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From: guta on 5 May 2010 12:53
I want to tune a loop (temperature, flow, level, pressure). How can i generate an model from my experimental data to determine time constant, delay, process gain and after that to simulate and tune the pid controller. My data was gathered with pid controller in manual so I get the controller output(MV or CO), and process data (PV)
From: Arkadiy Turevskiy on 10 May 2010 11:23
You can use System identification Toolbox to get a model, see this demo:
http://www.mathworks.com/products/sysid/demos.html?file=/products/demos/sysid/processGUI_demo/sysid_process_GUI.html

Once you have a model, bring it into SISO Tool and tune PID gains as shown here:
http://www.mathworks.com/access/helpdesk/help/toolbox/control/quick/f2-1033890.html

(look for section called PID Tuning, and select the method Robust Response Time).

HTH.
Arkadiy

"guta " <hapciuu2003(a)yahoo.com> wrote in message <hrs7ph$j3f$1(a)fred.mathworks.com>...
> I want to tune a loop (temperature, flow, level, pressure). How can i generate an model from my experimental data to determine time constant, delay, process gain and after that to simulate and tune the pid controller. My data was gathered with pid controller in manual so I get the controller output(MV or CO), and process data (PV)
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