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1.发明授权Torque sensor for detecting a shaft torque and an electric machine in which the torque sensor is mounted 失效用于检测轴扭矩的扭矩传感器和安装扭矩传感器的电机
公开(公告)号：US4750371A
公开(公告)日：1988-06-14
申请号：US913317
申请日：1986-09-30
IPC分类号： G01L3/10
摘要： A torque sensor of noncontact type, by which can be stably measured the torque of a shaft with a sufficient S/N ratio under the influence of external magnetic noise, such as an induction magnetic flux which is produced in an induction motor, and which can be readily disposed in a comparatively small space. When provided on an induction motor, the torque sensor is mounted on the induction motor in noncontacting relationship. The torque sensor detects the torque of the shaft and includes a pair of magnetic material members provided on respective circumferential portions of the peripheral surface of a shaft. A pair of magnetic detectors are disposed at opposite locations at which external magnetic fields having opposite phase exist. The detectors detect the variation of the magnetic characteristics of the magnetic materials, and a signal processing circuit produces a mean value of output signals obtained from the magnetic detectors.
摘要翻译： 一种非接触式的转矩传感器，其可以在外部磁噪声（例如感应电动机中产生的感应磁通）的影响下稳定地测量具有足够的S / N比的轴的转矩，并且可以 容易地设置在相对较小的空间中。 当设置在感应电动机上时，转矩传感器以非接触关系安装在感应电动机上。 转矩传感器检测轴的转矩，并且包括设置在轴的周面的相应周向部分上的一对磁性材料构件。 一对磁性检测器设置在具有相反相位的外部磁场的相对位置处。 检测器检测磁性材料的磁特性的变化，并且信号处理电路产生从磁性检测器获得的输出信号的平均值。
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公开(公告)号：US06676772B2
公开(公告)日：2004-01-13
申请号：US10098568
申请日：2002-03-18
申请人： Akiko Saito , Tadahiko Kobayashi , Takao Sawa , Masashi Sahashi
发明人： Akiko Saito , Tadahiko Kobayashi , Takao Sawa , Masashi Sahashi
IPC分类号： H01F1055
摘要： The magnetic material for magnetic refrigeration of the present invention is characterized by exhibiting, in a certain temperature region, preferably, only in part of a temperature region from 200 K to 350 K, an inflection point at which a second order differential coefficient of a magnetization curve changes from positive to negative with respect to a magnetic field, within the range of this magnetic field formed using a permanent magnet unit. This magnetic material of the present invention can generate a low temperature by using a relatively low magnetic field, by transferring the entropy between the electron spin system and the lattice system near the temperature at which an inflection point appears on the magnetization curve. Examples of the magnetic material meeting this condition are La(Fe,Si)13, (Hf,Ta)Fe2, (Ti,Sc)Fe2, and (Nb,Mo)Fe2, each containing 50 to 60 atomic % of transition metals such as Fe.
摘要翻译： 本发明的磁性制冷用磁性材料的特征在于，在一定的温度范围内优选仅显示200K〜350K的温度区域的一部分，其中磁化强度的二阶微分系数 在使用永久磁铁单元形成的该磁场的范围内，曲线相对于磁场从正向变化为负。 本发明的这种磁性材料可以通过在电磁自旋系统和晶格系统之间传递熵在靠近磁化曲线上出现拐点的温度下，通过使用较低的磁场而产生低温。 满足该条件的磁性材料的实例是La（Fe，Si）13，（Hf，Ta）Fe 2，（Ti，Sc）Fe 2和（Nb，Mo）Fe 2，每个含有50至60原子％的过渡金属 如Fe。
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公开(公告)号：US5565830A
公开(公告)日：1996-10-15
申请号：US158813
申请日：1993-11-29
摘要： A rare earth-cobalt supermagnetostrictive alloy having a composition represented by the general formula, in atomic fraction: R (Co.sub.1-x Fe.sub.x).sub.x, wherein 0.001.ltoreq.x.ltoreq.0.8, 0.2.ltoreq.z.ltoreq.15, and R is at least one element selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu and is consisting essentially of a cubic system whose easy axis of magnetization is generally or oriented; or R (Co.sub.1-x Fe.sub.x).sub.x, wherein 0.001.ltoreq.x.ltoreq.0.8, 0.2.ltoreq.z.ltoreq.15, and R is at least one element selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Sm, Gd, Dy, Er, Yb, and Lu. Such an alloy exhibits satisfactory magnetostriction in a wide range of temperatures from room temperature to liquid nitrogen temperature.
