公开(公告)号：US08493062B2

公开(公告)日：2013-07-23

申请号：US13583681

申请日：2010-03-15

申请人： Tomonari Kogure ,  Mayumi Nakanishi

发明人： Tomonari Kogure ,  Mayumi Nakanishi

IPC分类号： G01N27/76

CPC分类号： G01R33/10 ,  G01R31/34 ,  G01R33/1215 ,  G01R33/1223

摘要： According to the present invention, a method for determining coercivity of a coercivity distribution magnet, whereby coercivity of each portion in the coercivity distribution magnet can be determined with good accuracy without, for example, cutting the coercivity distribution magnet into pieces and thus quality assurance can be achieved with good accuracy, is provided.The coercivity determination method of the present invention comprises the following steps: a step of dividing a plane of a coercivity distribution magnet into a plurality of virtual plane segmented regions, placing the coercivity distribution magnet in a demagnetization-field-applying device, providing detectors for the plane segmented regions, and creating a demagnetization loss curve for each plane segmented region; a step of determining the minimum coercivity and the mean coercivity; a step of creating a coercivity distribution graph based on three hypotheses; and a step of determining the coercivity at an arbitrary position on the plane of the coercivity distribution magnet with the use of the coercivity distribution graph based on which the coercivity for each plane segmented region is determined.

摘要翻译： 根据本发明，一种用于确定矫顽磁力分布磁体的矫顽力的方法，由此能够以高精度确定矫顽磁力分布磁铁中各部分的矫顽力，而不需要例如将矫顽力分布磁铁切割成片，从而可以确保质量保证 提供良好的准确性。 本发明的矫顽力测定方法包括以下步骤：将矫顽力分布磁体的平面分割为多个虚拟平面分割区域，将矫顽力分布磁铁置于退磁场施加装置中，提供检测器 平面分割区域，并为每个平面分割区域产生去磁损耗曲线; 确定最小矫顽力和平均矫顽力的步骤; 基于三个假设创建矫顽力分布图的步骤; 以及使用确定每个平面分割区域的矫顽力的矫顽力分布图来确定矫顽力分布磁体的平面上的任意位置的矫顽力的步骤。

公开(公告)号：US08459045B2

公开(公告)日：2013-06-11

申请号：US10587375

申请日：2005-01-24

申请人： Naoki Shirakawa

发明人： Naoki Shirakawa

IPC分类号： F25B19/00 ,  G01R33/02

CPC分类号： G01R33/1215

摘要： In a helium 3 refrigerator-utilizing magnetic property measurement system (MPMS) which enables magnetization measurement to be effected until 0.3 K, a main pipe, to enable magnetization measurement to be infallibly effected even when the upper limit of a magnetic field the MPMS can induce is applied, includes an upper supporting tube positioned in the uppermost part and allowing a bellows to be connected to the lateral part thereof, a condensing tube supported in the lower part of the upper supporting tube, an outer tube fixed in the lower part of the condensing tube and adapted to form an outer wall of an insulated vacuum chamber, and a lower inner tube forming an inner wall of the insulated vacuum chamber. In each of the tubes, the lower inner tube is formed of titanium. As a result, a background signal can be decreased and the measurement can be infallibly effected until the upper limit of the magnetic field of the MPMS.

摘要翻译： 在氦3制冷机利用磁性测量系统（MPMS）中，使得能够进行磁化测量直到0.3K，即使当MPMS可诱导的磁场的上限也能够实现磁化测量时，能够完全实现磁化测量 包括位于最上部的上支撑管，并且允许波纹管与其侧部连接，支撑在上支撑管的下部的冷凝管，固定在上支撑管的下部的外管 冷凝管，适于形成绝缘真空室的外壁，以及形成绝缘真空室内壁的下内管。 在每个管中，下内管由钛形成。 结果，可以降低背景信号，并且直到MPMS的磁场的上限才可以直接进行测量。

