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Frequency response

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Roberto Gomez
Roberto Gomez on 16 Feb 2011
Edited: John Kelly on 27 Feb 2015
Hello,
i have designed a simple filter with a operational (a buffer). I have used Simscape (simulink). Now i want to know the response in frequecy (Bode diagrams) of this, my problem is that i do not know how to get diagrams.
Thanks.

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Vieniava
Vieniava on 16 Feb 2011
paste code with your filter design, please

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Accepted Answer

Arnaud Miege
Arnaud Miege on 28 Feb 2011
Edited: John Kelly on 27 Feb 2015
Yes, it is possible. You need to linearize the model around an operating point to obtain a state-space representation, from which you can generate a Bode plot. Have a look at the SimElectronics demo entitled Small-Signal Frequency-Domain Analysis in the help browser, under SimElectronics -> Demos -> Generic Circuits.
There are other resources in the Simscape documentation:
Hope this helps,
Arnaud

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More Answers (2)

Rajiv Singh
Rajiv Singh on 28 Feb 2011
See also "frestimate".

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Roberto Gomez
Roberto Gomez on 16 Feb 2011
I have only the diagram of the buffer 1 current source (100mA/50Hz),1 resistor (18ohm), 1 capacitor (1microF) and 1 operational amplifier in Simscape and i want to get bode diagrams. It is possible?

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