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7344/7334硬件使用手册描述如下:
"The encoder input channel converts quadrature signals on Phase A and Phase B into 32-bit up/down counter values. Quadrature signals are generated by optical, magnetic, laser, or electronic devices that provide two signals, Phase A and Phase B, that are 90° out of phase."
然而,如果相位A和相位B相差不是严格的90°,那么,可接受的相位差值范围是多少?
最基本的原则是,两个编码器信号,相位A和相位B,的时间差必须大于或等于编码器滤波器频率的倒数。编码器滤波器的频率可以在MAX中Encoder Settings页中设置。设置窗口如下所示。默认的滤波器频率是1.6MHz。
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