摘要翻译： 具有由通式表示的组成的稀土钴超磁致伸缩合金，原子分数为R（Co1-xFex）x，其中0.001≤x≤0.8,0.2≤z= 15，和 R是选自Sc，Y，La，Ce，Pr，Nd，Pm，Sm，Eu，Gd，Tb，Dy，Ho，Er，Tm，Yb和Lu中的至少一种元素， 的易磁化轴通常<100>或<110>取向的立方体系; 或R（Co1-xFex）x，其中0.001≤x≤0.8,0.2≤Z≤15，并且R是选自Sc，Y，La，Ce中的至少一种元素 ，Pr，Nd，Sm，Gd，Dy，Er，Yb和Lu。 这种合金在从室温到液氮温度的宽范围的温度范围内表现出令人满意的磁致伸缩。
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公开(公告)号：US5260615A
公开(公告)日：1993-11-09
申请号：US723305
申请日：1991-06-28
CPC分类号： H03H9/426
摘要： A magnetoelastic wave device comprising a substrate, a magnetostrictive film formed over the substrate, a wave generating section, a wave receiving section, and a modulation magnetic field generating section. The magnetostrictive film has an axis of easy magnetization which is substantially axis and extends parallel to the major surfaces of the magnetostrictive film.
摘要翻译： 一种磁弹性波装置，包括基板，形成在基板上的磁致伸缩膜，波发生部，波接收部和调制磁场产生部。 磁致伸缩薄膜具有易磁化的轴线，该轴线基本上是轴线，并平行于磁致伸缩薄膜的主表面延伸。
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公开(公告)号：US4762008A
公开(公告)日：1988-08-09
申请号：US31279
申请日：1987-03-30
IPC分类号： G01L3/10
摘要： A torque detecting apparatus utilizing a magnetoelastic effect comprising one or more pairs of thin magnetic metal strips affixed to a torque-transmitting shaft subjected to torque detection and having magnetic anisotropy induced in a predetermined direction, and one or more pairs of detecting cores paired with the above one or more pairs of thin magnetic metal strips, fixed in contact with the thin magnetic metal strips, each of the cores of the one or more pairs of detecting cores having a detecting coil wound therearound, In one embodiment, the torque detecting apparatus utilizes a magnetoelastic effect of thin magnetic metal strip wherein the absolute value of saturated magnetostriction constant .lambda.s of the thin magnetic metal strip is less than 1.times.10.sup.-6.
摘要翻译： 一种利用磁弹性效应的扭矩检测装置，其特征在于，包括一对或多对固定在转矩检测用的转矩传递轴上并具有沿预定方向感应的磁各向异性的薄磁性金属条，以及一对或多对检测芯， 在与薄磁性金属带接触固定的一对或多对薄磁性金属带之上，一对或多对检测芯中的每个芯具有卷绕在其上的检测线圈。在一个实施例中，扭矩检测装置利用 薄磁性金属带的磁弹性效应，其中薄磁性金属带的饱和磁致伸缩常数λs的绝对值小于1×10 -6。
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公开(公告)号：US07076958B2
公开(公告)日：2006-07-18
申请号：US10718518
申请日：2003-11-24
申请人： Akiko Saito , Tadahiko Kobayashi , Takao Sawa , Masashi Sahashi
发明人： Akiko Saito , Tadahiko Kobayashi , Takao Sawa , Masashi Sahashi
摘要： The magnetic material for magnetic refrigeration of the present invention is characterized by exhibiting, in a certain temperature region, preferably, only in part of a temperature region from 200 K to 350 K, an inflection point at which a second order differential coefficient of a magnetization curve changes from positive to negative with respect to a magnetic field, within the range of this magnetic field formed using a permanent magnet unit. This magnetic material of the present invention can generate a low temperature by using a relatively low magnetic field, by transferring the entropy between the electron spin system and the lattice system near the temperature at which an inflection point appears on the magnetization curve. Examples of the magnetic material meeting this condition are La(Fe,Si)13, (Hf,Ta)Fe2, (Ti,Sc)Fe2, and (Nb,Mo)Fe2, each containing 50 to 60 atomic % of transition metals such as Fe.
