范文编号:ZD533 范文字数:32192,页数:68,有开题报告,任务书,文献综述 关键词: 三相半控整流桥;数字式;触发器;晶闸管;PID控制算法 Abstract: A kind of high power SCR digital trigger circuit system was recommended. To satisfy the request of heavy-current in the SCR trigger.This paper describe a method of microcomputer controlling for three—phase semi- controlled bridge rectifier.The microcomputer direct control P89LV51RD2BN chip to realize the phase shifting of thyirstor trigger pulses.Synchronizing signals are digitized, so that three phase of the trigger pulses are symmetrized accurately.The software uses PID arithmetic to realize output current precise controlled .The table inquirying method is adopted in the programe to seek initial count data 目 录
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