Home " Tag " 绝对值编码器电压

Method of eliminating absolute encoder voltage variations in circuits

2021-02-18

消除绝对值编码器电压变化，该设计预计会产生的问题将会是产生偏差：3%的误差可能导致电压在3V至4.5V之间变化。增量型编码器每一个位置对应一个确定的数字码，因此它的示值只与测量的起始和终止位置有关，而与测量的中间过程无关。可进行基本计算。数字绝对值编码器是50kΩ (25%容差)，R1为16.5K ，R2为100K 。绝对值编码器端到端电阻25%的容差是设计中的最大误差源。 　　现在考虑用不同的抽头电阻进行相同计算，如果绝对值编码器是37.5k&Omega；顶端电压为4.46V，低端为3.25V;如果绝对值编码器为62.5k&Omega；则顶端电压为4.54V，低端电压为2.7...

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