Frequency Response Analyzer

Version 1.3 (322 KB) by Pat Gipper
Perform frequency analysis of your Simulink model without linearization


Updated 19 Nov 2021

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Typical bode response analysis of models requires that you linearize around an operating point. Which can be difficult and uncertain especially when the model contains non-linearities. This add-on application allows the dynamic analysis of a model using injection of a sine wave that is swept over any frequency range of interest. This duplicates how devices are tested in labs.
Refer to the help tab to get started using the tool with a simple model.

Cite As

Pat Gipper (2023). Frequency Response Analyzer (, MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2021a
Compatible with any release
Platform Compatibility
Windows macOS Linux

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Version Published Release Notes

Repaired problems introduced by Matlab R2021a with plots losing labels and grids. Fixed error when stimulus array (e.g. [ti,ui]) doesn't exist in the user workspace.


Added improved error checking including examining the model for I/O signals. Added a Console window tab for giving more detailed information and error messages. If licensed, allow the use of Control Toolbox lsim by the analyzer in favor of ode45.


Typo correction in description.


Changed Title, Summary & Description