Simulink Control Design™ - MathWorks

frest.Chirp

Package: frest

Swept-frequency cosine signal

Syntax

input = frest.Chirp(sys)

input = frest.Chirp('OptionName',OptionValue)

Description

input = frest.Chirp(sys) creates a swept-frequency cosine input signal based on

the dynamics of a linear system sys.

input = frest.Chirp('OptionName',OptionValue) creates a swept-frequency

cosine input signal using the options specified by comma-separated name/value pairs.

To view a plot of your input signal, type plot(input). To obtain a timeseries for your

input signal, use the generateTimeseries command.

Input Arguments

sys

Linear system for creating a chirp signal based on the dynamic characteristics of this

system. You can specify the linear system based on known dynamics using tf, zpk, or ss.

You can also obtain the linear system by linearizing a nonlinear system.

The resulting chirp signal automatically sets these options based on the linear system:

• 'FreqRange' are the frequencies at which the linear system has interesting
  dynamics.


• 'Ts' is set to avoid aliasing such that the Nyquist frequency of the signal is five times
  the upper end of the frequency range.

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