Dynamic performance of the SRI Maglev vehicle
The stability and ride quality of a small scale MAGLEV test vehicle were determined by measuring its motions in five degrees of freedom during levitated flight. Various offsets were introduced into the guideway to stimulate strongly different modes of oscillation and to search for instabilities. The...
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Veröffentlicht in: | IEEE transactions on magnetics 1974-09, Vol.10 (3), p.451-457 |
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description | The stability and ride quality of a small scale MAGLEV test vehicle were determined by measuring its motions in five degrees of freedom during levitated flight. Various offsets were introduced into the guideway to stimulate strongly different modes of oscillation and to search for instabilities. These offsets, that were up to 25% of the equilibrium suspension height, induced motions that were analyzed to evaluate both passive and active damping systems used on the vehicle. In more than thirty tests of the vehicle, including stimulations of the heave, roll, pitch, yaw, and slip modes of oscillation, no instabilities were observed in any degree of freedom whether using passive or active damping. The active damping system, used in conjunction with the passive system, provided greater stability and ride quality than the passive system alone. The passive system, however, provided enough damping to achieve stability and is therefore a desirable back-up in the event of a failure in the active control system. The tests were simulated on a computer using a completely nonlinear dynamics model and provided good approximations to the data. Extrapolations to full-size vehicles have not been made. |
doi_str_mv | 10.1109/TMAG.1974.1058442 |
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Various offsets were introduced into the guideway to stimulate strongly different modes of oscillation and to search for instabilities. These offsets, that were up to 25% of the equilibrium suspension height, induced motions that were analyzed to evaluate both passive and active damping systems used on the vehicle. In more than thirty tests of the vehicle, including stimulations of the heave, roll, pitch, yaw, and slip modes of oscillation, no instabilities were observed in any degree of freedom whether using passive or active damping. The active damping system, used in conjunction with the passive system, provided greater stability and ride quality than the passive system alone. The passive system, however, provided enough damping to achieve stability and is therefore a desirable back-up in the event of a failure in the active control system. The tests were simulated on a computer using a completely nonlinear dynamics model and provided good approximations to the data. Extrapolations to full-size vehicles have not been made.</description><identifier>ISSN: 0018-9464</identifier><identifier>EISSN: 1941-0069</identifier><identifier>DOI: 10.1109/TMAG.1974.1058442</identifier><identifier>CODEN: IEMGAQ</identifier><language>eng</language><publisher>IEEE</publisher><subject>Computational modeling ; Computer simulation ; Control systems ; Damping ; Magnetic levitation ; Motion analysis ; Stability ; Testing ; Vehicle dynamics ; Vehicles</subject><ispartof>IEEE transactions on magnetics, 1974-09, Vol.10 (3), p.451-457</ispartof><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c356t-410a535b2e63d89b866a9b31a24c4f21466e0cd410b16b5a88c3f1d1c83504933</citedby><cites>FETCH-LOGICAL-c356t-410a535b2e63d89b866a9b31a24c4f21466e0cd410b16b5a88c3f1d1c83504933</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/1058442$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,780,784,796,27924,27925,54758</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/1058442$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Coffey, H.</creatorcontrib><creatorcontrib>Solinsky, J.</creatorcontrib><creatorcontrib>Colton, J.</creatorcontrib><creatorcontrib>Woodbury, J.</creatorcontrib><title>Dynamic performance of the SRI Maglev vehicle</title><title>IEEE transactions on magnetics</title><addtitle>TMAG</addtitle><description>The stability and ride quality of a small scale MAGLEV test vehicle were determined by measuring its motions in five degrees of freedom during levitated flight. Various offsets were introduced into the guideway to stimulate strongly different modes of oscillation and to search for instabilities. These offsets, that were up to 25% of the equilibrium suspension height, induced motions that were analyzed to evaluate both passive and active damping systems used on the vehicle. In more than thirty tests of the vehicle, including stimulations of the heave, roll, pitch, yaw, and slip modes of oscillation, no instabilities were observed in any degree of freedom whether using passive or active damping. The active damping system, used in conjunction with the passive system, provided greater stability and ride quality than the passive system alone. The passive system, however, provided enough damping to achieve stability and is therefore a desirable back-up in the event of a failure in the active control system. The tests were simulated on a computer using a completely nonlinear dynamics model and provided good approximations to the data. Extrapolations to full-size vehicles have not been made.</description><subject>Computational modeling</subject><subject>Computer simulation</subject><subject>Control systems</subject><subject>Damping</subject><subject>Magnetic levitation</subject><subject>Motion analysis</subject><subject>Stability</subject><subject>Testing</subject><subject>Vehicle dynamics</subject><subject>Vehicles</subject><issn>0018-9464</issn><issn>1941-0069</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1974</creationdate><recordtype>article</recordtype><recordid>eNqNkE1PwkAURSdGExH9AcZNV-6K8-aLmSVBRRKIieJ6Mp2-Sk1LcQZI-Pe2KQuXrF5u3rl3cQi5BzoCoOZptZzMRmDGYgRUaiHYBRmAEZBSqswlGVAKOjVCiWtyE-NPG4UEOiDp83Hj6tInWwxFE2q38Zg0RbJbY_L5MU-W7rvCQ3LAdekrvCVXhasi3p3ukHy9vqymb-nifTafThap51LtUgHUSS4zhorn2mRaKWcyDo4JLwoGQimkPm-xDFQmndaeF5CD11xSYTgfksd-dxua3z3Gna3L6LGq3AabfbTMMMX0-AxQs7E24gyQAVPG0BaEHvShiTFgYbehrF04WqC2U2071bZTbU-q285D3ykR8R_ff_8A5kl3Kg</recordid><startdate>19740901</startdate><enddate>19740901</enddate><creator>Coffey, H.</creator><creator>Solinsky, J.</creator><creator>Colton, J.</creator><creator>Woodbury, J.</creator><general>IEEE</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7SP</scope><scope>7TB</scope><scope>FR3</scope><scope>KR7</scope></search><sort><creationdate>19740901</creationdate><title>Dynamic performance of the SRI Maglev vehicle</title><author>Coffey, H. ; Solinsky, J. ; Colton, J. ; Woodbury, J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c356t-410a535b2e63d89b866a9b31a24c4f21466e0cd410b16b5a88c3f1d1c83504933</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1974</creationdate><topic>Computational modeling</topic><topic>Computer simulation</topic><topic>Control systems</topic><topic>Damping</topic><topic>Magnetic levitation</topic><topic>Motion analysis</topic><topic>Stability</topic><topic>Testing</topic><topic>Vehicle dynamics</topic><topic>Vehicles</topic><toplevel>online_resources</toplevel><creatorcontrib>Coffey, H.</creatorcontrib><creatorcontrib>Solinsky, J.</creatorcontrib><creatorcontrib>Colton, J.</creatorcontrib><creatorcontrib>Woodbury, J.</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Electronics & Communications Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>IEEE transactions on magnetics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Coffey, H.</au><au>Solinsky, J.</au><au>Colton, J.</au><au>Woodbury, J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Dynamic performance of the SRI Maglev vehicle</atitle><jtitle>IEEE transactions on magnetics</jtitle><stitle>TMAG</stitle><date>1974-09-01</date><risdate>1974</risdate><volume>10</volume><issue>3</issue><spage>451</spage><epage>457</epage><pages>451-457</pages><issn>0018-9464</issn><eissn>1941-0069</eissn><coden>IEMGAQ</coden><abstract>The stability and ride quality of a small scale MAGLEV test vehicle were determined by measuring its motions in five degrees of freedom during levitated flight. Various offsets were introduced into the guideway to stimulate strongly different modes of oscillation and to search for instabilities. These offsets, that were up to 25% of the equilibrium suspension height, induced motions that were analyzed to evaluate both passive and active damping systems used on the vehicle. In more than thirty tests of the vehicle, including stimulations of the heave, roll, pitch, yaw, and slip modes of oscillation, no instabilities were observed in any degree of freedom whether using passive or active damping. The active damping system, used in conjunction with the passive system, provided greater stability and ride quality than the passive system alone. The passive system, however, provided enough damping to achieve stability and is therefore a desirable back-up in the event of a failure in the active control system. The tests were simulated on a computer using a completely nonlinear dynamics model and provided good approximations to the data. Extrapolations to full-size vehicles have not been made.</abstract><pub>IEEE</pub><doi>10.1109/TMAG.1974.1058442</doi><tpages>7</tpages></addata></record> |
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subjects | Computational modeling Computer simulation Control systems Damping Magnetic levitation Motion analysis Stability Testing Vehicle dynamics Vehicles |
title | Dynamic performance of the SRI Maglev vehicle |
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