图形拟合法评估编码器细分误差  

Figure Fitting Method for Evaluating Interpolation Errors of Encoder

作　　者：刘春霞[1] 伊杰[1] 安利民[1] 

机构地区：[1]黑龙江大学物理科学与技术学院,哈尔滨150080

出　　处：《光电工程》2009年第4期13-16,共4页Opto-Electronic Engineering

基　　金：黑龙江省教育厅科学技术研究项目(11531456);黑龙江大学青年科学基金项目(QL200703)

摘　　要：提出了一种高精度编码器细分误差的快速评估方法——图形拟合法,建立了编码器光电信号的波形发生器,确立了曲线拟合优度的判据。运用图形拟合法,对实际采集的高精度编码器莫尔条纹光电信号进行分析,得到细分误差曲线。与传统检测方法得到的细分误差进行比较,结果表明:图形拟合法用于评估高精度编码器的细分误差,设备简便,检测方法简单;数据处理由评估分析软件实现,时间短,结果显示直观;可以用于工作现场检测,能够避开速度的影响,对于研究高精度编码器动态精度特性具有重要意义。The figure evaluation method is put forward which is the fast evaluation method of interpolation errors of the encoder with high precision. Wavy generator is formed on photoelectrical signal of the encoder. The criteria for judging the quality of a fitting curve is also established. High-precision encoder moire fringe photoelectrical signal is analyzed by using figures evaluation method, and the curve of interpolation errors is gotten. Compared with interpolation errors which are received from traditional detect method, the experimental result indicates： the figure fitting method can be applied to evaluate interpolation errors of high-precision encoder, the equipments is convenient and the examination method is efficient and feasible. Data processing can be realized by valuation analysis software in short time. The system can be used in the working field to avoid the influence of the speed, and has important meaning to the research of high-precision encoder＇s dynamic precision characteristics.

关 键 词：图形拟合 细分误差 优度判据 高精度 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]