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中国科学院 长春光学精密机械与物理研究所,吉林 长春,中国,130033
[ "王显军 (1965-),男,吉林长春人,研究员,主要从事光电传感器、电子技术应用方面的研究。E-mail:yh8875@yahoo.com.cn" ]
收稿日期:2011-11-11,
修回日期:2011-12-06,
网络出版日期:2012-02-25,
纸质出版日期:2012-02-25
移动端阅览
王显军. 光电轴角编码器细分信号误差及精度分析[J]. 光学精密工程, 2012,20(2): 379-386
WANG Xian-jun. Errors and precision analysis of subdivision signals for photoelectric angle encoders[J]. Editorial Office of Optics and Precision Engineering, 2012,20(2): 379-386
王显军. 光电轴角编码器细分信号误差及精度分析[J]. 光学精密工程, 2012,20(2): 379-386 DOI: 10.3788/OPE.20122002.0379.
WANG Xian-jun. Errors and precision analysis of subdivision signals for photoelectric angle encoders[J]. Editorial Office of Optics and Precision Engineering, 2012,20(2): 379-386 DOI: 10.3788/OPE.20122002.0379.
高分辨力光电编码器通常利用码盘精码两路正交的正、余弦信号
通过细分达到高分辨力。为使细分技术更加完善
本文对细分误差进行了专题研究。分别对信号直流分量误差、幅值误差、相位误差、谐波分量误差、噪声误差和量化误差等进行了数理分析
通过对细分误差的特性分析
得出了误差规律及其计算公式
形成了比较完整的光电编码器细分误差及精度分析的数理结果。结果表明
一般情况下细分精度在1.5%左右。文章指出
利用码盘精码通过细分提高分辨力
应在码盘选择、轴系设计、信号提取、电路设计、工艺调试等各个环节充分考虑细分误差的影响。研究结果可用于在产品设计时
合理进行误差分析与分配
预估产品的精度
为减小设计误差提供参考。
High-resolution photoelectric encoder usually achieves a high resolution by the subdivision of two-way orthogonal sine and cosine signals from a fine disk code. In order to improve the subdivision technology
this paper researches the subdivision errors specially. The signal DC component errors
magnitude errors
phase errors
harmonic errors
noise errors and quantization errors are analyzed
respectively. Based on properties of subdivision errors
the laws of errors and their computing formulae are obtained
then
the fairly complete mathematical results of subdivision errors and precision analysis for photoelectric encoders are formed. The results show that the subdivision precision is about 1.5% generally. It points out that it should pay more attention to the effects of subdivision errors on different technological steps such as code selection
axis design
signal extraction
circuit design and adjusting method
when the subdivision is used to improve the encoder accuracy. The research results are useful for analyzing and distributing errors
forecasting product accuracy and reducing design errors in the product design.
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