公开(公告)号：US5640088A

公开(公告)日：1997-06-17

申请号：US381687

申请日：1995-01-26

Applicant: Jun Sasahara ,  Hajime Goto ,  Tadahiro Kubota

Inventor： Jun Sasahara ,  Hajime Goto ,  Tadahiro Kubota

IPC: G01L1/12 ,  G01N27/72 ,  G01B7/24 ,  B05D5/12

CPC classification number: G01N27/72 ,  G01L1/127

Abstract: In measuring a stress of a soft magnetic metal wire, an A.C. magnetic field exceeding a coercive force of the metal wire is applied to the soft magnetic metal wire with a tensile load applied thereto, using an exciting coil, thereby inducing an A.C. electromotive force through a detecting coil. An effective value of one or more higher harmonic wave components including a stress information of the soft magnetic metal wire in the waveform of the A.C. electromotive force is determined as a measurement amount. By taking higher harmonic wave components as an amount in this manner, the stress of the soft magnetic metal wire 4 can be measured correctly.

Abstract translation: 在测量软磁金属线的应力时，使用励磁线圈将超过金属线的矫顽力的交流磁场施加到施加有拉伸载荷的软磁金属线上，由此引起交流电动势通过 检测线圈。 确定包括在A.C.电动势的波形中的软磁金属线的应力信息的一个或多个高次谐波分量的有效值作为测量量。 通过以这种方式获得高次谐波成分量，可以正确测量软磁金属线4的应力。

公开(公告)号：US5394756A

公开(公告)日：1995-03-07

申请号：US051876

申请日：1993-04-26

Applicant: Par Gustafsson ,  Jan O. Nordvall ,  Lars rnholmer

Inventor： Par Gustafsson ,  Jan O. Nordvall ,  Lars rnholmer

IPC: G01L1/00 ,  G01L1/12 ,  G01L5/16

CPC classification number: G01L1/127 ,  G01L1/125 ,  Y10S73/02

Abstract: A puck for a three-dimensional magnetoelastic force transducer, with a cylindrically-shaped body having a circular cross-section, a semi-spherically-shaped first end surface and a second end surface having an annular flange with an outer diameter corresponding to the diameter of the circular cross section of the body; the body comprising a substantially solid magnetoelastic material with a center axis extending between the middle of the first and second bottom surfaces; the body having at least three force-measuring zones equidistantly spaced from the center axis and symmetrically distributed within the body; each of the at least three force-measuring zones having respective holes for receiving excitation and measuring windings; and force transmission paths extending between the intersection of the center axis and the first end surface, the intersection forming a point of application of force to the force transducer, and each of the at least three force-measuring zones to the annular flange.

Abstract translation: 一种用于三维磁弹力传感器的圆盘，具有圆形横截面的圆柱形主体，半球形的第一端面和具有环形凸缘的第二端面，所述环形凸缘的外径对应于直径 的身体的圆形横截面; 所述主体包括基本上为固体的磁弹性材料，其中心轴线在所述第一和第二底表面的中间延伸; 所述主体具有至少三个与所述中心轴线等距离并且对称地分布在所述主体内的力测量区域; 所述至少三个力测量区域中的每一个具有用于接收激励和测量绕组的相应孔; 以及在所述中心轴线和所述第一端面的相交处之间延伸的力传递路径，所述交点形成对所述力传感器施加力的点，以及所述至少三个力测量区域中的每一个到所述环形凸缘。

公开(公告)号：US4955241A

公开(公告)日：1990-09-11

申请号：US361317

申请日：1989-06-05

Applicant: Edmund Schiessle ,  Khaldoun Alasafi

Inventor： Edmund Schiessle ,  Khaldoun Alasafi

IPC: G01L1/00 ,  G01L1/12

CPC classification number: G01L1/127 ,  G01L1/125

Abstract: A magnetoelastic force-measuring device is proposed which has an annular thrust body possessing magnetostrictive properties and bearing a ring coil. To enhance the measuring sensitivity in conjunction with simultaneous good thermal error compensation, a sleeved tension body, likewise possessing magnetostrictive properties and bearing a ring coil, is arranged coaxially in the annular thrust body to fit in such a way that, given the introduction of a force, the one body is subjected to thrust and the other to tension. In this connection, the magnetostrictive properties are formed by a soft magnetic measuring film--preferably of amorphous metal--which applied in each case to the body, and the two ring coils are connected up to make an inductive half-bridge.

