Frequency-response models obtained using spectral analysis
|System Identification||Identify models of dynamic systems from measured data|
Live Editor Tasks
|Estimate Spectral Model||Estimate spectral model using time-domain data in the Live Editor|
|Estimate empirical transfer functions and periodograms|
|Estimate frequency response with fixed frequency resolution using spectral analysis|
|Estimate frequency response and spectrum using spectral analysis with frequency-dependent resolution|
|Frequency response data or model|
|Obtain model parameters and associated uncertainty data|
|Modify values of model parameters|
|Bode plot of frequency response, or magnitude and phase data|
|Magnitude-only Bode plot of frequency response|
|Evaluate system response over a grid of frequencies|
|Change frequency units of frequency-response data model|
Examples and How To
- Estimate Frequency-Response Models in the App
You must have already imported your data into the app and performed any necessary preprocessing operations.
- Estimate Frequency-Response Models at the Command Line
You can use the
spafdrcommands to estimate spectral models.
- What is a Frequency-Response Model?
A frequency-response model is the frequency response of a linear system evaluated over a range of frequency values.
- Data Supported by Frequency-Response Models
Characteristics of data supported for estimation of spectral analysis models.
- Selecting the Method for Computing Spectral 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
Controlling frequency resolution of spectral models during estimation in the app and at the command line.
- Spectrum Normalization
The spectrum of a signal is the square of the Fourier transform of the signal.