公开(公告)号：US08432164B2

公开(公告)日：2013-04-30

申请号：US12897934

申请日：2010-10-05

申请人： Xiaoming Kou ,  Xin Fan ,  Hao Zhu ,  John Q. Xiao

发明人： Xiaoming Kou ,  Xin Fan ,  Hao Zhu ,  John Q. Xiao

IPC分类号： G01R33/00

CPC分类号： H01F1/0081 ,  B82Y25/00 ,  G01R33/1215 ,  G01R33/123 ,  H01F13/003

摘要： Magnetic devices incorporating magnetic composite materials are disclosed. A tunable magnetic device includes magnetic composite material and a magnetic field source. The magnetic composite material includes an insulator and magnetic material embedded in the insulator. The magnetic material has a remanent magnetization. The magnetic field source is operable to apply a magnetic field to the magnetic composite material in order to change the remanent magnetization of the magnetic material. A magnetic device for detecting a magnetic pulse includes magnetic composite material and a sensor. The magnetic composite material includes an insulator and magnetic material embedded in the insulator. The magnetic material has a remanent magnetization. The remanent magnetization changes when the magnetic composite material receives the magnetic pulse. The sensor is positioned to determine the remanent magnetization of the magnetic material. The device detects the magnetic pulse based on a change in the remanent magnetization of the magnetic composite material.

摘要翻译： 公开了包含磁性复合材料的磁性装置。 可调磁性装置包括磁性复合材料和磁场源。 磁性复合材料包括嵌入绝缘体中的绝缘体和磁性材料。 磁性材料具有剩磁。 磁场源可操作以向磁性复合材料施加磁场，以改变磁性材料的剩余磁化强度。 用于检测磁脉冲的磁性装置包括磁性复合材料和传感器。 磁性复合材料包括嵌入绝缘体中的绝缘体和磁性材料。 磁性材料具有剩磁。 当磁性复合材料接收到磁脉冲时，剩余磁化变化。 定位传感器以确定磁性材料的剩余磁化强度。 该装置基于磁性复合材料的剩余磁化强度的变化来检测磁脉冲。

公开(公告)号：US20120056615A1

公开(公告)日：2012-03-08

申请号：US13292752

申请日：2011-11-09

申请人： Udo Ausserlechner ,  Thomas Bever ,  Dirk Hammerschmidt ,  Joachim Weitzel

发明人： Udo Ausserlechner ,  Thomas Bever ,  Dirk Hammerschmidt ,  Joachim Weitzel

IPC分类号： G01R35/00 ,  G01R33/02

CPC分类号： G01R33/1207 ,  G01R33/1215

摘要： An apparatus includes a sensor arrangement with a sensor chip. A magnetic field generator is configured to generate a secondary magnetic field opposing an external primary magnetic field at the sensor chip. The magnetic field generator protects the sensor arrangement against the external primary magnetic field.

摘要翻译： 一种装置包括具有传感器芯片的传感器装置。 磁场发生器被配置为产生与传感器芯片处的外部初级磁场相对的次级磁场。 磁场发生器保护传感器装置免受外部主磁场的影响。

公开(公告)号：US20110204738A1

公开(公告)日：2011-08-25

申请号：US13094633

申请日：2011-04-26

申请人： Lars Helle ,  Morten Lindholm ,  Flemming Buus Bendixen

发明人： Lars Helle ,  Morten Lindholm ,  Flemming Buus Bendixen

IPC分类号： H02K21/12 ,  H02K15/00

CPC分类号： G01R33/1215 ,  F03D9/25 ,  F05B2220/7068 ,  H02K7/1838 ,  H02K11/0094 ,  H02K11/20 ,  H02K11/35 ,  H02K15/03 ,  Y02E10/725 ,  Y10T29/49009

摘要： A method for estimating the magnetization level of one or more permanent magnets established in one or more permanent magnet rotors of a wind turbine generator includes the steps of: establishing one or more magnetization sensors at the stator of the generator, connecting the one or more magnetization sensors to a measuring mechanism, processing measured data in the measuring mechanism, and establishing values of magnetization. Furthermore the invention also relates to a wind turbine.

