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    • 2. 发明授权
    • Torque detecting apparatus
    • 转矩检测装置
    • US5062062A
    • 1991-10-29
    • US460235
    • 1989-12-29
    • Yuji NishibeYutaka NonomuraMasaaki AbeMasaharu TakeuchiKouji Tsukada
    • Yuji NishibeYutaka NonomuraMasaaki AbeMasaharu TakeuchiKouji Tsukada
    • G01D3/02G01D3/036G01L3/10
    • G01L3/102G01D3/022G01D3/0365G01L3/105
    • A physical quantity detecting apparatus for detecting a physical quantity of an object of measurement. The position of movement of an object of measurement is divided into a given number of segments in advance. The output of a physical quantity sensor for detecting a physical quantity of the object of measurement is calculated on the basis of a correction operation expression which has an independent coefficient group for each segment so as to correct the offset component and the sensitivity. Thus, a physical quantity such as a transmitted torque is detected with high accuracy at real time without being influenced by the fluctuations of the offset output and the sensitivity depending on the position of rotation. The correction operation may also be performed using the temperature dependence function of the offset signal and the temperature dependence function of the sensitivity, thereby enabling the accurate measurement of the physical quantity without the influence of the temperature change.
    • 一种用于检测测量对象的物理量的物理量检测装置。 将测量对象的移动位置预先分为给定数量的段。 基于对每个段具有独立系数组的校正运算表达式来计算用于检测测量对象的物理量的物理量传感器的输出,以便校正偏移分量和灵敏度。 因此,实时地高精度地检测诸如传输转矩的物理量,而不受偏移输出的波动和根据旋转位置的灵敏度的影响。 还可以使用偏移信号的温度依赖函数和灵敏度的温度依赖函数来执行校正操作,从而能够在不受温度变化的影响的情况下精确地测量物理量。
    • 3. 发明授权
    • Torque measuring apparatus
    • 扭矩测量仪
    • US4803885A
    • 1989-02-14
    • US39390
    • 1987-04-17
    • Yutaka NonomuraKouji TsukadaYuji NishibeMasaharu Takeuchi
    • Yutaka NonomuraKouji TsukadaYuji NishibeMasaharu Takeuchi
    • G01L3/10
    • G01L3/102G01L3/105Y10S73/02
    • A torque measuring apparatus including a magnetic detection device for non-contact measuring strains in a rotating shaft of ferromagnetic material which is adapted to transmit torques, the detected strains being used to determine the levels of transmitted torques, the magnetic detection device including an exciting coil device wound around the outer periphery of the rotating shaft and adapted to magnetize the rotating shaft in its axial direction; a detecting core ring device in the form of an integral unit which includes a plurality of detecting cores arranged around the circumferential area of the rotating shaft to be magnetized equidistantly to form a ring, each of the detecting cores forming an independent magnetic circuit between the detecting core and the rotating shaft; and at least one magnetic detecting element for detecting a variable magnetic flux in each of the detecting cores depending on the level of the transmitted torque; whereby the strains in the rotating shaft can be non-contact measured based on the sum of detection signals from the magnetic sensors each of which is formed by each of the detecting cores and the corresponding magnetic detecting elements.
    • 一种扭矩测量装置,包括用于在铁磁材料的旋转轴中的非接触测量应变的磁性检测装置,其适于传递扭矩,所检测的应变用于确定传递扭矩的水平,所述磁性检测装置包括励磁线圈 所述装置缠绕在所述旋转轴的外周上并且适于在所述旋转轴的轴向方向上使所述旋转轴磁化; 形成一体化单元的检测铁芯环装置,其包括多个检测芯,其布置在旋转轴的圆周区域周围等间隔地磁化以形成环,每个检测芯在检测之间形成独立的磁路 芯和旋转轴; 以及至少一个磁检测元件,用于根据传递转矩的水平检测每个检测铁芯中的可变磁通量; 由此可以根据来自磁传感器的检测信号的总和来测量旋转轴中的应变,每个检测信号由每个检测芯和相应的磁检测元件形成。
    • 4. 发明授权
    • Multilayered magnetic sensor having conductive layer within megnetic
layer
    • 多层磁传感器在磁性层内具有导电层
    • US5838154A
    • 1998-11-17
    • US615954
    • 1996-03-14
    • Takeshi MorikawaYuji NishibeHideya YamaderaYutaka NonomuraMasaharu TakeuchiJiro Sakata
    • Takeshi MorikawaYuji NishibeHideya YamaderaYutaka NonomuraMasaharu TakeuchiJiro Sakata
    • G01D5/20G01R33/02H01L43/00
    • G01R33/02
    • A magnetic sensor element 1 includes a substrate 10, a conductive layer 12 of a conductive material, and a magnetic layer 11 of a magnetic material, which encloses the conductive layer 12. AC is applied to the element from a drive power source 50, and a detector 60 detects an impedance change due to an external magnetic field. The magnetic layer 11 is bestowed with magnetic anisotropy in a direction orthogonal to the direction of energization of the element 1. With the provision of the conductive layer 12 of conductive material and also with magnetic anisotropy imparted to the magnetic layer 1, the element 1 may be made a low resistivity element. A reactance change and a resistance change of the element due to an external magnetic field change, thus can be effectively detected in drive frequencies two orders of magnitude lower than in the case of a prior art magnetic sensor element. The magnetic anisotropy of the magnetic layer 11 is controlled to prevent magnetic field detection dynamic range variations with drive frequency.