Abstract translation: 提出一种磁弹力测量装置，其具有具有磁致伸缩特性并具有环形线圈的环形推力体。 为了提高测量灵敏度并结合同时良好的热误差补偿，同样拥有磁致伸缩特性并带有环形线圈的套筒式张力体同轴地布置在环形推力体中，以适应于这样一种方式： 力量，一个身体受到推力，另一个身体受到张力。 在这方面，磁致伸缩特性由软磁测量膜（优选非晶态金属）形成，其中每一种都被施加到主体上，并且两个环形线圈连接起来形成感应半桥。

公开(公告)号：US4823621A

公开(公告)日：1989-04-25

申请号：US188204

申请日：1988-04-29

Applicant: Jarl Sobel ,  Lars rnholmer

Inventor： Jarl Sobel ,  Lars rnholmer

IPC: G01L1/12

CPC classification number: G01L1/127 ,  G01L1/125 ,  Y10S73/02

Abstract: A magnetoelastic force transducer comprising two identical, cylindrical bodies defining a hollow magnetic core and held together by means of a force-transmitting stud bolt has its measuring and excitation windings located in the core. The interior of the core is constructed such that a thin cylindrical tubular wall is formed opposite to a respective measuring winding in each one of the bodies, whereby when the core is force-loaded via the stud bolt a compressive stress arises in one of these tubular walls and a tensile stress arises in the other. To eliminate a possible measurement signal at zero applied force a magnetically asymmetric center pole in the form of a punched disk of a soft-magnetic material and having the same diameter as the core and having a foil of a similar material secured on one side is located between the bodies. The hickness of the foil determines the magnitude of the signal adjustment.

公开(公告)号：US4716773A

公开(公告)日：1988-01-05

申请号：US815252

申请日：1985-12-31

Applicant: Yutaka Nonomura ,  Jun Sugiyama ,  Hirofumi Komatsubara ,  Masaharu Takeuchi

Inventor： Yutaka Nonomura ,  Jun Sugiyama ,  Hirofumi Komatsubara ,  Masaharu Takeuchi

IPC: G01L1/00 ,  G01L3/10 ,  G01B7/24

CPC classification number: G01L3/102 ,  G01L1/125 ,  G01L1/127 ,  G01L3/105

Abstract: A stress detector including an AC power source for generating an AC symmetrical wave form voltage, an exciting coil driven by the AC power source for alternatingly magnetizing at least a portion of a ferromagnetic material to be measured in a predetermined direction, a detecting coil for detecting a magnetic flux generated due to the alternating magnetization, and an adder circuit for taking out a part of a voltage applied to the exciting coil, setting an amplitude and a phase of a wave form of the taken-out part of the voltage to preset values, adding the voltage thus obtained to a voltage induced in the detecting coil. The detector gives an output signal representative of a value of stress applied to the material to be measured as a variation either in amplitude or phase depending on the preset phase.

Abstract translation: 一种应力检测器，包括用于产生AC对称波形电压的AC电源，由AC电源驱动的用于在预定方向上交替地磁化待测铁磁材料的至少一部分的励磁线圈，用于检测的检测线圈 由于交变磁化产生的磁通量，以及加法电路，用于取出施加到励磁线圈的一部分电压，将电压的取出部分的波形的振幅和相位设定为预设值 将由此获得的电压加到检测线圈中感应的电压。 检测器给出一个输出信号，代表施加到待测量材料的应力值，作为幅度或相位根据预设相位的变化。

