA SHIN-ICHI</creator><creator>HOJO TAKESHI</creator><scope>EVB</scope></search><sort><creationdate>19990713</creationdate><title>Gyrokompass</title><author>YAMAMOTO KANSHI ; FUKANO MICHIO ; KAWADA SHIN-ICHI ; HOJO TAKESHI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_NO990038LL3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>nor</language><creationdate>1999</creationdate><topic>GYROSCOPIC INSTRUMENTS</topic><topic>MEASURING</topic><topic>MEASURING DISTANCES, LEVELS OR BEARINGS</topic><topic>NAVIGATION</topic><topic>PHOTOGRAMMETRY OR VIDEOGRAMMETRY</topic><topic>PHYSICS</topic><topic>SURVEYING</topic><topic>TESTING</topic><toplevel>online_resources</toplevel><creatorcontrib>YAMAMOTO KANSHI</creatorcontrib><creatorcontrib>FUKANO MICHIO</creatorcontrib><creatorcontrib>KAWADA SHIN-ICHI</creatorcontrib><creatorcontrib>HOJO TAKESHI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>YAMAMOTO KANSHI</au><au>FUKANO MICHIO</au><au>KAWADA SHIN-ICHI</au><au>HOJO TAKESHI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Gyrokompass</title><date>1999-07-13</date><risdate>1999</risdate><abstract>To provide a gyro compass for the use of a high speed ship, in a gyro compass of the type having north-seeking means which is applied to support a gyro sphere or gyro case immersed in a liquid in a tank, a substantially first-order lag filter is provided in an azimuth follow-up loop or a damping loop, the substantially first-order lag filter having a time constant TF which is approximately equal to a ratio C/kT of the viscosity torque coefficient C to the twisting torque coefficient kT of the torque produced between the tank and the gyro case. A speed error correcting means has a substantially first-order lag filter having a time constant which is approximately equal to that of the north-seeking means, and is applied to correct the output of azimuth indicator by a speed error correcting angle through the substantially first-order lag filter.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| subjects | GYROSCOPIC INSTRUMENTS MEASURING MEASURING DISTANCES, LEVELS OR BEARINGS NAVIGATION PHOTOGRAMMETRY OR VIDEOGRAMMETRY PHYSICS SURVEYING TESTING |
| title | Gyrokompass |
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