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 <title><![CDATA[菜鸟求助：用s7 —200，cpu224闭环控制异 ..]]></title>
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 <description><![CDATA[Latest 50 replies of 菜鸟求助：用s7 —200，cpu224闭环控制异 ..]]></description>
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 <description><![CDATA[还有速度传感器的速度信号呢]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-105963#1047157.html]]></link>
 <author><![CDATA[俊采星星驰]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Fri, 20 May 2011 04:27:07 +0000]]></pubdate>
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 <description><![CDATA[物料流量产生的重力恒定是最终目标，用该目标去控制转速。现场信号为重力传感器传回的模拟信号。该程序可考虑使用PID控制。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-105963#1046720.html]]></link>
 <author><![CDATA[hxy990119]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Thu, 19 May 2011 13:38:56 +0000]]></pubdate>
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