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From: Pablo on 20 Jun 2010 17:34
Hello, I'm trying to set Kp and Ki constants of the PI controller inside the demo model, at help menu of matlab:
6 kW 45 Vdc Fuel Cell Stack
power_fuel_cell.mdl

I put the new PID block that has the auto tuning function instead of the used at the demo.
And I removed the loop that controls the fuel for fuel cell.

And the auto tune gives me: kp=0.0064 ki=0.0001 that don´t works correctly

instead the correct original values of the demo Kp=0.005 ki=0.15 that works properly.

Why this happens? how have to do to run properly the auto-tune?

Thanks
Regards.
From: Arkadiy Turevskiy on 2 Jul 2010 17:49
Hi Pablo,
Can you send me the model with the new PID block. I'll try to figure out why tuner is not working as expected for you.
Thanks.
Arkadiy


"Pablo " <mrpablo(a)hotmail.com> wrote in message <hvm1gc$f7l$1(a)fred.mathworks.com>...
> Hello, I'm trying to set Kp and Ki constants of the PI controller inside the demo model, at help menu of matlab:
> 6 kW 45 Vdc Fuel Cell Stack
> power_fuel_cell.mdl
>
> I put the new PID block that has the auto tuning function instead of the used at the demo.
> And I removed the loop that controls the fuel for fuel cell.
>
> And the auto tune gives me: kp=0.0064 ki=0.0001 that don´t works correctly
>
> instead the correct original values of the demo Kp=0.005 ki=0.15 that works properly.
>
> Why this happens? how have to do to run properly the auto-tune?
>
> Thanks
> Regards.
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