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Where do I find Simulink in the spectrum analyzer?
See Signal Dimensions (Simulink) and Determine Signal Dimensions (Simulink). The Spectrum Settings pane appears at the right side of the Spectrum Analyzer window.
How to use the same sample rate as the input signal?
Inherited to use the same sample rate as the input signal. Positive scalar. The specified sample rate must be at least twice the input signal sample rate. Otherwise, you might see unexpected behavior in your signal visualization due to aliasing. See SampleRate. Select Welch or Filter Bank as the spectrum estimation method.
Where does the envelope spectrum appear in MATLAB?
The envelope spectrum appears in the spectrum view of the display. The envelope spectrum clearly displays the BPFO harmonics. The computation of the envelope spectrum can get tedious if it has to be repeated for many different bearings. Signal Analyzer can generate MATLAB® scripts and functions to help you automate the computation.
How to calculate envelope spectrum of vibration signal?
Use Signal Analyzer to compute the envelope spectrum of a bearing vibration signal and look for defects. Generate MATLAB® scripts and functions to automate the analysis. A bearing with the dimensions shown in the figure is driven at cycles per second.
How can I determine the frequency of a signal in Simulink?
A built-in block that determines the frequency of a signal is not available in the Simulink product. To work around this issue, you can write a C-MEX S-function that implements a fast Fourier transform (FFT) algorithm. For more information, see “Writing S-Functions” in the Simulink documentation.
How to calculate the response of a Simulink model?
The Simulation Results Viewer lets you examine the results of frequency response estimation frequency by frequency. You open the viewer using the frest.simView command. To do so, store the simulation data using the simout output argument of frestimate. Estimate the open-loop response of the plant in the watertank model. First, open the model.
How does frestimate work in a Simulink model?
frestimate injects the input signal you specify (uest(t)) at the input analysis points. It simulates the model and collects the response signal (yest(t)) at the output analysis points, as illustrated below for a sinestream input.