CAJ | 학술논문

光电编码器通常利用细分两路正交的码盘精码信号达到高分辨力的目的，为使细分技术更加完善，对基于三角波和基于正余弦波的两种细分方法进行了专题研究。分别对理想信号中存在直流误差、幅值误差、基波相位误差、高次谐波误差几种典型误差情况进行了分析，比较两种基于不同波形细分方法的抗干扰能力。实验对精码信号介于正余弦波和三角波之间的编码器进行测试，对于同一台编码器，采用正余弦波细分时精度为36″，采用三角波细分时精度为42″。结果表明：基于正余弦波的细分方法抗干扰能力优于基于三角波的细分方法。对于高精度光电编码器研制和生产时，可利用正余弦波对精码信号进行细分或将实际信号校正至标准正余弦波再细分。
광전편마기통상이용세분량로정교적마반정마신호체도고분변력적목적，위사세분기술경가완선，대기우삼각파화기우정여현파적량충세분방법진행료전제연구。분별대이상신호중존재직류오차、폭치오차、기파상위오차、고차해파오차궤충전형오차정황진행료분석，비교량충기우불동파형세분방법적항간우능력。실험대정마신호개우정여현파화삼각파지간적편마기진행측시，대우동일태편마기，채용정여현파세분시정도위36″，채용삼각파세분시정도위42″。결과표명：기우정여현파적세분방법항간우능력우우기우삼각파적세분방법。대우고정도광전편마기연제화생산시，가이용정여현파대정마신호진행세분혹장실제신호교정지표준정여현파재세분。
Interpolating two-channel orthogonal fine code signals is usually applied in the photoelectric encoders to get high resolving ability, and to better perfect the interpolation technique, special research was carried out on two interpolation methods which were based on triangular waveforms and sine-cosine waveforms. Analysis was implemented separately on ideal signals where several typical errors existed, including direct current drift, amplitude error, fundamental phase error and higher harmonic error, and anti-interference ability was compared between the two different waveform interpolation methods. The photoelectric encoder with fine code signal between sine-cosine waveform and triangular waveform was tested, and for the same encoder, the accuracy was 36″ when interpolated with sine-cosine waveforms, and 42″ with triangular waveforms. Results demonstrate that, the anti-interference ability of interpolation method based on sine-cosine waveforms is better than that based on triangular waveforms. When developing and manufacturing high-accuracy photoelectric encoders, it is suggested that sine-cosine waveforms should be used in the interpolation of fine code signal, or launch interpolation till the actual signal is calibrated to standard sine-cosine waveforms.