ES2084044T3 - Diseño optimo de imanes permanentes bidimensionales. - Google Patents
Diseño optimo de imanes permanentes bidimensionales.Info
- Publication number
- ES2084044T3 ES2084044T3 ES90916617T ES90916617T ES2084044T3 ES 2084044 T3 ES2084044 T3 ES 2084044T3 ES 90916617 T ES90916617 T ES 90916617T ES 90916617 T ES90916617 T ES 90916617T ES 2084044 T3 ES2084044 T3 ES 2084044T3
- Authority
- ES
- Spain
- Prior art keywords
- cavity
- sections
- flux
- base line
- remanences
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0273—Magnetic circuits with PM for magnetic field generation
- H01F7/0278—Magnetic circuits with PM for magnetic field generation for generating uniform fields, focusing, deflecting electrically charged particles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
- G01R33/383—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using permanent magnets
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Hard Magnetic Materials (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Coils Or Transformers For Communication (AREA)
- Linear Motors (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
UNA ESTRUCTURA DE IMAN PERMANENTE (10) TENIENDO AL MENOS UN CIRCUITO DE FLUJO CIRCULANTE, COMPRENDE UNA PRIMERA Y UNA SEGUNDA PLURALIDAD DE SECCIONES DE MATERIAL MAGNETICO UNIFORMEMENTE MAGNETIZADAS (14, 18 Y 12, 16) FORMANDO UNA CAVIDAD DE FORMA POLIGONAL Y TENIENDO UN PUNTO F SITUADO A LO LARGO DE UNA LINEA DE BASE EQUIPOTENCIAL CERO UNIENDO DOS VERTICES CON LA CAVIDAD SIENDO TAL PUNTO LA REFERENCIA PARA UNA FIGURA DE MERITO M CORRESPONDIENTE A UNA FUERZA DE CAMPO MAXIMA Y UNA RAZON MAXIMA DEL VALOR DEL AREA DE MATERIAL MAGNETIZADO AL AREA DE LA CAVIDAD. UNA TERCERA PLURALIDAD DE SECCIONES MAGNETICAS NO IMANTADAS (30, 32) INCLUYEN LA LINEA BASE Y BORDEA LAS PRIMERAS SECCIONES PARA PROPORCIONAR UN CAMINO INDUCTIVO PARA CANALIZAR EL FLUJO Y CERRAR EL CIRCUITO.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/424,162 US5119057A (en) | 1989-10-19 | 1989-10-19 | Optimum design of two-dimensional permanent magnets |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2084044T3 true ES2084044T3 (es) | 1996-05-01 |
Family
ID=23681704
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES90916617T Expired - Lifetime ES2084044T3 (es) | 1989-10-19 | 1990-10-18 | Diseño optimo de imanes permanentes bidimensionales. |
Country Status (8)
Country | Link |
---|---|
US (1) | US5119057A (es) |
EP (1) | EP0496817B1 (es) |
JP (1) | JP2804996B2 (es) |
AT (1) | ATE131951T1 (es) |
CA (1) | CA2067812A1 (es) |
DE (1) | DE69024365T2 (es) |
ES (1) | ES2084044T3 (es) |
WO (1) | WO1991006963A1 (es) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1247385B (it) * | 1990-07-16 | 1994-12-12 | Esaote Biomedica | Magneti permanenti generatori di campi magnetici omogenei, in particolare per magnetic resonance imaging (rappresentazione per risonanza magnetica), e relativo metodo di fabbricazione |
US5162771A (en) * | 1990-10-01 | 1992-11-10 | New York University | Highly efficient yoked permanent magnet |
US5107239A (en) * | 1991-05-30 | 1992-04-21 | New York University | Hybrid permanent magnets |
US5285393A (en) * | 1991-11-19 | 1994-02-08 | New York University | Method for determination of optimum fields of permanent magnet structures with linear magnetic characteristics |
