User`s guide

11 Using System Identification Toolbox™ Blocks
m2=idss(m1);
For m ore information about specifying initial conditions for simulation, see
the IDMODEL Model reference page.
Specifying Initial States of Nonlinear ARX Models
The states of a nonlinear ARX model correspond to the dynamic elements
of the nonlinear ARX model structure, which are the model regressors.
Regressors can be the delayed input/output variables (standard regressors)
or user-defined transformations of delayed input/output variables (custom
regressors). For more information about the states of a nonlinear ARX model,
see the
idnlarx reference page.
For m ore information about specifying initial conditions for simulation, see
the IDNLARX Model reference page.
Specifying Initial States of Hammerstein-Wiener Models
The states of a Ham merstein-Wiener model correspond to the states of the
embedded linear (
idpoly) model. For more information about the states of a
Hammerstein-Wiener model, see the
idnlhw reference page.
The d ef au l t initial state for simulating a Hammerstein-Wiener model is 0 .
This setting might lead to unexpected transients in the simulated response.
For m ore information about specifying initial conditions for simulation, see
the IDNLHW Model reference page.
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