User`s guide

3 Linear Model Identification
'Property1',Value1,...,
'PropertyN',ValueN)
where data is the estimation data, n is the model order, and nk specifies the
input delays for each input.
As an alternative to
pem,youcanusen4sid:
m = n4sid(data,n,
'nk',nk,
'Property1',Value1,...,
'PropertyN',ValueN)
Note pem uses n4 sid to initialize the state-space matrices.
For more information about the most common p roperty-value pairs you can
specify, see “Common Properties to Specify Model Estimation” on p ag e 3-88.
For detailed information about the s yntax , see the correspo nding reference
page.
For more information about estimating model order, see “Estimating the
Model Order at the Com mand Line” on page 3-82.
For information about validating your model, see “Overview of Model
Validation and Plots” on page 8-2
Common Properties to Specify Model Estimation
The following properties are common to specify in the estimation syntax:
•
SSparameterization —Specifies the state-space parameterization
form. For more information about estimating a specific state-space
parameterization, see the following topics:
- “How to Estimate Free-Parameterization State-Space Models” on page
3-90
- “How to Estimate State-Space Models with Canonical Parameterization”
on page 3-91
3-88