一种新型的钢带尺线性位置测量的编码方法

An Absolute Encoding Technology for Linear Displacement

对于用于线性位置测量的钢带尺,传统的m序列编码和解码方案虽然适用于长量程测量,但存在着查找表占用内存过大的问题。为解决该问题,提出了基于特征码匹配的m序列编码和解码方案,探究了设计m序列所需的初始编码状态和反馈系数以及特征码的选取对于非特征编码解码过程中的最长计算次数的影响,进而提出了基于实际应用场景的设计方案,选择最优的m序列和特征码可在保证解码时效性的同时使内存降到最小。最后实验验证了提出方案的有效性。

For steel tape rulers used for linear displacement measurement,although traditional m-sequence encoding and decoding schemes are suitable for long-distance measurement,there is a problem of excessive memory consumption of lookup tables.To address this issue,an m-sequence encoding and decoding scheme based on feature code matching was proposed.The influence of the initial coding state and feedback coefficient required for designing m-sequences,as well as feature code selection on the longest computation times in decoding processes of non feature code were investigated.Furthermore,a design scheme based on practical application scenarios was proposed,where selecting the optimal m-sequence and feature code can ensure decoding efficiency while minimizing memory.Finally,the effectiveness of the proposed scheme was verified through experiments.