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    • 3. 发明授权
    • Rotational angle output regulating method
    • 旋转角输出调节方式
    • US06845649B2
    • 2005-01-25
    • US10163870
    • 2002-06-07
    • Takamitsu KubotaNaoyuki KamiyaHirofumi HagioTakashi Hamaoka
    • Takamitsu KubotaNaoyuki KamiyaHirofumi HagioTakashi Hamaoka
    • G01D18/00G01C17/38
    • G01D18/008
    • A method for calibrating a rotation angle sensor having a magnet, a magnetic detector disposed in a magnetic field of the magnet for outputting a detected value indicative of a direction of the magnetic field that varies in accordance with a rotation angle of a rotatable member, and an output circuit which transforms the detected value to an output value in accordance with a transforming characteristic and outputs the output value, the method entailing: assembling the magnet, the magnetic detector and the output circuit to a device that has the rotatable member; rotating the rotatable member to a predetermined reference angle; measuring the detected value or the output value as a measured value when the rotatable member is at the reference angle; and setting the transforming characteristic based on the measured value so that the output circuit outputs a reference output value at the reference angle.
    • 一种用于校准具有磁体的旋转角传感器的方法,设置在磁体的磁场中的磁检测器,用于输出表示根据可旋转部件的旋转角度而变化的磁场方向的检测值,以及 输出电路,其根据变换特性将检测值变换为输出值,并输出所述输出值,所述方法包括:将所述磁体,所述磁检测器和所述输出电路组装到具有所述可旋转部件的装置; 将所述可旋转构件旋转到预定的参考角度; 当所述可旋转构件处于所述基准角度时,将所述检测值或所述输出值作为测量值进行测量; 并且基于测量值设置变换特性,使得输出电路以参考角度输出参考输出值。
    • 8. 发明授权
    • Angular position detection apparatus
    • 角位置检测装置
    • US06483296B1
    • 2002-11-19
    • US09589772
    • 2000-06-09
    • Takashi HamaokaTakamitsu KubotaKunio NanbaAkira ShimazuKunio Tanaka
    • Takashi HamaokaTakamitsu KubotaKunio NanbaAkira ShimazuKunio Tanaka
    • G01B730
    • G01D5/145F02D11/106
    • An angular position detection apparatus, which can improve a detection accuracy of the angular position by improving a linearity of an output characteristic with respect to an angular position detection apparatus, and to downsize an outer size thereof. A permanent magnet is fixed to a side surface of a rotor core, which integrally rotates with a detection target object. An inner surface of a cylindrical portion of the rotor core is closely confronted with an outer surface of a stator core. Thus, the angular position detection apparatus is formed as a radial gap type in which magnetic flux is gone through an air gap G1 between the cylindrical portion and the stator core along a radial direction. A magnetic flux detection gap portion is formed at a center portion of the stator core so as to go through toward a diametral direction. A Hall IC is arranged in the magnetic flux detection gap portion. The permanent magnet is magnetized so that lines of magnetic force therein are parallel with each other. As a result, it can expand the range, in which the magnetic flux density in the magnetic flux detection gap portion linearly changes in proportion to the angular position of the rotor core, and it can improve the linearity of output characteristic of the Hall IC with respect to the angular position.
    • 一种角位置检测装置,其能够通过提高相对于角位置检测装置的输出特性的线性度来提高角位置的检测精度,并且能够缩小其外形尺寸。 永久磁铁固定在与检测对象物一体旋转的转子铁芯的侧面上。 转子芯的圆筒部分的内表面与定子芯的外表面紧密地相对。 因此,角位置检测装置形成为径向间隙型,其中磁通沿径向方向通过圆筒部和定子芯之间的气隙G1。 磁通检测用间隙部形成在定子铁芯的中心部,从而朝向直径方向通过。 霍尔IC布置在磁通检测间隙部分中。 永磁体被磁化,使得其中的磁力线彼此平行。 结果,能够扩大磁通检测用间隙部的磁通密度与转子芯的角度位置成比例地变化的范围,能够提高霍尔IC的输出特性的线性 相对于角位置。
    • 10. 发明授权
    • Rotational angle detector using linear converter
    • 旋转角度检测器采用线性转换器
    • US06498479B1
    • 2002-12-24
    • US09666562
    • 2000-09-21
    • Takashi HamaokaTakamitsu Kubota
    • Takashi HamaokaTakamitsu Kubota
    • G01B730
    • G01D5/145G01B7/30
    • The rotational angle of a rotatable object (such as the throttle valve of an automobile engine) is accurately detected by a rotational angle detector having a magnetic sensor placed in a magnetic field, the direction of which varies according to the rotational angle. The magnetic sensor generates an output that varies sinusoidally according to rotational angle. The sinusoidal output is converted into a signal that is proportional to the rotational angle under arc-sine or arc-cosine transformation. The converted signal correctly represents the rotational angle in a wide angle range. The sensor element and the circuit for converting the sensor output into the proportional output signal may be built in a single-chip integrated circuit to simplify detector structure.
    • 可旋转物体(例如汽车发动机的节气门)的旋转角度由具有放置在磁场中的磁传感器的旋转角度检测器精确地检测出,其方向根据旋转角度而变化。 磁传感器产生根据旋转角正弦变化的输出。 正弦输出转换成与正弦波或反余弦变换下的旋转角成正比的信号。 转换的信号正确地表示广角范围内的旋转角度。 传感器元件和用于将传感器输出转换成比例输出信号的电路可以内置在单芯片集成电路中以简化检测器结构。