generate bode plot using simulink

PONNANTHIRAJA

2026 6 27

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LLC_tf.slx

I have working on LLC controller design for that i try to extract transfer function using simulink model then i add bode plot function block and i configure input perturbation and output everything fine working when i saw result on bode plot it was empty and there is no plot i tried every possible way i didnt got it.

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Purvaja about 4 hours 前

I understand that you've already configured the Bode Plot block and shared the Simulink model. Based on your description, one area worth investigating is whether the model is being successfully linearized at the selected operating point. If the linearization does not produce a valid linear model, the Bode plot may appear empty even though the simulation itself runs successfully.

You may find the following documentation helpful for understanding the Bode Plot block requirements and the linearization workflow:

Bode Plot block: https://www.mathworks.com/help/slcontrol/ug/bodeplot.html
Specify Linear Analysis Points: https://www.mathworks.com/help/slcontrol/ug/specify-model-portion-to-linearize.html

Additionally, you may find this related MATLAB Answers discussion useful. Although it uses the Model Linearizer app instead of the Bode Plot block, it discusses how an unsuccessful linearization can result in an empty Bode plot and provides guidance on troubleshooting the linearization workflow:

https://www.mathworks.com/matlabcentral/answers/1453559-why-do-i-get-an-empty-bode-plot-when-using-the-model-linearizer-app-for-a-simulink-model-that-repres

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