摘要翻译： 本发明的磁性制冷用磁性材料的特征在于，在一定的温度范围内优选仅显示200K〜350K的温度区域的一部分，其中磁化强度的二阶微分系数 在使用永久磁铁单元形成的该磁场的范围内，曲线相对于磁场从正向变化为负。 本发明的这种磁性材料可以通过在电磁自旋系统和晶格系统之间传递熵在靠近磁化曲线上出现拐点的温度下，通过使用较低的磁场而产生低温。 满足该条件的磁性材料的实例是La（Fe，Si）13，（Hf，Ta）Fe 2 N，（Ti，Sc）Fe 2 /（Nb，Mo）Fe 2 N 2，各自含有50〜60原子％的过渡金属如Fe。
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公开(公告)号：US5184037A
公开(公告)日：1993-02-02
申请号：US659172
申请日：1991-02-22
IPC分类号： H01L41/12
CPC分类号： H01L41/12
摘要： A magnetstriction type actuator is capable of reducing an input power loss and increasing an output, which actuator is reduced in size and is applicable to a vibrator. The actuator comprises: displacement generating means formed of a magnetic substance having magnetostriction; a movable member fixed to the displacement generating means, which movable member is movable in the direction of displacement of the displacement generating means; first magnetic field generating means, provided around the displacement generating means, for applying a magnetic field to the displacement generating means and second magnetic field generating means for applying a magnetic bias; a magnetic circuit component for constituting, along with the movable member, a main part of a closed magnetic circuit, within which magnetic circuit component the displacement generating means and the magnetic field generating means are stored; and an elastic member, disposed within the magnetic circuit component, for applying a compression force to the displacement generating means via the movable member in the direction of displacement of the displacement generating means.
摘要翻译： 磁力型致动器能够减小输入功率损耗并增加输出，该致动器的尺寸减小并且可应用于振动器。 致动器包括：由具有磁致伸缩的磁性物质形成的位移产生装置; 固定在所述位移产生装置上的可动构件，所述可动构件能够在位移产生装置的移动方向上移动; 第一磁场产生装置，设置在位移产生装置周围，用于向位移发生装置施加磁场;第二磁场产生装置，用于施加磁偏置; 磁路部件，与可动部件一起构成闭合磁路的主要部分，磁路部件中存在位移产生装置和磁场产生装置; 以及弹性构件，其设置在所述磁路部件内，用于经由所述可移动部件沿所述位移产生装置的位移方向向所述位移产生装置施加压缩力。
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公开(公告)号：US20050000230A1
公开(公告)日：2005-01-06
申请号：US10718518
申请日：2003-11-24
申请人： Akiko Saito , Tadahiko Kobayashi , Takao Sawa , Masashi Sahashi
发明人： Akiko Saito , Tadahiko Kobayashi , Takao Sawa , Masashi Sahashi
摘要： The magnetic material for magnetic refrigeration of the present invention is characterized by exhibiting, in a certain temperature region, preferably, only in part of a temperature region from 200 K to 350 K, an inflection point at which a second order differential coefficient of a magnetization curve changes from positive to negative with respect to a magnetic field, within the range of this magnetic field formed using a permanent magnet unit. This magnetic material of the present invention can generate a low temperature by using a relatively low magnetic field, by transferring the entropy between the electron spin system and the lattice system near the temperature at which an inflection point appears on the magnetization curve. Examples of the magnetic material meeting this condition are La(Fe,Si)13, (Hf,Ta)Fe2, (Ti,Sc)Fe2, and (Nb,Mo)Fe2, each containing 50 to 60 atomic % of transition metals such as Fe.
