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 <title><![CDATA[用PWM控制比例阀]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-98986.html]]></link>
 <description><![CDATA[Latest 50 replies of 用PWM控制比例阀]]></description>
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 <description><![CDATA[可以在输出加滤波电路，具体见编程手册231页。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-98986#995443.html]]></link>
 <author><![CDATA[givemepower]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sun, 20 Mar 2011 02:23:26 +0000]]></pubdate>
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 <description><![CDATA[就是，我用的SMCITV2050电气比例阀，是模拟量电压（DC0-10V）控制的，不知道楼主用的是哪种的。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-98986#993556.html]]></link>
 <author><![CDATA[xiaoyousheng]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Thu, 17 Mar 2011 12:04:27 +0000]]></pubdate>
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 <description><![CDATA[晕死！从来没听说过用脉冲控制比例阀的，一般都是用模拟量电流或者电压信号来控制比例阀！楼主用脉冲宽度来控制可控硅或者固体继电器吧？]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-98986#992934.html]]></link>
 <author><![CDATA[回忆依然最美]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Wed, 16 Mar 2011 12:59:56 +0000]]></pubdate>
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