摘要翻译： 用于估计在风力涡轮发电机的一个或多个永久磁铁转子中建立的一个或多个永磁体的磁化水平的方法包括以下步骤：在发电机的定子处建立一个或多个磁化传感器，连接一个或多个磁化 传感器到测量机构，处理测量机构中的测量数据，并建立磁化值。 此外，本发明还涉及一种风力涡轮机。

公开(公告)号：US20090309580A1

公开(公告)日：2009-12-17

申请号：US12139645

申请日：2008-06-16

申请人： Anthony Dmytriw ,  Kent E. Van Ostrand

发明人： Anthony Dmytriw ,  Kent E. Van Ostrand

IPC分类号： G01R33/02

CPC分类号： G01R33/09 ,  G01D5/145 ,  G01D5/24438 ,  G01R33/1215

摘要： An AMR array magnetic position sensing system for improved sensor flexibility and improved air gap performance is disclosed. A pair of magnets can be enclosed in a magnet carrier that moves along a path and located above an array of AMR position sensors. The magnets are generally magnetized through the length of the magnets, and the magnets are positioned in the carrier such that an angle between the magnets exists in a manner similar to an angle made by AMR runners on a surface of the AMR positions sensors to create magnetic flux lines thereof. The AMR position sensors come into contact with the uniform magnetic flux lines to sense a change in linear and angular position associated with the magnet carrier. The output signal generated by the AMR position sensors have less susceptibility to variations in air gap as the angles of the magnetic flux lines generated by the magnets do note change with respect to air gap variation.

摘要翻译： 公开了一种用于提高传感器灵活性和改进气隙性能的AMR阵列磁位置检测系统。 一对磁体可以封闭在沿着路径移动并位于AMR位置传感器阵列上方的磁体载体中。 磁体通常通过磁体的长度被磁化，并且磁体定位在载体中，使得磁体之间的角度以类似于由AMR位置传感器的表面上的AMR流道制成的角度的方式存在，以产生磁 其通量线。 AMR位置传感器与均匀磁通线接触以感测与磁体载体相关联的线性和角度位置的变化。 由AMR位置传感器产生的输出信号对气隙的变化的敏感性较小，因为由磁体产生的磁通线的角度相对于气隙变化记录变化。

公开(公告)号：US20080043503A1

公开(公告)日：2008-02-21

申请号：US11464692

申请日：2006-08-15

申请人： Ta-yung Yang

发明人： Ta-yung Yang

IPC分类号： H02M3/24

CPC分类号： H02M3/33507 ,  G01R33/1215

摘要： A detection circuit for detecting the demagnetizing time of a magnetic device is provided. An input circuit is coupled to the magnetic device for detecting a magnetizing voltage and a demagnetizing voltage of the magnetic device. A control circuit is coupled to the input circuit for generating a demagnetizing-time signal in response to the magnetizing voltage, the demagnetizing voltage, and a magnetizing time. The magnetizing time is correlated to the enable period of the magnetizing voltage. The demagnetizing time of the magnetic device is represented by the demagnetizing-time signal.

摘要翻译： 提供了一种用于检测磁性装置的消磁时间的检测电路。 输入电路耦合到磁性装置，用于检测磁性装置的磁化电压和去磁电压。 控制电路耦合到输入电路，用于响应于磁化电压，去磁电压和磁化时间产生去磁时信号。 磁化时间与励磁电压的使能期相关。 磁性装置的去磁时间由去磁时信号表示。

公开(公告)号：US06768300B2

公开(公告)日：2004-07-27

申请号：US10298651

申请日：2002-11-19

申请人： Naoki Shirakawa ,  Shinichi Ikeda

发明人： Naoki Shirakawa ,  Shinichi Ikeda

IPC分类号： G01R3302

CPC分类号： G01R33/02 ,  G01R33/1215 ,  Y10S505/846

摘要： An apparatus for measuring electromagnetic characteristics includes a sample rod with a sample fixed to a lower part thereof, a helium 3 refrigerator, in which the sample rod is inserted, having a main pipe that forms around the sample rod a space that is cooled by helium 3, a device for supplying helium 3 to the helium 3 refrigerator, an inner tube portion, into which the main pipe is inserted, that supports at an upper part thereof the refrigerator, an outer tube that cools an outer periphery of the inner tube with helium, a liquid helium container that supplies liquid helium to the outer tube, and a device for measuring the electromagnetic characteristics of the sample.

