Bode diagram at different amplitudes?
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grub
am 21 Mai 2014
Beantwortet: Arkadiy Turevskiy
am 21 Mai 2014
Hello,
my system is non-linear (basically a 2nd order lag with a saturation, modeled in simulink). I need to generate bode plots while the system is excited by sine waves of different amplitudes (so amp1 -> bode1, amp2 -> bode2). I want to compare this plot with real life data.
What would be the best way to generate these plots in Matlab/simulink? I am aware of the bode-Block in simulink, but I can't figure out a way to introduce the amplitude parameter.
Regards, grub
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Yao Li
am 21 Mai 2014
Option 1: export the input and output data to workspace and plot the bode diagram Option 2: Set the input/output port in simulink. Open Tools->Control Design->Linear Analysis. There is an option for plotting bode diagram
I think even a non-linear system can be analyzed in this toolbox.
Anyway, there are many other options. i.e. system identification toolbox
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