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PID temperature control model

Posted Jul 11, 2012, 7:32 a.m. EDT Heat Transfer & Phase Change Version 4.3 1 Reply

Nitesh Rawat
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Hi,

I was trying to integrate PID system to my joule heating model. I need to control the temperature at the middle by controlling the inlet current across the terminals. I somehow succeeded in finding the solution. But the problem is idk how much current I am putting into the model??

as I introduced the current as:
I= nojac(k_p*(T_mp(t)-T_set) + k_int*Int(t)+ k_der* Tt_mp(t))

The temperature distribution also depends on the values i input for
K_proportional, K_integral and K_derivative (the essence of PID)

I am attaching the model. I would be thankful to you if you look at the model and can help me out.

Thanks in advance.

Regards,
Nitesh

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1 Reply Last Post Jul 11, 2012, 8:04 a.m. EDT
Nitesh Rawat
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Posted: 1 decade ago Jul 11, 2012, 8:04 a.m. EDT
And temp is changing as I am changing the values of k_prop which is obvious since current value depend on it.

I want to apply a current of 3000 amps across the terminal? how can this be possible if I am using the above equation????

Please help!

Thanks in advance :)
And temp is changing as I am changing the values of k_prop which is obvious since current value depend on it. I want to apply a current of 3000 amps across the terminal? how can this be possible if I am using the above equation???? Please help! Thanks in advance :)

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