公开(公告)号：US20190178959A1

公开(公告)日：2019-06-13

申请号：US16307850

申请日：2017-05-31

申请人： PRESIDENT AND FELLOWS OF HARVARD COLLEGE

发明人： John Francis BARRY ,  Jennifer May SCHLOSS ,  Matthew James TURNER ,  Mikael Paul BACKLUND ,  Ronald WALSWORTH

IPC分类号： G01R33/26 ,  G01R33/00 ,  G01R33/032 ,  G01R33/12

CPC分类号： G01R33/26 ,  G01R33/0041 ,  G01R33/032 ,  G01R33/12 ,  G01R33/1215

摘要： A system and method for performing vector magnetometry are described. A method can include illuminating diamond with a modulated optical signal and a modulated microwave (MW) signal. A first, bias magnetic field is also applied to the diamond. Light emitted from the diamond in response to the optical signal, the MW signal, and the first magnetic field is detected via a single detector at a fixed position relative to the diamond. A modulation of the detected light encodes information corresponding to a plurality of nitrogen vacancy (NV) axes of the diamond.

公开(公告)号：US20180188335A1

公开(公告)日：2018-07-05

申请号：US15741901

申请日：2015-07-24

申请人： Hitachi, Ltd.

发明人： Kazutami TAGO ,  Kenji MIYATA ,  Tomohito NAKANO

IPC分类号： G01R33/02 ,  G01R33/12 ,  G01R33/00 ,  G06F17/50 ,  G01N27/72

CPC分类号： G01R33/02 ,  G01N27/72 ,  G01R33/0064 ,  G01R33/1215 ,  G01R33/18 ,  G06F17/50 ,  G06F17/5009 ,  G06F17/5018 ,  G06F2217/16

摘要： In a magnetic field analysis calculation, there is a need to consider a characteristic that a magnetic field and a flux density face in different directions from each other by a stress in a magnetic material. Therefore, a measured value of a magnetic characteristic on a condition that the magnetic field, the magnetic flux density, and a mechanical stress are parallel is used. In a method and a device for magnetic field analysis calculation, a stress magnetic anisotropy is calculated using a relation between a magnetostriction of the magnetic material, the magnetic flux density, and the stress and a relation between a magnetization curve of the magnetic material, the magnetic flux density, and the stress which are measured on a condition that the magnetic field and the stress in the magnetic material are parallel.

公开(公告)号：US20160313415A1

公开(公告)日：2016-10-27

申请号：US15102476

申请日：2014-11-11

申请人： ZF FRIEDRICHSHAFEN AG

发明人： Eduard Ruff

IPC分类号： G01R33/12 ,  G01R33/07

CPC分类号： G01R33/1215 ,  G01R33/072

摘要： The present disclosure provides a measuring head for detecting a magnetic field provided by a magnet block having three pole surfaces. The measuring head may have three magnetic conductors for conducting the magnetic field. Each magnetic conductor may include an end face, where in at least one arrangement of the three magnetic conductors, the three end faces are arranged in one plane corresponding to the arrangement of the three pole surfaces. The measuring head may also include two sensors configured to detect the magnetic field.

摘要翻译： 本公开提供了一种用于检测由具有三个极面的磁体块提供的磁场的测量头。 测量头可以具有用于传导磁场的三个磁性导体。 每个磁性导体可以包括端面，其中在三个磁性导体的至少一个布置中，三个端面布置在与三个磁极表面的布置相对应的一个平面中。 测量头还可以包括被配置为检测磁场的两个传感器。

公开(公告)号：US09464667B2

公开(公告)日：2016-10-11

申请号：US14112457

申请日：2012-05-04

申请人： Barrie Dudley Brewster ,  Andrew Waye

发明人： Barrie Dudley Brewster ,  Andrew Waye

IPC分类号： G01B7/30 ,  F16C32/04 ,  G01R33/12 ,  G01P3/487 ,  H01F7/02 ,  F16C43/00

CPC分类号： F16C32/04 ,  F16C32/0425 ,  F16C43/00 ,  F16C2360/45 ,  G01P3/487 ,  G01R33/1215 ,  H01F7/0236 ,  Y10T29/49004

摘要： Stray magnetic fields created by non-symmetrical magnetisation of the permanent magnets in a rotating magnet array of a magnetic bearing assembly, when used in turbo molecular pumps, can cause significant problems to devices such as scanning electron microscopes. In order to minimise the stray fields, at least the dipole and quadrupole moments of each magnet in the array is first measured. The magnets in the array are then arranged relative to one another such that both the dipole and quadrupole moments are minimised, thus minimising the stray magnetic field when the magnet array rotates in the turbomolecular pump.