摘要翻译： 一种用于测量电磁特性的装置包括：样品杆，其样品固定在其下部，氦3制冷器，其中插入样品棒，具有在试样棒周围形成空间的主管，该空间被氦冷却 3，用于向氦3制冷机供给氦3的装置，将主管插入其内部的内管部，在其上部支撑着冰箱，将内管的外周冷却的外管， 氦气，向外管供应液氦的液氦容器，以及用于测量样品的电磁特性的装置。

公开(公告)号：US6037769A

公开(公告)日：2000-03-14

申请号：US248113

申请日：1999-02-11

申请人： Stephen R Hoon ,  Andrew N Farley

发明人： Stephen R Hoon ,  Andrew N Farley

IPC分类号： G01R33/12 ,  G01N27/72

CPC分类号： G01R33/1215

摘要： A method of and apparatus for torque magnetometry in which a specimen, the magnetic moment of which it is desired to determine, is disposed on a support. A temporally varying, for example sinusoidal, magnetic field is generated in the region of the specimen so that interaction between the magnetic moment of the specimen and the magnetic field causes a torque to be exerted on the specimen. Consequently, the specimen and/or the support are deflected and typically exhibit a vibratory motion. The motion of the specimen and/or support due to the torque is measured. When the magnitude and direction of the magnetic field are known, the magnetic moment of the specimen can be determined from the results of the motion measurement. The frequency of the magnetic field can be adjusted so that the specimen and/or the support resonate. The support is typically a single silicon crystal having two orthogonal modes of vibration which have different resonant frequencies. This can facilitate the independent determination of the three orthogonal components of the magnetic moment of the specimen.

摘要翻译： 用于转矩磁力计的方法和装置，其中将需要确定的磁矩设置在支架上。 在试样的区域产生时变的例如正弦磁场，使得试样的磁矩与磁场之间的相互作用导致试样施加转矩。 因此，试样和/或支撑件被偏转并且通常表现出振动。 测量由于扭矩引起的试样和/或支撑件的运动。 当已知磁场的大小和方向时，可以根据运动测量的结果确定样本的磁矩。 可以调节磁场的频率，使得样品和/或支持体共振。 支撑体通常是具有两个具有不同谐振频率的正交振动模式的单个硅晶体。 这可以有助于独立确定样品磁矩的三个正交分量。

公开(公告)号：US5977767A

公开(公告)日：1999-11-02

申请号：US39723

申请日：1998-03-16

申请人： Murali Chaparala

发明人： Murali Chaparala

IPC分类号： G01H11/06 ,  G01R33/038 ,  G01R33/12 ,  G01V1/18 ,  G01R33/02 ,  G01R27/28

CPC分类号： G01H11/06 ,  G01R33/038 ,  G01R33/1215 ,  G01V1/18

摘要： A high sensitivity torque and force cantilever magnetometer has a cantilever with isolated capacitance detection and nulling circuits which provides increased sensitivity and accuracy to measurements of a magnetic moment of a sample placed on the cantilever and exposed to a magnetic field. Magnetic detection is by electrical capacitance between a metallized plate and the cantilever. The cantilever can be used to measure both isotropic and anisotropic magnetism. The cantilever is constructed of multiple layers of conducting and insulating materials to eliminate leakage current. The magnetometer measures the magnitude of a current through a null detection circuit having at least one nulling loop deposited on the cantilever required to maintain a constant capacitance between the cantilever and a metallized plate to determine the magnetization of the sample. The null detection circuit eliminates capacitance drift and improves the accuracy of the magnetometer. Nulling loop configurations for separately and accurately balancing force and torque terms generated by interaction between the nulling loops and the magnetic field on the cantilever further enhance the sensitivity of the cantilever.

摘要翻译： 高灵敏度扭矩和力悬臂磁力计具有悬臂，具有隔离电容检测和零位电路，可提供放置在悬臂上并暴露于磁场的样品的磁矩测量的灵敏度和精度。 磁检测是通过金属化板和悬臂之间的电容。 悬臂可用于测量各向同性和各向异性磁性。 悬臂由多层导电和绝缘材料构成，以消除漏电流。 磁力计测量电流的大小，该零电流检测电路具有沉积在悬臂上的至少一个归零回路，以维持悬臂与金属化板之间的恒定电容，以确定样品的磁化。 零检测电路消除电容漂移并提高磁力计的精度。 用于单独和精确地平衡力和力矩之间的空转回路配置，用于通过悬空回路与悬臂之间的磁场相互作用产生的力和力矩进一步提高了悬臂的灵敏度。