User`s guide

Choosing idgrey or idnlgrey Model Object
Comparison of idgrey and idnlgrey Objects (Continued)
Settings and
Operations
Supported by
idgrey?
Supported by
idnlgrey?
Honor stability
constraints specified by
Algorithm.Advanced.
Threshold.Zstability
and
Algorithm.Advanced.
Threshold.Sstability
model properties
Yes No
Note If you know
the parameter bounds
for obtaining a stable
idnlgrey model, set
these bounds to ensure
stability.
Estimate a disturbance
model
Yes
The disturbance model
is represented by
K in
state-space equations.
No
Optimize estimation
results for simulation
or prediction
Yes
Set the
Algorithm.Focus
property to
'Simulation' or
'Prediction'.
No
Because
idnlgrey
models are
Output-Error models,
thereisnodifference
betweensimulationand
prediction results.
5-5