Using the gratingdisplacementtransducer for measuring end circular run-out error during the pellet rotation course droved by a rotation stage, the system realized the pellet automatic detection.
The principle of pulse fine division in measurement of displacement by using grating scale (so called Grating line displacementtransducer) with right-angled sinewave is discussed.
讨论了输出正交正弦波的光栅尺（又称光栅线位移传感器）在位移测量中的脉冲细分原理。
3
A transducer for lateral remote displacement measurement based on grating laser Doppler effect is introduced.