摘要翻译： 在涡轮分子泵中使用的磁轴承组件的旋转磁体阵列中的永磁体的非对称磁化产生的杂散磁场可能对诸如扫描电子显微镜的装置造成重大问题。 为了最小化杂散场，首先测量阵列中每个磁体的至少偶极和四极矩。 然后阵列中的磁体相对于彼此布置，使得偶极子和四极矩都被最小化，从而当磁体阵列在涡轮分子泵中旋转时最小化杂散磁场。

公开(公告)号：US20150091556A1

公开(公告)日：2015-04-02

申请号：US14147057

申请日：2014-01-03

申请人： Electronics & Telecommunications Research Institute

发明人： Hyo Bong HONG ,  Jae Ho Lim ,  Sung Woong Shin

IPC分类号： G01N27/72

CPC分类号： G01N27/72 ,  G01R33/1215

摘要： The present invention provides an apparatus and a method for analyzing materials by using pattern analysis of harmonic peaks. The apparatus for analyzing materials according to the present invention comprises a generating unit generating two or more electromagnetic fields, a detecting unit detecting a magnetization signal generated from a measurement target material as an electromagnetic field is applied to the measurement target material, and an analyzing unit analyzing type of the measurement target material based on a harmonic pattern obtained from the magnetization signal.

摘要翻译： 本发明提供了通过使用谐波峰值的图案分析来分析材料的装置和方法。 根据本发明的用于分析材料的装置包括产生两个或更多个电磁场的发生单元，当测量目标材料施加电磁场时，检测从测量目标材料产生的磁化信号的检测单元和分析单元 基于从磁化信号获得的谐波图案来分析测量对象材料的类型。

公开(公告)号：US08798948B2

公开(公告)日：2014-08-05

申请号：US13067245

申请日：2011-05-18

申请人： Koichi Shimizu

发明人： Koichi Shimizu

IPC分类号： G01R15/00 ,  G01R33/12 ,  G01R33/00

CPC分类号： G01R33/00 ,  G01R33/1215

摘要： A non-transitory computer-readable recording medium stores a magnetic program causing a computer to perform an exchange coupling energy calculating process including interpolating a rotation angle between two magnetization vectors disposed at the respective centers of two adjacent elements used in a finite volume method with reference to a rotation axis perpendicular to the two magnetization vectors, and calculating a magnetic exchange coupling field by integrating a magnetic field acting as a force exerted on the two magnetization vectors with the interpolated rotation angle.

摘要翻译： 非暂时性计算机可读记录介质存储磁程序，使得计算机执行交换耦合能量计算处理，该处理包括将设置在有限体积法中使用的两个相邻元素的各个中心的两个磁化向量之间的旋转角度内插到参考 到与两个磁化矢量垂直的旋转轴，并且通过将作为施加在两个磁化矢量上的力的磁场积分为内插旋转角度来计算磁交换耦合场。

公开(公告)号：US20140145715A1

公开(公告)日：2014-05-29

申请号：US13820515

申请日：2011-09-02

申请人： Geert Rikken ,  Remy Battesti ,  Andrei Ben-Amar Baranga ,  Mathilde Fouche ,  Carlo Ritto

发明人： Geert Rikken ,  Remy Battesti ,  Andrei Ben-Amar Baranga ,  Mathilde Fouche ,  Carlo Ritto

IPC分类号： G01R33/12

CPC分类号： G01R33/1215 ,  G01J1/4257 ,  G01J4/00 ,  G01R33/032 ,  H01S3/0014

摘要： A device and a method making it possible to measure a magnetization generated within an active medium, or to characterize a linearly polarized electromagnetic wave when said active medium exhibits an Inverse Cotton-Mouton effect, comprises in combination at least the following elements: an active medium in which a linearly polarized electromagnetic wave propagates, a means for producing a transverse magnetic field with respect to the direction of propagation of said electromagnetic wave, a device for measuring the electrical signal suitable for manifesting the magnetization generated within said active medium by said electromagnetic wave.

