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    • 26. 发明授权
    • Position transmitter with at least one magnetoresistive sensor and associated magnetic multipole wheel
    • 具有至少一个磁阻传感器和相关磁性多极轮的位置传感器
    • US07061232B2
    • 2006-06-13
    • US10362113
    • 2001-08-21
    • Gunther HaasHenrik Siegle
    • Gunther HaasHenrik Siegle
    • G01B7/30
    • G01D5/145G01D5/2451
    • A position transmitter includes at least one magnetoresistive sensor and an associated magnetic multipole wheel having a large number of uniformly arranged pole pairs (2). The at least one sensor comprises first, second third, and fourth magnetoresistive resistors that are electrically connected as a Wheatstone bridge with four half bridges, with a voltage UO being fed in one bridge diagonal and a sinusoidal or cosinusoidal signal being produced on the other diagonal. A distance (d) between the first and second or third and fourth resistors located paral el to one another is selected with reference to a scanning direction of the multipole wheel, such that it is not equal the wavelength of a pole pair. A distance between the first and second resistors and between the third and fourth resistors is the same.
    • 位置传感器包括至少一个磁阻传感器和具有大量均匀排列的极对(2)的相关磁性多极轮。 所述至少一个传感器包括第一,第二第三和第四磁阻电阻器,其作为具有四个半桥的惠斯通电桥电连接,电压UO以一个桥对角线馈送,并且在另一对角线上产生正弦或余弦信号 。 参考多极轮的扫描方向,选择彼此相邻的第一和第二或第三和第四电阻器之间的距离(d),使得其不等于极对的波长。 第一和第二电阻器之间以及第三和第四电阻器之间的距离是相同的。