Stop Simulink simulation when reached an oscillating steady state amplitude

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Alberto Mora
Alberto Mora 2017-11-22
评论： Alberto Mora 2020-5-27
Hello,
I would like stop a Simulink simulation if a signal reach the steady state in terms of amplitude of oscillations: at the start of the simulation the signal have got a generic transitory, but after some time the system reach the equilibrium and so the system reach steady state like approximativelly a sin(x) function with a constant amplitude.
I would like to compare the heigth relative difference between two near peaks and compare it by a threshold percentage, but I don't know how to do it. If someone have other ideas, please tell me.
Obviously this example is not usefull in this case, because I want to find a steady state of an oscillating system, and NOT a steady state of a signal that reach a target value.
To understand better what I mean, you can see two dinstinct examples (what I want to get is stop the simulation at green line time since signals are are dynamic steady state).

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回答（1 个）

Fangjun Jiang
Fangjun Jiang 2020-5-27
If you have this toolbox and can use this block, maybe you can look at the rate of change of the magnitude.
Sinusoidal Measurement (PLL)

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