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    • 3. 发明授权
    • Magneto-resistive angle sensing device with a temperature-stable zero
point
    • 具有温度稳定零点的磁阻角度检测装置
    • US6104187A
    • 2000-08-15
    • US68777
    • 1998-05-14
    • Klaus MarxFranz Jost
    • Klaus MarxFranz Jost
    • G01B7/30G01B7/00G01D5/14G01D5/16G01R33/09G01B7/14G01D5/18G01R33/06
    • G01D5/145G01R33/09
    • The contactless magneto-resistive angle sensing device (1) includes two sensor components (10,11) oriented at a fixed angle relative to each other, a controllable power supply (PW) to heat and maintain the sensor components (10,11) at different temperatures, a magnet (MG) producing a magnetic field (B) in which the sensor components are arranged and an evaluating device (12) to receive output signals (U1,U2) from the sensor components (10,11). Each sensor component (10,11) includes magneto-resistive resistors (MR) connected in a respective bridge (B1,B2) having input terminals (I1,I1';I2,I2') for supply of current and output terminals (O1,O1';O2,O2') for the output signal (U1,U2). In a rotating magnetic field the evaluating device (12) analyzes the output signals (U1,U2) as a function of field angle and temperature to determine a reference angle at which the output signals of the angle sensing device have a minimum temperature dependence and stores the reference angle as a zero point for subsequent angular measurements. The sensor components are then mounted on a rotatable part whose angular position is to be subsequently measured at an angular position in relation to a stationary magnetic corresponding to the reference angle.
    • PCT No.PCT / DE97 / 01834 Sec。 371日期:1998年5月14日 102(e)日期1998年5月14日PCT 1997年8月23日PCT公布。 第WO98 / 14792号公报 日期1998年4月9日非接触磁阻角度感测装置(1)包括相对于彼此以固定角度定向的两个传感器部件(10,11),用于加热和维持传感器部件的可控电源(PW) 10,11)在不同温度下,产生其中布置有传感器部件的磁场(B)的磁体(MG)和从传感器部件(10,10)接收输出信号(U1,U2)的评估装置(12) 11)。 每个传感器组件(10,11)包括连接在具有输入端(I1,I1'; I2,I2')的相应桥(B1,B2)中的磁阻电阻(MR),用于提供电流和输出端(O1, O1'; O2,O2'),用于输出信号(U1,U2)。 在旋转磁场中,评估装置(12)根据场角和温度分析输出信号(U1,U2),以确定角度检测装置的输出信号具有最低温度依赖性并存储 参考角度作为后续角度测量的零点。 然后将传感器部件安装在可旋转部分上,其角位置将随着相对于与参考角度相对应的固定磁体的角度位置被测量。
    • 6. 发明授权
    • Device and method for determining a magnetic field as to its intensity and direction
    • 用于确定其强度和方向的磁场的装置和方法
    • US06724184B1
    • 2004-04-20
    • US09890367
    • 2001-11-05
    • Klaus MarxHartmut Kittel
    • Klaus MarxHartmut Kittel
    • G01R3312
    • G01R33/02
    • A device and a method for determining a magnetic field with respect to its intensity and direction at at least one detection location, and uses a first arrangement for superimposing an auxiliary magnetic field, known at least in intensity, on the magnetic field, and a second arrangement for measuring at least the direction of the magnetic field resulting from the superimposition of the magnetic field to be determined and of the auxiliary magnetic field at the detection location. The magnetic field is determined at the detection location in that the resultant magnetic field produced by the magnetic field to be determined and the auxiliary magnetic field is determined with respect to its direction for at least two different auxiliary magnetic fields; and the magnetic field to be determined is calculated therefrom. The method is especially suited for determining the intensity and direction of a magnetic field in the immediate vicinity of the surface of a magnet.
    • 一种用于在至少一个检测位置处相对于其强度和方向确定磁场的装置和方法,并且使用用于将至少在强度上已知的辅助磁场叠加在磁场上的第一装置和第二 用于至少测量由待确定的磁场和检测位置处的辅助磁场的叠加产生的磁场的方向的装置。 在检测位置处确定磁场,因为由待确定的磁场产生的合成磁场和关于其至少两个不同辅助磁场的方向的辅助磁场被确定; 由此计算要确定的磁场。 该方法特别适用于确定磁铁表面附近磁场的强度和方向。
    • 8. 发明授权
    • Arrangement for and method of detecting the angle of rotation of a rotatable element
    • 用于检测可旋转元件的旋转角度的装置和方法
    • US06433535B1
    • 2002-08-13
    • US09530077
    • 2000-04-20
    • Klaus MarxHartmut KittelFranz Jost
    • Klaus MarxHartmut KittelFranz Jost
    • G01B714
    • G01B7/00G01B7/14G01B7/30G01D5/16G01D5/18G01D5/20G01P3/487G01R33/06G01R33/07
    • An arrangement for detecting the angle of rotation of a rotatable element, in which, with evaluation of magnetically variable properties of a sensor arrangement, a first magnetic field, generated or varied by a rotatable element, is detectable in an evaluation circuit and usable for ascertaining the angle of rotation, wherein the sensor arrangement, utilizing the magnetoresistive effect, furnishes signals that can be associated unambiguously with one direction of the magnetic field Bext over a first angular range, in particular an angular range of 360°, having means to for is selective application of a magnetic auxiliary field BH the sensor arrangement, by means of which signals a modification of the signals that can be associated with the direction of the first magnetic field Bext, attainable for the sake of unambiguous association of an angle over a second angular range, in particular 360°.
    • 用于检测可旋转元件的旋转角度的装置,其中通过评估传感器装置的磁性可变特性,由可旋转元件产生或改变的第一磁场,可在评估电路中检测并且可用于确定 旋转角度,其中利用磁阻效应的传感器装置提供可以在第一角度范围内,特别是360°的角度范围内明确地与磁场Bext的一个方向相关联的信号, 磁性辅助场BH选择性地施加传感器装置,传感器装置通过信号传递可以与第一磁场Bext的方向相关联的信号的修改,以便在第二角度上明确地关联角度 范围,特别是360°。