摘要翻译： 一种使得有可能测量在活性介质中产生的磁化或者当所述活性介质呈现反向棉花 - 莫顿效应时线性极化电磁波的特征的装置和方法至少包括以下元素：活性介质 其中线性极化电磁波传播，相对于所述电磁波的传播方向产生横向磁场的装置，用于测量适合于通过所述电磁波显示在所述有源介质内产生的磁化的电信号的装置 。

公开(公告)号：US08575923B1

公开(公告)日：2013-11-05

申请号：US13374712

申请日：2012-01-09

申请人： Carroll Roy Thompson

发明人： Carroll Roy Thompson

IPC分类号： G01R33/12 ,  G01N27/72 ,  G01N27/82 ,  G01N27/84

CPC分类号： G01N27/72 ,  G01N27/82 ,  G01N27/84 ,  G01R33/0213 ,  G01R33/1215

摘要： A magnetic inspection station for tubular members and methods for operating the same have a longitudinal flaw detection assembly adapted to pass a circumferential magnetic field through a tubular member and a transverse flaw detection assembly adapted to pass a longitudinal magnetic field through the tubular member. The magnetic fields cause congregation of a ferromagnetic particles sprayed on the tubular member in a magnetic particle inspection fluid. The congregation of ferromagnetic particles indicates a flaw in the tubular member. The magnetic inspection station includes a clamping apparatus positioned closely adjacent to the magnetic inspection station and adapted to support the tubular member within the magnetic inspection station and exert a compensating force on the tubular member to resist the magnetic forces generated by the longitudinal flaw detection assembly and the transverse flaw detection assembly.

摘要翻译： 用于管状构件的磁性检查站及其操作方法具有纵向探伤组件，其适于使圆周磁场通过管状构件和适于使纵向磁场通过管状构件的横向探伤组件。 磁场引起在磁性颗粒检查流体中喷射在管状构件上的铁磁颗粒的聚集。 铁磁颗粒的聚集表示管状构件中的缺陷。 磁性检查站包括夹紧装置，其紧邻磁性检查站定位并且适于将管状构件支撑在磁性检查站内，并且对管状构件施加补偿力以抵抗由纵向缺陷检测组件产生的磁力;以及 横向探伤组件。

公开(公告)号：US08169213B2

公开(公告)日：2012-05-01

申请号：US12447354

申请日：2007-10-31

申请人： Hidenari Shimamura ,  Mitsutoshi Natsumeda

发明人： Hidenari Shimamura ,  Mitsutoshi Natsumeda

IPC分类号： G01N27/74

CPC分类号： G01R33/1215 ,  G01R33/1223 ,  G01R33/123 ,  H01F13/003

摘要： It is possible to perform accurate magnetization analysis by considering the magnetic state of an incomplete magnetic region. A magnetization analysis device performs magnetization analysis by using a magnetizer parameter associated with a magnetizer and a magnet parameter associated with a magnet material so as to calculate a magnetization magnetic field applied to respective portions of the magnet material (S17), calculates a recoil ratio permeability and a coercivity as region of a permanent magnet as an analysis object for the respective portions according to the calculation result of the magnetized magnetic field and the demagnetization curve associated with the incomplete magnetization region actually measured in advance (S18), and performs a magnetic field analysis by using the calculation result of the region parameter so as to calculate a state parameter indicating the magnetized state of the permanent magnet as an analysis object (S19).

摘要翻译： 通过考虑不完全磁性区域的磁状态可以进行精确的磁化分析。 磁化分析装置通过使用与磁化器相关联的磁化器参数和与磁体材料相关联的磁体参数来执行磁化分析，以计算施加到磁体材料各部分的磁化磁场（S17），计算反冲比磁导率 以及根据与实际测量的不完全磁化区域相关的磁化磁场和去磁曲线的计算结果作为各部分的分析对象的永磁体的矫顽力（S18），并且执行磁场 通过使用区域参数的计算结果进行分析，以计算表示永久磁铁的磁化状态的状态参数作为分析对象（S19）。

公开(公告)号：US20120098532A1

公开(公告)日：2012-04-26

申请号：US13131454

申请日：2009-11-18

申请人： Michael Kaack ,  Stefan Nitsche ,  André Germes

发明人： Michael Kaack ,  Stefan Nitsche ,  André Germes

IPC分类号： G01R33/07 ,  G01R33/02

CPC分类号： G01R33/1215 ,  G01N27/87

摘要： The invention relates to a method for the automated measurement of the residual magnetic field strength of magnetized ferromagnetic workpieces, especially steel tubes, the residual magnetic field exiting the face of the tube end being measured by means of a measuring probe. Instead of directly measuring the residual field strength on the face, the curve of at least one magnetic field component is measured on the outer surface of the tube at least in the region of the tube ends and beyond the tube ends and the residual field strength on the face is inferred on the basis of the previously determined correlations between the residual field strength measured on the face and on the tube surface.

摘要翻译： 本发明涉及一种用于自动测量磁化铁磁性工件，特别是钢管的残余磁场强度的方法，通过测量探头测量离开管端面的剩余磁场。 代替直接测量面上的残余场强，至少在管的外表面上测量至少一个磁场分量的曲线，该曲线至少在管末端的区域中并超过管端，残余场强度 基于在面上和管表面上测量的残余磁场强度之间先前确定的相关性来推断该面。