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1.发明授权
公开(公告)号：US5838154A
公开(公告)日：1998-11-17
申请号：US615954
申请日：1996-03-14
申请人： Takeshi Morikawa , Yuji Nishibe , Hideya Yamadera , Yutaka Nonomura , Masaharu Takeuchi , Jiro Sakata
发明人： Takeshi Morikawa , Yuji Nishibe , Hideya Yamadera , Yutaka Nonomura , Masaharu Takeuchi , Jiro Sakata
CPC分类号： G01R33/02
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US5353636A
公开(公告)日：1994-10-11
申请号：US95620
申请日：1993-07-21
申请人： Kazuhiro Sakurai , Yutaka Obuchi , Yuji Nishibe , Yutaka Nonomura , Kouji Tsukada , Masaharu Takeuchi , Masanori Miyashita
发明人： Kazuhiro Sakurai , Yutaka Obuchi , Yuji Nishibe , Yutaka Nonomura , Kouji Tsukada , Masaharu Takeuchi , Masanori Miyashita
CPC分类号： G01M15/11
摘要： A torque sensor which can detect instantaneous output torque of the engine is disposed on the output shaft of the engine, and the output signal thereof is frequency-analyzed to extract a half synchronous frequency component having a frequency equals to a half of the number of the revolutions of the engine per second and a synchronous frequency component having a frequency equals to the number of the revolutions of the engine per second, the electronic control unit (ECU) of the engine determines the misfiring mode of the engine including the number of the misfiring cylinders and the interval thereof in the firing order of the engine based on the amplitude of the frequency components and the waveform thereof, then the ECU determines the misfiring cylinders based on the determined misfiring mode and the phase angle of the frequency components of the torque sensor relative to a reference crank angle signal.
摘要翻译： 可以检测发动机的瞬时输出转矩的扭矩传感器设置在发动机的输出轴上，并对其输出信号进行频率分析，以提取频率等于该数量的一半的频率的半同步频率分量 发动机每秒的转速和频率等于发动机每秒转数的同步频率分量，发动机的电子控制单元（ECU）确定发动机的点火模式，包括失火次数 气缸及其间隔根据频率分量的振幅及其波形而发动机的点火顺序，则ECU根据确定的失火模式和扭矩传感器的频率分量的相位角来确定发动机气缸 相对于参考曲柄角信号。
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公开(公告)号：US5062062A
公开(公告)日：1991-10-29
申请号：US460235
申请日：1989-12-29
申请人： Yuji Nishibe , Yutaka Nonomura , Masaaki Abe , Masaharu Takeuchi , Kouji Tsukada
发明人： Yuji Nishibe , Yutaka Nonomura , Masaaki Abe , Masaharu Takeuchi , Kouji Tsukada
CPC分类号： G01L3/102 , G01D3/022 , G01D3/0365 , G01L3/105
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US4811609A
公开(公告)日：1989-03-14
申请号：US192621
申请日：1988-05-11
申请人： Yuji Nishibe , Yutaka Nonomura , Masaharu Takeuchi
发明人： Yuji Nishibe , Yutaka Nonomura , Masaharu Takeuchi
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US4803885A
公开(公告)日：1989-02-14
申请号：US39390
申请日：1987-04-17
IPC分类号： G01L3/10
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US5773728A
公开(公告)日：1998-06-30
申请号：US625528
申请日：1996-03-29
申请人： Kouji Tsukada , Takeshi Morikawa , Yutaka Nonomura , Sanae Tokumitsu , Masaharu Takeuchi , Kazuyoshi Kawaguchi
发明人： Kouji Tsukada , Takeshi Morikawa , Yutaka Nonomura , Sanae Tokumitsu , Masaharu Takeuchi , Kazuyoshi Kawaguchi
CPC分类号： G01L1/18
摘要： the present invention provides a force transducer having high compression fracture strength and high detection sensitivity, thus satisfying both detection precision and reliability, and also a method of fabricating such a force transducer. The force transducer is so constructed that a compression force is transferred via a pressure transfer block to narrow strain gages, which protrude from the surface of a silicon substrate and provide a small pressure-bearing area. Therefore, large compression strains act on the strain gages and thus the detection sensitivity is increased. When the compression force exceeds a predetermined value, the pressure transfer block comes into contact with the surface of the silicon crystal, thus improving the fracture strength of the strain gages. These narrow, protruding strain gages can be fabricated easily by a single mesa etching process.
