【简答题】
简述TFX1型电子防滑器速度传感器部分的组成及作用。
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答案
它是一个速度脉冲信号发生器，由速度传感器及感应齿轮组成（1分）。感应齿轮安装于车轴端
部，传感器安装于轴箱盖上（1分）。这是一种非接触式的传感器，当车轮转动时，它产生的频率正比于运行
速度的电脉冲信号（2分）。TFX1型防滑器中采用了永磁式磁电传感器，感应齿轮与轴承压盖做成一体，齿轮
共有90个齿，即车轮每转一圈产生90个脉冲信号（2分）。传感器径向安装在特制的轴箱盖上，其端部与齿轮
顶部保持1mm左右的间隙（2分）。当齿轮旋转时，齿顶齿谷交替通过传感器，切割磁力线，即在传感器输出线
圈上感应出相应的脉冲信号（2分）。
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