Model Type Action
Models with fast discrete sample time
specified at output point
Insert a Rate Transition block at the output
point to lower the sample rate, which
decreases the amount of logged data. Move
the linearization output point to the output
of the Rate Transition block before you
estimate. Ensure that the location of the
original output point does not have aliasing
as a result of rate conversion.For information on determining sample rate,
see “View Sample Time Information”
(Simulink). If your estimation is slow, see
“Ways to Speed up Frequency Response
Estimation” on page 5-81.Models with multiple input and output
points (MIMO models)
- Estimate the response for all input/
output combinations separately. Then,
combine the results into one MIMO
model using the data format described in
“Create Frequency-Response Model from
Data” (Control System Toolbox). - Use parallel computing to run the
independent simulations in parallel on
different computers. See “Speeding Up
Estimation Using Parallel Computing” on
page 5-83.
Managing Estimation Speed and Memory