Frequency-Response Models

Frequency-response models obtained using spectral analysis

Apps

Identify models of dynamic systems from measured data

`etfe`	Estimate empirical transfer functions and periodograms
`spa`	Estimate frequency response with fixed frequency resolution using spectral analysis
`spafdr`	Estimate frequency response and spectrum using spectral analysis with frequency-dependent resolution
`idfrd`	Frequency response data or model

`getpvec`	Obtain model parameters and associated uncertainty data
`setpvec`	Modify values of model parameters
`bode`	Bode plot of frequency response, or magnitude and phase data
`bodemag`	Magnitude-only Bode plot of frequency response
`freqresp`	Frequency response over grid
`chgFreqUnit`	Change frequency units of frequency-response data model

You must have already imported your data into the app and performed any necessary preprocessing operations.

You can use theetfe,spa, andspafdrcommands to estimate spectral models.

Afrequency-response modelis the frequency response of a linear system evaluated over a range of frequency values.

Characteristics of data supported for estimation of spectral analysis models.

How to select the method for computing spectral models during estimation in the app and at the command line.

Controlling frequency resolution of spectral models during estimation in the app and at the command line.

Thespectrumof a signal is the square of the Fourier transform of the signal.