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EQEP 的索引(index)事件与锁存(strobe)事件

请问EQEP 的索引(index)事件与锁存(strobe)事件到底什么意思是,功能如何理解;还有位置计数器(QPOSCNT)如何工作计数的,谢谢

  • · eQEPI: Index or Zero Marker
    The eQEP encoder uses an index signal to assign an absolute start position from which position
    information is incrementally encoded using quadrature pulses. This pin is connected to the index
    output of the eQEP encoder to optionally reset the position counter for each revolution. This signal can
    be used to initialize or latch the position counter on the occurrence of a desired event on the index pin.
    · QEPS: Strobe Input
    This general-purpose strobe signal can initialize or latch the position counter on the occurrence of a
    desired event on the strobe pin. This signal is typically connected to a sensor or limit switch to notify
    that the motor has reached a defined position.

    QPOSCNT只要当A或者B出现电平变化都会累加,累加方向与转动方向一致

  • 谢谢您的答复。还继续请教一个问题,EQEP中编码器的1000线,为什么转一周会产生4000个脉冲,即4倍频,原理是什么?电机中的pole pairs(没翻错的话叫极对吧)是什么意思?