User`s guide

8 Model Analysis
How to Plot Hamme
rstein-Wiener Plots at the
Command Line
You can plot inpu
t and output nonlinearity and linear responses for
Hammerstein-Wi
ener models using the following syntax:
plot(model)
model
must be an
idnlhw model object. You can use additional plot
arguments to sp
ecify the following information:
• Include severa
l Hammerstein-Wiener models on the plot.
• Configure how to
evaluate the nonlinearity at each input and output
channel.
• Specify the tim
e or frequency values for com puting transient and frequency
response plo t
softhelinearblock.
The plot comma
nd opens the Hammerstein-Wiener Model Plot window.
For more infor
mation abo ut working with this plot window , s ee “Plotting
Nonlinear Bl
ock Characteristics” on page 8-58 and “Plotting Linear Block
Characteris
tics” on page 8-59.
For detailed
information about
plot, type the following command at the
prompt:
help idnlhw/pl ot
Plotting No
nlinear Block Characteristics
The Hammerst
ein-Wiener model can contain up to two nonlinear blocks. The
nonlineari
ty at the input to the Linear Bl o ck is labeled u
NL
andiscalledthe
input nonli
nearity. The nonlinearity at the output of the Linear Block is
labeled y
NL
andiscalledtheoutput nonlinearity.
To configure
the plot, perform the following steps:
1 If the top p
ane is not visible, click
to expand the H ammerstein-Wiener
Model Plot
window.
2 Select the non lin ea r block you want to plot:
8-58