US5621324A (en) * | 1992-03-18 | 1997-04-15 | Sumitomo Special Metals Company Limited | Magnetic field generator for MRI |
US5428333A (en) * | 1993-01-22 | 1995-06-27 | New York University | Method and apparatus for compensation of field distortion in a magnetic structure |
US5798680A (en) * | 1994-04-15 | 1998-08-25 | New York University | Strapped open magnetic structure |
US7199689B1 (en) * | 2006-01-09 | 2007-04-03 | Brk Wireless Company, Inc | High field NMR permanent magnetic structure |
RO122019B1 (ro) * | 2006-06-30 | 2008-11-28 | Ioan Grosu | Jucărie cu dinamică controlată |
US20090195248A1 (en) * | 2008-02-01 | 2009-08-06 | Wang Nmr Inc. | Table-top magnetic resonance imaging apparatus with permanent magnet |
IT1395836B1 (it) | 2009-10-09 | 2012-10-26 | Esaote Spa | Metodo per la realizzazione di un magnete permanente in particolare per scanner mri ed un magnete permanente, in particolare per scanner mri realizzato con detto metodo |
JP6473142B2 (ja) * | 2013-06-03 | 2019-02-20 | ナナリシス コーポレーション | 磁石アセンブリ |
CN109856572B (zh) * | 2019-04-24 | 2023-09-22 | 河北工业大学 | 一种一维及二维高低频磁特性测量系统 |
DE102022202399A1 (de) | 2022-03-10 | 2023-09-14 | Bruker Biospin Gmbh | NMR Permanentmagnet in Halbach-Anordnung basierend auf Segmenten mit regulärer Polyedergeometrie sowie Herstellungsverfahren |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL287237A (es) * | 1961-12-27 | |||
US3768054A (en) * | 1972-04-03 | 1973-10-23 | Gen Electric | Low flux leakage magnet construction |
US4538130A (en) * | 1984-04-23 | 1985-08-27 | Field Effects, Inc. | Tunable segmented ring magnet and method of manufacture |
NL8402250A (nl) * | 1984-07-17 | 1986-02-17 | Philips Nv | Kernspin resonantie apparaat met een rechthoekig permanent magnetische magneet. |
US4647887A (en) * | 1984-12-24 | 1987-03-03 | The United States Of America As Represented By The Secretary Of The Army | Lightweight cladding for magnetic circuits |
IT8921079A0 (it) * | 1989-07-03 | 1989-07-03 | Comec Srl | Sistema per la fabbricazione di magneti permanenti senza giochi, generatori di campo magnetico uniforme e relativi magneti permanenti elementari o compositi. |
-
1989
- 1989-10-19 US US07/424,162 patent/US5119057A/en not_active Expired - Lifetime
-
1990
- 1990-10-18 CA CA002067812A patent/CA2067812A1/en not_active Abandoned
- 1990-10-18 EP EP90916617A patent/EP0496817B1/en not_active Expired - Lifetime
- 1990-10-18 JP JP2515610A patent/JP2804996B2/ja not_active Expired - Fee Related
- 1990-10-18 AT AT90916617T patent/ATE131951T1/de not_active IP Right Cessation
- 1990-10-18 ES ES90916617T patent/ES2084044T3/es not_active Expired - Lifetime
- 1990-10-18 DE DE69024365T patent/DE69024365T2/de not_active Expired - Lifetime
- 1990-10-18 WO PCT/US1990/006010 patent/WO1991006963A1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
JP2804996B2 (ja) | 1998-09-30 |
EP0496817A4 (en) | 1993-03-31 |
EP0496817B1 (en) | 1995-12-20 |
DE69024365T2 (de) | 1996-08-01 |
ATE131951T1 (de) | 1996-01-15 |
US5119057A (en) | 1992-06-02 |
WO1991006963A1 (en) | 1991-05-16 |
DE69024365D1 (de) | 1996-02-01 |
CA2067812A1 (en) | 1991-04-20 |
EP0496817A1 (en) | 1992-08-05 |
JPH05501940A (ja) | 1993-04-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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