Ironless Loudspeakers
The paper notes the drawbacks of classical loudspeaker motors: the inductance varies with the coil's position, there is a reluctant effect, and eddy currents appear because of the iron in the motor. It then presents ironless structures of loudspeaker motors to eliminate these drawbacks. These s...
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| Veröffentlicht in: | IEEE transactions on magnetics 2007-08, Vol.43 (8), p.3371-3374 |
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| container_end_page | 3374 |
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| container_title | IEEE transactions on magnetics |
| container_volume | 43 |
| creator | Lemarquand, G. |
| description | The paper notes the drawbacks of classical loudspeaker motors: the inductance varies with the coil's position, there is a reluctant effect, and eddy currents appear because of the iron in the motor. It then presents ironless structures of loudspeaker motors to eliminate these drawbacks. These structures are studied with the use of Coulomb's model of permanent magnets, which affords analytical calculations. Thus, a design can be optimized to create a uniform, high-level induction in the space where the coil moves. |
| doi_str_mv | 10.1109/TMAG.2007.897739 |
| format | Article |
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It then presents ironless structures of loudspeaker motors to eliminate these drawbacks. These structures are studied with the use of Coulomb's model of permanent magnets, which affords analytical calculations. Thus, a design can be optimized to create a uniform, high-level induction in the space where the coil moves.</description><identifier>ISSN: 0018-9464</identifier><identifier>EISSN: 1941-0069</identifier><identifier>DOI: 10.1109/TMAG.2007.897739</identifier><identifier>CODEN: IEMGAQ</identifier><language>eng</language><publisher>New York, NY: IEEE</publisher><subject>Acoustics ; Coiling ; Coils ; Cross-disciplinary physics: materials science; rheology ; Eddy currents ; Electromagnetic actuators ; Electromagnetism ; Engineering Sciences ; Exact sciences and technology ; Force ; Inductance ; Iron ; Loudspeakers ; Magnetic flux ; Magnetism ; magnetostatics ; Materials science ; Mathematical analysis ; Mechanics ; Motors ; Other topics in materials science ; Permanent magnets ; Physics</subject><ispartof>IEEE transactions on magnetics, 2007-08, Vol.43 (8), p.3371-3374</ispartof><rights>2008 INIST-CNRS</rights><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2007</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c460t-61cfc69a6ff14fdc087dc73849ae5dc4a71ae52a1907b72f8eec16923af7be403</citedby><cites>FETCH-LOGICAL-c460t-61cfc69a6ff14fdc087dc73849ae5dc4a71ae52a1907b72f8eec16923af7be403</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/4277903$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>230,314,776,780,792,881,27901,27902,54733</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/4277903$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=18950180$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://hal.science/hal-00437000$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Lemarquand, G.</creatorcontrib><title>Ironless Loudspeakers</title><title>IEEE transactions on magnetics</title><addtitle>TMAG</addtitle><description>The paper notes the drawbacks of classical loudspeaker motors: the inductance varies with the coil's position, there is a reluctant effect, and eddy currents appear because of the iron in the motor. It then presents ironless structures of loudspeaker motors to eliminate these drawbacks. These structures are studied with the use of Coulomb's model of permanent magnets, which affords analytical calculations. Thus, a design can be optimized to create a uniform, high-level induction in the space where the coil moves.</description><subject>Acoustics</subject><subject>Coiling</subject><subject>Coils</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>Eddy currents</subject><subject>Electromagnetic actuators</subject><subject>Electromagnetism</subject><subject>Engineering Sciences</subject><subject>Exact sciences and technology</subject><subject>Force</subject><subject>Inductance</subject><subject>Iron</subject><subject>Loudspeakers</subject><subject>Magnetic flux</subject><subject>Magnetism</subject><subject>magnetostatics</subject><subject>Materials science</subject><subject>Mathematical analysis</subject><subject>Mechanics</subject><subject>Motors</subject><subject>Other topics in materials science</subject><subject>Permanent magnets</subject><subject>Physics</subject><issn>0018-9464</issn><issn>1941-0069</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNp9kE1Lw0AQhhdRsFaPguBFBEUPqTPZzX4cS9G2EPFSz8t2s4upaVN3G8F_b0KkggdP8_XMy8xLyAXCCBHUw-J5PB2lAGIklRBUHZABKoYJAFeHZACAMlGMs2NyEuOqLVmGMCDn81BvKhfjVV43Rdw68-5CPCVH3lTRnf3EIXl9elxMZkn-Mp1PxnliGYddwtF6y5Xh3iPzhQUpCiuoZMq4rLDMCGyT1KACsRSpl85Z5CqlxoulY0CH5L7XfTOV3oZybcKXrk2pZ-Ncdz0ARgUAfGLL3vbsNtQfjYs7vS6jdVVlNq5uoqaMi4yLTvTuXxC5QJoBQ9Gi13_QVd2ETfuylpxhBqg6CHrIhjrG4Pz-UgTdea8773Xnve69b1dufnRNtKbywWxsGX_3pGqlZXfqZc-Vzrn9mKVCKKD0G1g4iTU</recordid><startdate>20070801</startdate><enddate>20070801</enddate><creator>Lemarquand, G.</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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It then presents ironless structures of loudspeaker motors to eliminate these drawbacks. These structures are studied with the use of Coulomb's model of permanent magnets, which affords analytical calculations. Thus, a design can be optimized to create a uniform, high-level induction in the space where the coil moves.</abstract><cop>New York, NY</cop><pub>IEEE</pub><doi>10.1109/TMAG.2007.897739</doi><tpages>4</tpages><oa>free_for_read</oa></addata></record> |
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| identifier | ISSN: 0018-9464 |
| ispartof | IEEE transactions on magnetics, 2007-08, Vol.43 (8), p.3371-3374 |
| issn | 0018-9464 1941-0069 |
| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Acoustics Coiling Coils Cross-disciplinary physics: materials science rheology Eddy currents Electromagnetic actuators Electromagnetism Engineering Sciences Exact sciences and technology Force Inductance Iron Loudspeakers Magnetic flux Magnetism magnetostatics Materials science Mathematical analysis Mechanics Motors Other topics in materials science Permanent magnets Physics |
| title | Ironless Loudspeakers |
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