Simulink Control Design™ - MathWorks

(Tuis.) #1

  • A chirp signal, specified using frest.Chirp

  • A random signal, specified using frest.Random

  • A step signal, specified using frest.createStep

  • An arbitrary signal, specified as a MATLAB timeseries


For more information about creating input signals for frequency response estimation, see
“Estimation Input Signals” on page 5-31.


op — Operating point
operating point object


Operating point at which to initialize the model for estimation, specified as one an
operating point object. Create the operating point object using:



  • operpoint

  • findop with either a single operating point specification or a single snapshot time


Generally, you use a steady-state operating point for estimation. If you do not specify an
operating point, the estimation process begins at the operating point specified by the
model initial conditions. This operating point consists of the initial state and input signal
values stored in the model.


options — Estimation options
frestimateOptions object


Estimation options, specified as a frestimateOptions object. Available options include
enabling parallel computing for estimation (requires Parallel Computing Toolbox).


data — Response data logged for offline estimation
structure | Simulink.SimulationData.Dataset object


Response data logged for offline estimation using the Frequency Response Estimator
block, specified as one of the following:



  • A structure obtained by writing the data from the data output port of the block to the
    MATLAB workspace using a To Workspace block. The Save format parameter of the
    To Workspace block must be Timeseries.

  • A Simulink.SimulationData.Dataset object obtained by using Simulink data
    logging to write the data at the data port to the MATLAB workspace.


frestimate
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