过零检查
As for the part of software, Current and voltage zero cross detection circuit, synchronism signal detection circuit, Current and voltage detection circuit and CAN bus interface circuit and so on are designed.
硬件部分主要对电流电压检测电路,同步信号检测电路,电流电压过零检测电路,CAN总线接口电路等进行了设计。
This paper describes a software filtering method for eliminating industrial frequency interference in ordinary industrial process control with the aid of zero cross detection circuits. A detailed account of the filtering theory and its application is also given.
本文介绍了一种在一般工业过程控制中借助于过零检测电路来实现滤除工频干扰的软件滤波方法,阐述了其滤波原理与应用。
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