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 <title><![CDATA[有没有哪位大师做过PLC控制多台变频器位置 ..]]></title>
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 <description><![CDATA[我做过.... [s:21] 不过是两个电机实现位置同步,,,,]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1484143#1665672.html]]></link>
 <author><![CDATA[kyy80]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 10 May 2015 16:11:46 +0000]]></pubdate>
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 <description><![CDATA[用PLC控制位置同步比较难，应该选用带同步卡的矢量闭环变频器，在电机上安装编码器，同步控制由变频器自己完成，这样精度比较高 [s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1484143#1665622.html]]></link>
 <author><![CDATA[回忆依然最美]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 10 May 2015 12:09:14 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[信号比例同步控制器没听过]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1484143#1665575.html]]></link>
 <author><![CDATA[ocz822]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 10 May 2015 07:42:42 +0000]]></pubdate>
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 <description><![CDATA[信号比例同步控制器&nbsp;&nbsp;淘宝一大把]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1484143#1663220.html]]></link>
 <author><![CDATA[路在何方]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 30 Apr 2015 15:35:31 +0000]]></pubdate>
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 <description><![CDATA[不准的 [s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1484143#1663212.html]]></link>
 <author><![CDATA[fffsjm]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 30 Apr 2015 14:59:59 +0000]]></pubdate>
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 <description><![CDATA[变频器？位置同步？能达到这个精度么？不是很理解]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1484143#1663187.html]]></link>
 <author><![CDATA[mecdqmecdq]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 30 Apr 2015 13:46:55 +0000]]></pubdate>
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