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    • 116. 发明授权
    • Angular position detecting apparatus for linearly detecting angular position in a wider range
    • 角度位置检测装置,用于在更宽的范围内线性检测角位置
    • US06646435B1
    • 2003-11-11
    • US09614251
    • 2000-07-12
    • Tsutomu NakamuraToshihisa IshiharaTakashi Hamaoka
    • Tsutomu NakamuraToshihisa IshiharaTakashi Hamaoka
    • G01B730
    • G01D5/145F02D11/106G01B7/003G01B7/30
    • An angular position detecting apparatus using a magnetic detecting element, which can voluntary widely set an output change characteristic of the magnetic detecting element with respect to angular positions. An angular position detecting apparatus includes a cylindrical yoke, and a magnet fixed to a predetermined position in the cylindrical yoke. A magnetic detecting element, which is fixed to a rotor, is provided in a magnetic field generated between the magnet and the cylindrical yoke, so that a position of the magnetic detecting element is shifted from a rotation axis P of the rotor by a predetermined distance r. A ferromagnetic thin film magnetic resistance element applies a magnetic field which has intensity so that outputs from the elements are saturated. As a result, the magnetic detecting element generates outputs depending only on a magnetic flux detection angle &thgr;s independent of an influence of changes of magnetic field intensity due to temperature changes. In this case, when at least one of a rotation radius r of the magnetic detecting element and a radius R of the cylindrical yoke is voluntary determined, an output change characteristic of the magnetic detecting element can be voluntary set.
    • 一种使用磁检测元件的角位置检测装置,其可以自愿地广泛地设置磁性检测元件相对于角位置的输出变化特性。 角位置检测装置包括圆柱形磁轭和固定到圆柱形磁轭中的预定位置的磁体。 固定在转子上的磁性检测元件设置在磁铁和圆筒形轭铁之间产生的磁场中,使得磁性检测元件的位置从转子的旋转轴线P偏移预定距离 r。 铁磁性薄膜磁阻元件施加具有强度使得元件的输出饱和的磁场。 结果,磁检测元件仅根据磁通量检测角产生不依赖于温度变化引起的磁场强度变化的影响的输出。 在这种情况下,当自动确定磁检测元件的旋转半径r和圆柱形轭的半径R中的至少一个时,可以自愿设定磁检测元件的输出变化特性。