Looking for a reasonable looptime for my PID controler!!

Good morning!
I am trying to do a PID control of a combustionchamber. The setpoint and process value are the output temperature, the value to operate is the massstream of the fuel. My in- and output datas are refreshed every 50 ms. My problem is...
What is a reasonable looptime for my PID control?
Do you have any ideas???
thanks RT

My group has used the Sun Electronics PC-1000 Process Controller for some time, with good results. There are some instructions in the beginning of this Engineering Note (pdf link) that discribe how to iteratively determine the PID coefficients for a linear system. I'm not a mathematician, so I can't vouch for whole document, but their somewhat antiquated instruments DO work
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Message Edited by davidtheo on 21-Jan-2009 03:55 PM

Looking for a reasonable looptime for my PID controler!!

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