基于伺服比较式位移传感器的自身的特点，和另外附加的一套用于确定周期位置的装置，实现了大量程的绝对位移测量。
Based on the characteristics of the servo-comparison method and an additional apparatus for deciding the certain periods, an absolute displacement sensor with a wide measuring range is realized.
良好的算法和传感器器件——绝对位移编码器的正确选取，对参数测量精确度的提高起到了极为重要作用。
The reasonable arithmetic and right choice of absolute displacement coder is of great importance in the improvment of system precision.
采用PLC的高速计数器进行测量轮正转和反转时的脉冲信号的采集，通过进一步程序运算得到绝对位移量。
The pluses comes from coder to send to the high speed counter, and the number of the high speed counter is operated in the program of PLC to get the absolute displacement anticipated.
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