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    • 8. 发明授权
    • Opto-electronic bachometer and position detector of an electric motor
    • 光电电位器和电动机的位置检测器
    • US5021735A
    • 1991-06-04
    • US463239
    • 1990-01-10
    • Jurgen MaassHelmut Meyer
    • Jurgen MaassHelmut Meyer
    • G01P3/46G01P3/486H02P6/17
    • G01P3/486G01P3/46H02P6/17
    • A device for determining the rotational speed and position of a rotor of an electric motor having at least one signal track arranged on the rotor includes at least one sensor located at a stator-side of the electric motor for scanning the signal track, and an evaluation circuit connected to the sensor, the sensor being sensitive to given stimuli of the signal track for alternatively adopting one of three different states which individually produce levels of different magnitude; the evaluation circuit including detectors responsive in accordance with the levels, for cutting off levels of given magnitude so that a recognition of the rotor position is derivable from a first and a second one of the three states, and the rotational speed is derivable from the third one of the three states.
    • 用于确定具有布置在转子上的至少一个信号轨道的电动机的转子的转速和位置的装置包括位于电动机的定子侧的至少一个传感器,用于扫描信号轨道,以及评估 连接到传感器的电路,传感器对给定的信号轨迹的刺激敏感,以交替地采用分别产生不同大小的三种不同状态之一; 所述评估电路包括响应于所述电平的检测器,用于切断给定大小的电平,使得所述转子位置的识别可从所述三种状态中的第一状态和第二状态导出,并且所述转速可从所述第三 三个州之一。