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SDCS-PIN-51COAT
1746-HSC
MVI56-MNETR
10A6131NB1B
CP451-50
VI702DCS3000
F650BFBF1G0HICE
MVI69-AFC
YT204001-JF-YXU167G

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描述

参数PER_TM和CYCLE_P只是决定了脉宽调制精度G,G=PER_TM/CYCLE_P。脉宽调制精度,决定了一个脉冲周期内执行的脉冲计算的次数,次数越多精度越高。如图4,FB58“TCONT_CP”通过“SELECT”参数决定PID运算和脉冲运算的关系,通常我们使用默认的模式,也就是同一个FB58“TCONT_CP”执行两者,因此在同一个循环中断中执行的FB58“TCONT_CP”,每次循环中断进入都会执行脉冲运算,而PID运算和脉冲运算成1:G关系。因此实际脉冲运算的周期CYCLE_P*是由程序块执行的间隔决定的,所以实际周期PER_TM*=CYCLE_P*xG。

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