Linear Drive Systems and their Related Technologies. Magnetless Voice Coil Motor and the Driving Characteristics.
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- Kaido Chikera
- Nippon Steel Co.
Bibliographic Information
- Other Title
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- リニアドライブと関連技術 マグネットレスボイスコイルモータとその駆動特性
- マグネットレスボイス コイル モータ ト ソノ クドウ トクセイ
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Abstract
A magnetless voice coil motor (MLVCM) is generally composed of a closed magnetic circuit stator core (laminated electical steels), two exciting coils on the core and a metal ring mover, without pernament magnets and leading wires connected with the mover. A driving force F is both an electromagnetic force between a mover current J2 and a gap flux density BG, which are induced by an exciting current J1, and a reluctance force due to J2. The driving force F is proportional to J12/g, where g is a gap length, and almost independent of mover position under a constant J1 and above a lower cutoff angular velocity ωJ1, of an induced current. ωJ1 becomes lower with the lower electric resistance of a mover and the lower reluctance of a magnetic circuit (stator core), and consequently a MLVCM with a closed magnetic circuit generates a higher driving force than that with an open magnetic circuit. The higher permeability and the lower iron loss of a magnetic circuit core increase a mover current J2 and a gap flux density BG, and then a driving force becomes greater. A voltage applied to the exciting coil increases proportionally to the distance between an exciting coil and a mover under a constant J1.
Journal
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- IEEJ Transactions on Industry Applications
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IEEJ Transactions on Industry Applications 115 (3), 198-203, 1995
The Institute of Electrical Engineers of Japan
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Details 詳細情報について
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- CRID
- 1390282679632961536
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- NII Article ID
- 10002817005
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- NII Book ID
- AN10012320
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- ISSN
- 13488163
- 09136339
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- NDL BIB ID
- 3598782
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed