【Key words】 slip energy recovery induction motor driving systems； power factor； Single-Chip microcomputer； numerical trigger； simulation；
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数字触发器算法 digital trigger algorithm
To aim at the defect of the simulate trigger and the digital trigger with microcomputer,a new universal digital trigger based on CPLD and PLL is introduced.
针对模拟触发器和基于微机控制的数字触发器存在的不足。
参考来源 - 带CPLD新型通用数字触发器的设计Data sampling and control algorithm realizing are completedin the upper level unit, and the digital trigger is built in the lower level unit.
其上层单元主要用来完成数据采样、滤波及控制算法的实现；下层单元主要为单片机实现的数字触发器。
参考来源 - 计算机控制直流调速系统设计与实现·2,447,543篇论文数据，部分数据来源于NoteExpress
由微机及接口构成数字触发器。
A digital trigger is formed by microcomputer and its interfacing circuits.
介绍了数字式直流调速器的结构、功能及晶闸管数字触发器的实现。
The structure and functions of a digital DC motor speed governor and the realization of thyristor digital trigger are described.
控制算法的运算，正反组晶闸管切换逻辑及高性能的数字触发器均由单片机实现。
The calculation of control algorithm, logic control of positive and reverse group thyristor and advanced digital trigger are accomplished by the single chip computer.
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