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AA039
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Join Date: Apr 2012
Posts: 37

Proportional Derivative Controller

05/12/2013 9:21 AM

Dear All

we are using pi controller on most of acs800 vfd. I want to ask that can we use pd control on these drives too
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Tornado
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Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
Posts: 21017
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#1

Re: Proportional Derivative Controller

05/12/2013 10:14 AM

Yes.

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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
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#2

Re: Proportional Derivative Controller

05/12/2013 4:45 PM

It would be a very strangely-behaving process that used P+D only. So, although it is possible, it is very unlikely to be needed andd therefore very uncommon.

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leveles
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Join Date: Jan 2008
Posts: 1753
Good Answers: 59
#3

Re: Proportional Derivative Controller

05/15/2013 9:50 AM

The general form of the controller is PID, and was for the better part of the century. As antique as a piston engine. and equally, it has its place, usefully.

I get annoyed - when a manufacturer, normally - start monkeying with it. Believing his uneducated mind, that he can save 50 cents leaving a factor out.

Penny wise, pound foolish.

Other than that, I have no firm opinion on the matter.
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