公开(公告)号：US4193294A

公开(公告)日：1980-03-18

申请号：US863531

申请日：1977-12-22

Applicant: Lennart Forslund ,  Stig Jordinger ,  Pavel Kolavcic

Inventor： Lennart Forslund ,  Stig Jordinger ,  Pavel Kolavcic

IPC: G01L1/12

CPC classification number: G01L1/127 ,  G01L1/125 ,  Y10S73/02

Abstract: A force measuring magnetoelastic transducer includes a core of magnetostrictive material with apertures, in which excitation and measuring windings are arranged, and between which a measuring zone is formed, in which the dominating part of the magnetomotive force is consumed and in which the stress therefore determines the output signal of the transducer. The core further includes apertures for controlling the force flux, which are so arranged that some measuring zone portions are substantially subjected to compressive stress and other measuring zone portions are substantially subjected to tensile stress when a force is acting on the transducer. Means are provided for exciting the transducer with an alternating current of such magnitude that the signals generated by said compressive and tensile stresses, within a predetermined range of load, show deviations from linearity with negative sign for compressive stress and positive sign for tensile stress. The output signals are summed in such proportions that the deviations from linearity of the signals compensate each other.

Abstract translation: 测量磁弹性换能器的力包括具有孔的磁致伸缩材料芯，其中布置有激励和测量绕组，并且其间形成有测量区域，其中磁动势的主要部分被消耗，并且其中应力由此确定 换能器的输出信号。 芯部还包括用于控制力通量的孔，其布置成使得一些测量区域部分基本上受到压缩应力，并且当力作用在换能器上时，其它测量区域部分基本上受到拉伸应力。 提供了用于以这样大的交流电激励换能器的装置，使得在预定负载范围内由所述压缩和拉伸应力产生的信号显示出与压缩应力的负号和拉伸应力的正号的线性偏差。 输出信号以这样的比例相加，使得信号的线性度的偏差彼此补偿。

公开(公告)号：US3980947A

公开(公告)日：1976-09-14

申请号：US573797

申请日：1975-05-01

Applicant: Nils Ove Bielsten ,  Orvar Dahle ,  Ronald Grek ,  Bertil Hoffman ,  Sture Siby ,  Ake Widehn

Inventor： Nils Ove Bielsten ,  Orvar Dahle ,  Ronald Grek ,  Bertil Hoffman ,  Sture Siby ,  Ake Widehn

IPC: G01L1/00 ,  G01L1/12 ,  G01N27/72 ,  G01R33/18

CPC classification number: G01N27/72 ,  G01L1/125 ,  G01L1/127 ,  Y10S73/02

Abstract: In measuring mechanical stresses in an object of hardened and tempered steel with a magnetic transducer of the type which comprises a magnetizing circuit for generating a magnetic field in the object and a measuring circuit for sensing the changes in the magnetic field which occur in the object when it is subjected to mechanical forces, in order to reduce the creep of the measuring signal which occurs in the case of continuous feeding, the magnetizing circuit is energize with energy in the form of AC pulses of a pulse length between 20 and 120 milliseconds.

Abstract translation: 在使用包括用于在物体中产生磁场的磁化电路的类型的磁换能器测量硬化和回火钢的物体中的机械应力时，以及用于感测物体中出现的磁场变化的测量电路， 它受到机械力，为了减少在连续进给的情况下发生的测量信号的蠕变，磁化电路以20到120毫秒之间的脉冲长度的交流脉冲的形式激励能量。

公开(公告)号：US3798537A

公开(公告)日：1974-03-19

申请号：US3798537D

申请日：1969-12-10

Applicant: JONES & LAUGHLIN STEEL CORP

Inventor： DAHM J

IPC: G01B7/24 ,  B21B38/02 ,  G01B7/00 ,  G01L1/12 ,  G01L5/04 ,  G01R33/00

CPC classification number: G01L5/045 ,  B21B38/02 ,  G01L1/125 ,  G01L1/127

Abstract: Method and apparatus for measuring stresses in a ferromagnetic material are disclosed. A magnetic means is employed to establish magnetic flux flow paths in a ferromagnetic material in two directions at right angles to one another. Additional means is provided for determining the resultant flux flow developed by said paths whereby the magnitude of a stress applied to the material in one of said two directions is ascertained.

