CAJ | 학술논문

为了实现在不增加体积和重量的前提下提高小型光电编码器分辨力和细分精度，对光电编码器高分辨力细分技术进行了研究。首先，分析了影响小型光电编码器分辨力及细分精度的主要因素；其次，利用ADμC841单片机对A/D转换的增益误差和失调误差进行修正；最后，优化电子学细分算法，设计出小型光电编码器高分辨力的信号处理电路。实验结果表明，该设计可以实现编码器精码信号的1024细分，细分周期误差的峰峰值由163义减小到70义；将外径为40 mm的小型光电编码器分辨力提高4倍至4.98义，精度提高至<30义。设计的编码器细分方法，电路结构简单、细分数高，可应用于对体积和重量有严格要求的绝对式和增量式光电编码器中。
위료실현재불증가체적화중량적전제하제고소형광전편마기분변력화세분정도，대광전편마기고분변력세분기술진행료연구。수선，분석료영향소형광전편마기분변력급세분정도적주요인소；기차，이용ADμC841단편궤대A/D전환적증익오차화실조오차진행수정；최후，우화전자학세분산법，설계출소형광전편마기고분변력적신호처리전로。실험결과표명，해설계가이실현편마기정마신호적1024세분，세분주기오차적봉봉치유163의감소도70의；장외경위40 mm적소형광전편마기분변력제고4배지4.98의，정도제고지<30의。설계적편마기세분방법，전로결구간단、세분수고，가응용우대체적화중량유엄격요구적절대식화증량식광전편마기중。
In order to improve the resolution and interpolation precision of the small photoelectric encoder without increment of size and weight, some research has been carried out on the high-resolution interpolation method. Firstly, main factors which affected the resolution and interpolation precision of the small photoelectric encoder were analyzed, and then the analog-to-digital conversion gain error and imbalance error were calibrated by microcontroller of ADuC841. Finally, the electronic interpolation algorithm was optimized, and a small photoelectric encoder signal processing circuit with high interpolation precision was designed. Experimental results showed that precise code signal interpolation of 1 024 parts of the encoder could be realized with this design, and peak-to-peak value of the interpolation cycle error could be reduced from 163” to 70”. The resolution of the small photoelectric encoder with an exterior diameter of 40 mm could be improved by 4 times up to 4.98”, and its precision could be improved to <30”. The method improves the resolution and interpolation precision of the encoder.Because of its simple circuit st ructure and high resolution interpolation the method could be applied to absolute and incremental photoelectric encoders with the limitation of size and weight.