It is possible to perform spectrum analysis (Fast Fourier Transform (FFT)) on signals using the Simulation Data Inspector (SDI) in MATLAB/Simulink. You can try the below steps:
- Make sure the signals of interest are logged during the simulation run. You can do this by selecting the signals in your Simulink model and enabling logging.
- After the simulation is complete, open SDI by either:
- Clicking the Simulation Data Inspector button in Simulink.
- Type the below line in the MATLAB command window.
Simulink.sdi.view
- Right-click on the signal you want to analyse in the signal table.
- Select Analyze > Spectrum (FFT) from the context menu.
- Alternatively, use the Visualization Settings panel to change the plot type to Spectrum (FFT).
- You can adjust parameters such as the number of points for the FFT, windowing functions, and other settings to refine your analysis.
- The FFT analysis view will display the frequency spectrum of the signal, allowing you to analyse the frequency components.
You can refer the below documentation link for more info on “Simulink.sdi.view” command and SDI
