小型光电编码器细分误差补偿法

提出了一种基于图形拟合的小型光电编码器细分误差补偿的新方法。首先,采用分段函数法建立莫尔条纹三角波光电信号波形方程;然后,采用回归分析理论、可决系数方法,研究了所建三角波图形与实际光电信号图形的拟合程度,建立了莫尔条纹三角波图形拟合优度检验方法;最后,建立了细分误差补偿数学模型,给出了新的莫尔条纹细分计算公式,实现对细分误差的综合补偿。运用本方法对16位小型光电编码器进行细分误差补偿处理,经实际测试细分误差峰峰值由79＂减小到27.5＂。实际结果表明：研究的细分误差补偿方法,可提高光电编码器的细分精度,对于研制小型高精度光电编码器具有重要意义。

Interpolation error compensation of the minitype photoelectrical encoder

The new method for interpolation error compensation of the minitype photoelectrical encoder based on figure fitting is presented.Firstly,the triangular wave photoelectric signal equation of moire fringe is established with the subsection function;secondly,the fitting level is researched between the triangular wave graph and the practical photo-electrical signal graph with the regression analysis and coefficient of determination,and the fitting merit test method of the triangular wave graph is put forward;fi...