Steady state?

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dimitris
dimitris 2011-11-16
I am building a circuit with simulink and i was wondering if the results i take are in steady state. Are the elements in simulink considered to have only steady state response or transient state takes place?

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Fangjun Jiang
Fangjun Jiang 2011-11-16
Typically, the results of a simulation represent the transient or dynamic response of the model under the stimulus of inputs and initial conditions. If the system is stable, you can run the simulation long enough to get a close approximation of the steady-state.
The function trim() can be used to find the steady state of a model. However, I never tried it on a model with SimElectronics components.
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dimitris
dimitris 2011-11-16
My simulation has to run for some milliseconds, thus i can afford running the system for long time unless i know exactly how much is "long enough". Is this possible ?
Fangjun Jiang
Fangjun Jiang 2011-11-16
Yes, it's relative. You can run your simulation to see if the results go towards an equilibrium. However, that won't guarantee to be the steady state. Use a known input/output result to test it out. Try the trim() function. It's a better approach if it can be applied to SimElectronics.

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