摘要翻译： 本发明提供一种具有高压缩断裂强度和高检测灵敏度的力传感器，从而满足检测精度和可靠性，以及制造这种力传感器的方法。 力传感器被构造成通过压力传递块将压缩力传递到从硅衬底的表面突出的窄应变计，并提供小的承压面积。 因此，大的压缩应变作用在应变片上，因此检测灵敏度增加。 当压缩力超过预定值时，压力传递块与硅晶体的表面接触，从而提高应变计的断裂强度。 这些窄的，突出的应变计可以通过单个台面蚀刻工艺容易地制造。
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公开(公告)号：US4716773A
公开(公告)日：1988-01-05
申请号：US815252
申请日：1985-12-31
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US4589290A
公开(公告)日：1986-05-20
申请号：US684390
申请日：1984-12-20
申请人： Jun Sugiyama , Yutaka Nonomura , Kouji Tsukada , Keiichi Shimaoka , Masaharu Takeuchi , Takashi Takeuchi
发明人： Jun Sugiyama , Yutaka Nonomura , Kouji Tsukada , Keiichi Shimaoka , Masaharu Takeuchi , Takashi Takeuchi
IPC分类号： G01L3/10
摘要： A torque sensor for detecting variation in the drive torque of an automobile comprises an excitation coil wound on an excitation core and a detection coil wound on a detection core. The coils and cores are inserted into a chamber formed within a bearing for supporting a drive shaft and having an opening along the sliding surface of the bearing. The poles of the excitation core and the poles of the detection core are respectively disposed at prescribed clearances from the surface of the drive shaft in such manner that the poles of the detection core intersect the excitation core between its poles, whereby variation in drive torque is detected as magnetostriction.
摘要翻译： 用于检测汽车的驱动转矩变化的扭矩传感器包括缠绕在激励芯上的励磁线圈和卷绕在检测芯上的检测线圈。 线圈和芯线插入形成在轴承内的腔室中，用于支撑驱动轴并具有沿着轴承的滑动表面的开口。 励磁铁心和检测铁心的极分别以驱动轴的表面以规定的间隙设置，使得检测铁芯的磁极与励磁铁芯之间的极点相交，由此驱动转矩的变化是 被检测为磁致伸缩。
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公开(公告)号：US4697459A
公开(公告)日：1987-10-06
申请号：US903139
申请日：1986-09-03
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US4448059A
公开(公告)日：1984-05-15
申请号：US364679
申请日：1982-04-02
申请人： Haruyoshi Kondo , Masaharu Takeuchi
发明人： Haruyoshi Kondo , Masaharu Takeuchi
CPC分类号： G01L23/222 , G01H11/02 , G01P15/11
摘要： An improvement in an engine vibration sensor of the type including a vibrator set to resonate at a specific frequency of vibration of the engine to which it is attached, for example the engine knocking vibration frequency, wherein the vibration of the vibrator is converted to an electric signal representing the specific engine vibration. The improvement consists of forming the vibrator from a magnetic material and providing a magnetic field generator for applying a magnetic field of controlled intensity to the vibrator, whereby the resonant frequency of the vibrator can be adjusted by varying the intensity of the magnetic field.
摘要翻译： 这种类型的发动机振动传感器的改进包括设置成以其附接的发动机的特定振动频率共振的振动器，例如发动机爆震振动频率，其中振动器的振动被转换成电 代表特定发动机振动的信号。 该改进包括从磁性材料形成振动器并提供用于向振动器施加受控强度的磁场的磁场发生器，从而可以通过改变磁场的强度来调节振动器的谐振频率。
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