Abstract translation: 公开了用于测量铁磁材料中的应力的方法和装置。 使用磁性装置在两个方向上在铁磁材料中建立彼此成直角的磁通流动路径。 提供附加装置，用于确定由所述路径产生的合成通量流，由此确定施加到所述两个方向之一上的材料的应力的大小。

公开(公告)号：US3737994A

公开(公告)日：1973-06-12

申请号：US3737994D

申请日：1972-05-15

Applicant: MEIDENSHA ELECTRIC MFG CO LTD

Inventor： NISHIMURA K

IPC: G01B7/24 ,  G01L1/12 ,  G01N3/00 ,  G01N3/28 ,  H01F7/06

CPC classification number: G01N3/00 ,  G01B7/24 ,  G01L1/125 ,  G01L1/127 ,  G01N3/28 ,  G01N2203/0222 ,  Y10S73/02 ,  Y10T29/4902 ,  Y10T29/49073 ,  Y10T29/49078

Abstract: Herein disclosed is a method for manufacturing a mechanical stress detecting device using a block of laminated magnetic plates and a pair of non-magnetic side plates between which the block of the laminated magnetic plates is tightly interposed. The block of the magnetic plates and the side plates attached thereto have formed therein four apertures extending from one of the side plates to the other and symmetrically spaced apart from each other at an angle of about 90*, the apertures being located in a manner to have the phantom lines joining diametrically opposed pairs of the apertures are angled at about 45* to the direction in which a mechanical stress is applied to the block of the laminated magnetic plates. The detecting device is produced by heating the block of the laminated magnetic plates tightened by the side plates to the Curie point with a magnetizing coil passed through one pair of apertures in the block and cooling the block of the laminated plates through a predetermined range of temperature with the magnetizing coil kept energized, whereby a magnetic core having a monoaxial magneto-anisotropy is obtained. The magnetizing coil is then removed and a detecting coil is passed through another pair of apertures in the block.

Abstract translation: 这里公开了一种使用层叠磁性板块和一对非磁性侧板的机械应力检测装置的制造方法，在该非磁性侧板之间夹紧层叠磁性板的块。 磁性板和附接到其上的侧板的块形成有从一个侧板延伸到另一个的四个孔，并以约90度的角度彼此对称地间隔开，孔以 连接成直径相对的一对孔的假想线与向层叠磁性板的块施加机械应力的方向成45°角。 检测装置是通过将通过侧板紧固的层叠磁性板的块加热到居里点而制成的，其中磁化线圈穿过块中的一对孔，并将层压板的块在预定温度范围内冷却 磁化线圈保持通电，从而获得具有单轴磁各向异性的磁芯。 然后去除磁化线圈，并且检测线圈通过块中的另一对孔。

公开(公告)号：US3681982A

公开(公告)日：1972-08-08

申请号：US3681982D

申请日：1971-06-15

Applicant: YASKAWA DENKI SEISAKUSHO KK

Inventor： HIRATSUKA MICHIO ,  ISHII JIRO ,  GOTO TADAHIKO ,  TAKEDA ATSUO

IPC: G01L1/12 ,  G01S1/12

CPC classification number: G01L1/127 ,  G01L1/125 ,  Y10S73/02

Abstract: An apparatus and a transducer system for detecting and measuring mechanical stress applied on the transducer composed of at least one magnetic core of laminated silicon steel sheet construction, a plurality of coils wound on the magnetic core, a constant voltage a.c. source connected to these coils, pick-up means for picking up any variation caused in the current flowing through the coils due to the application of a load or stress on the magnetic core, a rectifying means for rectifying the thus pickedup variation in the current, a compensating means for compensating the zero point of the response characteristic of the transducer, a prestress applying means for improving the linearity of the response curve of the characteristics, whereby the magnitude of the load applied on the magnetic core is determined from the reading on a voltmeter or ammeter also included in the transducer system.

Abstract translation: 一种用于检测和测量施加在由层压硅钢板结构的至少一个磁芯，缠绕在磁芯上的多个线圈组成的换能器上的机械应力的装置和换能器系统，恒定电压a.c. 源极连接到这些线圈，拾取装置，用于拾取由于在磁芯上施加负载或应力而流过线圈的电流引起的任何变化;整流装置，用于整流由此引起的变化 电流，用于补偿换能器的响应特性的零点的补偿装置，用于改善特性的响应曲线的线性的预应力施加装置，由此根据读数确定施加在磁芯上的载荷的大小 也包括在换能器系统中的电压表或电流表上。