Hello Everyone,

I have been using SMath Studio for a while now and have recently created a simulation of a control loop consisting of a first order process with deadtime and a PID controller.

I have tried to recreate an example I found in an Excel spreadsheet here.

What I have done seems to work, but I am wondering if there would be a better way to achieve the same results.

Does anyone have any improvements they can suggest?

Thank you.

Gerry Bush

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PID_test.sm (50 KiB) downloaded 125 time(s).

Wrote

Hello Everyone,

Does anyone have any improvements they can suggest?

Thank you.

Gerry Bush

You might consider transforming your system to a first order ODE system and using the plugin ODESolvers, Examples

I used the Runge-Kutta solver for non-linear dynamics (simple example attached)

Don't know if it would be an improvement, at least it is an alternative.

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RK.sm (21 KiB) downloaded 118 time(s).

Hi mkraska,

Thank you for your reply and your example.

I think I will try what you suggest. I have not used the ODESolvers plugin before so it will be a chance to learn something else.

Best regards,

Gerry_Bush