差相式圆分度位移传感器

Study on the Difference Phase Degree Division Displacement Transducer

在指出传统栅纹式位移传感器不足的同时 ,提出了将角位移的直接测量转化为两同频差相信号相位差测量 ,从而间接获得待测角位移的差相式圆分度位移传感器的设计思想。还提出了基于差相信号采用滤波提取和简单数学运算获取信号相位差从而得到待测角位移的“相位差算式位移传感器” ,以及通过差相信号的相关运算获取信号相位差从而得到待测角位移的“相关式位移传感器”的设计原理。差相式圆分度位移传感器 ,有效地利用了计算机和信号处理技术 ,适应当今仪器的虚拟化和智能化的发展趋势 。

Pointing out the shortages of the traditional bar thread displacement transducer, brings forward new thought of designing difference phase degree division displacement transducer, which transforms the problem of measuring displacement directly in angle into the problem of measuring the difference between the phases of two signals which have the same frequency and then gets the displacement in angle indirectly. The theories on designing the phase difference calculation displacement transducer and correlation displacement transducer is suggested. Because the difference phase degree division displacement transducer, supported by the computer technology and the signal processing technology, adapts to the development of instrument's fictionzing and intelligentizings, it is an advanced technology.