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 <title><![CDATA[用PLC控制水管中水流量的大小用什么阀]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-98227.html]]></link>
 <description><![CDATA[Latest 50 replies of 用PLC控制水管中水流量的大小用什么阀]]></description>
 <copyright><![CDATA[Copyright(C) 工控人家园]]></copyright>
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 <title><![CDATA[]]></title>
 <description><![CDATA[电液比例阀]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-98227#988625.html]]></link>
 <author><![CDATA[coverpaper]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 11 Mar 2011 01:36:40 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[PID控制是连续的，适应各种参数的控制，阀的开度可在0%~100%内变化，难道满足不了楼主的要求？]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-98227#988269.html]]></link>
 <author><![CDATA[ysheng9099]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 10 Mar 2011 12:20:46 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[气动调压阀&nbsp;&nbsp; 比例阀]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-98227#988050.html]]></link>
 <author><![CDATA[李勇liyong]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 10 Mar 2011 04:46:31 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[楼主，PID控制只会控制水的开或关？开玩笑吧？只控制水的开关还需要用PID？直接用一个气动球阀或电磁阀足矣！你这个想要控制精确的话必须用流量计实时检测水的流量，反馈给PLC，用PID控制电液比例阀。要是你的水源压力恒定的话直接用一个手动阀控制也可以啊，还用搞得这么复杂！]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-98227#988022.html]]></link>
 <author><![CDATA[回忆依然最美]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 10 Mar 2011 03:32:20 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[气动调节阀也可以]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-98227#988016.html]]></link>
 <author><![CDATA[tlw2007]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 10 Mar 2011 03:25:44 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[控制流量的没做过，做过控制温度的，将温度实时温度反馈给PLC，用PLC PID控制电气比例阀的输出气压大小，电气比例阀来控制气动薄膜调节阀来控制蒸汽进气量的大小，从而达到恒温控制！你这个貌似也应该按这思路来做。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-98227#987931.html]]></link>
 <author><![CDATA[回忆依然最美]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 10 Mar 2011 01:50:00 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[应该是吧]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-98227#987680.html]]></link>
 <author><![CDATA[lingtianhong]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 09 Mar 2011 12:40:07 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[压力阀]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-98227#987677.html]]></link>
 <author><![CDATA[lingtianhong]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 09 Mar 2011 12:38:31 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[怎么个控制法,开环还是闭环呢,开环就用比例阀,闭环就用PID控制好了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-98227#987626.html]]></link>
 <author><![CDATA[xiaolianglxk]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 09 Mar 2011 12:05:00 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[精确控制的话用PID控制，只要是能连续动作的阀都可以]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-98227#987595.html]]></link>
 <author><![CDATA[ysheng9099]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 09 Mar 2011 11:37:44 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[比例阀]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-98227#987434.html]]></link>
 <author><![CDATA[machao2300]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 09 Mar 2011 07:15:46 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[比例阀]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-98227#987401.html]]></link>
 <author><![CDATA[hxl202319]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 09 Mar 2011 06:21:21 +0000]]></pubdate>
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