编码器（encoder）是将信号（如比特流）或数据进行编制、转换为可用以通讯、传输和存储的信号形式的设备。编码器把角位移或直线位移转换成电信号，前者称为码盘，后者称为码尺。按照读出方式编码器可以分为接触式和非接触式两种；按照工作原理编码器可分为增量式和绝对式两类。增量式编码器是将位移转换成周期性的电信号，再把这个电信号转变成计数脉冲，用脉冲的个数表示位移的大小。绝对式编码器的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。
主要分类
编码器可按以下方式来分类。
1、按码盘的刻孔方式不同分类
（1）增量型:就是每转过单位的角度就发出一个脉冲信号(也有发正余弦信号，然后对其进行细分，斩波出频率更高的脉冲)，通常为A相、B相、Z相输出，A相、B相为相互延迟1/4周期的脉冲输出，根据延迟关系可以区别正反转，而且通过取A相、B相的上升和下降沿可以进行2或4倍频；Z相为单圈脉冲，即每圈发出一个脉冲。
（2）绝对值型:就是对应一圈，每个基准的角度发出一个唯一与该角度对应二进制的数值，通过外部记圈器件可以进行多个位置的记录和测量。
【公司】: 福建鸿飞达自动化科技有限公司
【主营】: AB(罗克韦尔)PLC全系列、ABB机器人系统备件、施耐德140/TSX、西门子6SN/6FC、伺服系统全套等
【价格】: 电议
【发布人】: 程先生
【所在地】: 福建 - 福州
产品价格以电话或者QQ询价为准，发布价格不做参考，图片也一样
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