提高变磁阻转速传感器信号幅度的方法

Methods of Increasing Signal Amplitude of the Variable Reluctance Speed Sensors

分析了影响变磁阻转速传感器的输出信号幅度的因素,提出了提高输出信号幅度的方法。理论分析和实验表明:将圆盘上的圆孔改为矩形孔,或者在圆孔中放置永磁体可以显著提高变磁阻转速传感器的输出信号幅度,从而改善传感器测量低速物体时的性能,扩大这种传感器的转速测量范围。

Factors affecting the signal amplitude ignited by Variable Reluctance Speed Sensors （VRS） are analyzed. Methods of increasing VRS＇ signal amplitude are proposed and verified in experiments. These methods includes： machining a rectangular hole rather than a round hole in the disc, or fixing a permanent magnet in the round hole of the disc. These methods improve VRS＇ performance in measuring low-speed objects, thus enhance VRS＇ working range.