摘要翻译： 本发明的磁性制冷用磁性材料的特征在于，在一定的温度范围内优选仅显示200K〜350K的温度区域的一部分，其中磁化强度的二阶微分系数 在使用永久磁铁单元形成的该磁场的范围内，曲线相对于磁场从正向变化为负。 本发明的这种磁性材料可以通过在电磁自旋系统和晶格系统之间传递熵在靠近磁化曲线上出现拐点的温度下，通过使用较低的磁场而产生低温。 满足该条件的磁性材料的实例是La（Fe，Si）13，（Hf，Ta）Fe 2，（Ti，Sc）Fe 2和（Nb，Mo）Fe 2，每个含有50至60原子％的过渡金属 如Fe。
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9.发明授权Yoke-type head with magneto-resistance effect film recessed from medium facing surface and extending across magnetic gap 失效具有磁阻效应膜的轭型磁头，从介质面向表面凹陷并延伸穿过磁隙公开(公告)号：US06369992B1
公开(公告)日：2002-04-09
申请号：US08909687
申请日：1997-08-12
申请人： Hiroaki Yoda , Atsuhito Sawabe , Hitoshi Iwasaki , Yuichi Ohsawa , Masashi Sahashi , Tadahiko Kobayashi
发明人： Hiroaki Yoda , Atsuhito Sawabe , Hitoshi Iwasaki , Yuichi Ohsawa , Masashi Sahashi , Tadahiko Kobayashi
IPC分类号： G11B539
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3903 , G11B5/3977 , G11B2005/3996
摘要： A magneto-resistance effect head records and reproduces recorded magnetic material. The magneto-resistance effect head has a magneto-resistance effect film connected to a pair of leads. Additionally, a magnetic yoke, with a first and second magnetic yoke member, directs a signal magnetic field from a recording medium to the magneto-resistance effect film. The magneto-resistance effect head is constructed such that the first and second magnetic yoke members have surfaces that face the recording medium. The surfaces of the first and second magnetic yoke members have a magnetic gap between them. Additionally, the magneto-resistance effect film is recessed from the medium facing surfaces by a predetermined distance. Moreover, the first and second magnetic yoke members are aligned almost in parallel with the magnetic flux flow from the recording medium to the first magnetic yoke member, the magneto-resistance effect film, and the second magnetic yoke member.
摘要翻译： 磁阻效应头记录和再现记录的磁性材料。 磁阻效应头具有连接到一对引线的磁阻效应膜。 此外，具有第一和第二磁轭构件的磁轭将来自记录介质的信号磁场引导到磁阻效应膜。 磁阻效应头被构造成使得第一和第二磁轭构件具有面向记录介质的表面。 第一和第二磁轭构件的表面之间具有磁隙。 此外，磁阻效应膜从面向介质的表面凹陷预定距离。 此外，第一和第二磁轭构件几乎与从记录介质到第一磁轭构件，磁阻效应膜和第二磁轭构件的磁通流平行排列。
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公开(公告)号：US5601662A
公开(公告)日：1997-02-11
申请号：US545628
申请日：1990-06-29
CPC分类号： H01F41/34 , G01L1/125 , G01L1/127 , G01L3/102 , G01L3/103 , G01L3/105 , H01F1/0306 , H01F1/15341
摘要： There is disclosed a method of introducing magnetic anisotropy into a magnetic material, in which a laser beam is selectively radiated on the surface of a magnetic material to locally heat it, thereby forming a pattern of boundary phases for magnetically dividing a main phase of the magnetic material into a plurality of regions, and magnetic domains of the divided main phase regions are controlled to induce magnetic anisotropy in the main phase regions.
摘要翻译： 公开了一种将磁各向异性引入到磁性材料中的方法，其中激光束被选择性地辐射在磁性材料的表面上以局部加热，从而形成用于磁分离磁性体的主相的边界相的图案 材料进入多个区域，并且分割的主相区域的磁畴被控制以在主相区域中引起磁各向异性。
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