    • 磁传感器元件1包括衬底10,导电材料的导电层12和磁性材料的磁性层11,其包围导电层12.AC从驱动电源50施加到元件,并且 检测器60检测由外部磁场引起的阻抗变化。 磁性层11在与元件1的通电方向正交的方向上具有磁各向异性。通过提供导电材料的导电层12以及赋予磁性层1的磁各向异性,元件1可以 制成低电阻率元件。 由于外部磁场变化引起的元件的电抗变化和电阻变化,因此可以在比现有技术的磁性传感器元件的情况下低两个数量级的驱动频率中被有效地检测。 控制磁性层11的磁各向异性以防止磁场检测与驱动频率的动态范围变化。
    • 5. 发明授权
    • Torque detecting apparatus
    • 转矩检测装置
    • US4811609A
    • 1989-03-14
    • US192621
    • 1988-05-11
    • Yuji NishibeYutaka NonomuraMasaharu Takeuchi
    • Yuji NishibeYutaka NonomuraMasaharu Takeuchi
    • G01L1/00G01L3/10
    • G01L3/102G01L3/105
    • A torque detecting apparatus for measuring the amount of magnetostriction of a rotary magnetic material which transmits torque by means of a magnetic sensor, and detecting the transmitted torque on the basis of the measured amount of magnetostriction. The apparatus comprises a magnetic sensor for measuring the amount of magnetostriction of the rotary magnetic material, a demagnetization coil which is opposed to the rotary magnetic material so as to restore the rotary magnetic material magnetized by a disturbing magnetic field to the state of zero magnetization, a demagnetization circuit for applying an oscillating current to the demagnetization coil so as to generate in the rotary magnetic material a periodic damping oscillating magnetic field having the maximum value larger than the coercive force of the rotary magnetic material; and a trigger circuit for outputting a drive timing signal for the demagnetization circuit. The transmitted torque is detected without being influenced by a disturbing magnetic field.
    • 一种扭矩检测装置,用于测量通过磁传感器传递扭矩的旋转磁性材料的磁致伸缩量,并且基于测量的磁致伸缩量来检测传递的扭矩。 该装置包括用于测量旋转磁性材料的磁致伸缩量的磁传感器,与旋转磁性材料相对的去磁线圈,以将由干扰磁场磁化的旋转磁性材料恢复到零磁化的状态, 用于向所述去磁线圈施加振荡电流以在所述旋转磁性材料中产生具有大于所述旋转磁性材料的矫顽力的最大值的周期性阻尼振荡磁场的去磁电路; 以及用于输出用于去磁电路的驱动定时信号的触发电路。 在不受干扰磁场影响的情况下检测发送的转矩。
    • 8. 发明授权
    • Stress detector
    • 应力检测器
    • US4716773A
    • 1988-01-05
    • US815252
    • 1985-12-31
    • Yutaka NonomuraJun SugiyamaHirofumi KomatsubaraMasaharu Takeuchi
    • Yutaka NonomuraJun SugiyamaHirofumi KomatsubaraMasaharu Takeuchi
    • G01L1/00G01L3/10G01B7/24
    • G01L3/102G01L1/125G01L1/127G01L3/105
    • 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.
    • 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。
    • 9. 发明授权
    • Torque measuring apparatus
    • 扭矩测量仪
    • US4697459A
    • 1987-10-06
    • US903139
    • 1986-09-03
    • Yutaka NonomuraJun SugiyamaHirofumi KomatsubaraMasaharu Takeuchi
    • Yutaka NonomuraJun SugiyamaHirofumi KomatsubaraMasaharu Takeuchi
    • G01L3/10G01L25/00
    • G01L3/102G01L3/105
    • A torque measuring apparatus for detecting torque in a noncontacting state on the basis of the magnetostrictive amount of a rotary magnetic member for transmitting the torque which is detected by means of a magnetic sensor. The measuring apparatus comprises: a timing signal generator for dividing the rotational angle of the rotary magnetic member into a given number of segments and outputting a predetermined timing signal every time a rotational angle of the rotary magnetic member passes each segment; an offset signal generator for setting in advance for each segment an offset signal to be output from the magnetic sensor depending upon the rotational angle of the rotary magnetic member, and subsequently outputting an offset signal which corresponds to a respective segment on the basis of the timing signal; and a subtractor for subtracting the offset signal from the detection signal of the magnetic sensor at each segment, whereby the transmitted torque of the rotary magnetic member is measured on the basis of the output of the subtractor.
    • 一种扭矩测量装置,用于基于通过磁传感器检测的用于传递转矩的旋转磁性构件的磁致伸缩量来检测非接触状态下的转矩。 测量装置包括:定时信号发生器,用于将旋转磁性构件的旋转角度分成给定数量的段,并且每当旋转磁性构件的旋转角度经过每个段时输出预定的定时信号; 偏移信号发生器,用于根据旋转磁性构件的旋转角度预先为每个段设置要从磁性传感器输出的偏移信号,并且随后基于定时输出对应于各个段的偏移信号 信号; 以及减法器,用于从每个段处的磁传感器的检测信号中减去偏移信号,由此基于减法器的输出来测量旋转磁性构件的传递转矩。