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Anonymous Poster

proportional,reset explanation

08/26/2008 7:03 PM

Could someone please explain proportional and reset? I've pulled it up on google and look at the information but would like to have it explain from someone in this forum. Thank you very much.
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Mikerho
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#1

Re: proportional,reset explanation

08/26/2008 11:20 PM

Dear Guest,

The information that you give with your request is not very informative.

Are you talking about process control? In a PID control scheme, the P stands for Proportional, the I stands for Integral (also referred to as RESET), and the D stands for Derivative.

Is this what you are referring to?

Mike

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PWSlack
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#2

Re: proportional,reset explanation

08/27/2008 3:39 AM

Look for 3-term control in the better on-line encyclopediae, or speak to a mentor in control & instrumentation locally. In the simplest of terms:

  • Proportional action is, literally, an output that is proportional to the error signal
  • Reset action is related to the integral of the error over time, divided by the integral time setting.

where the error signal is the setpoint minus the measured value.

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Sparkstation
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#3

Re: proportional,reset explanation

08/27/2008 4:15 AM

Hello "Guest",

Rather than laboriously typing out an answer for you, or Copy/Pasting one, I suggest that you refer: http://en.wikipedia.org/wiki/PID_controller

Please read that article, along with the associated weblinks, and you shall improve your knowledge base, regarding proportional and reset.

Kind Regards....

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