All the step responses are unstable, including the cross-couplings, because this model has
not yet been tuned.
After you tune the model, you can similarly use the designated analysis points to extract
system responses for validating the tuned system. If you want to examine system
responses at locations that are not needed to specify design requirements, add these
locations to the slTuner interface as well. For example, plot the sensitivity function
measured at the output of the block roll-off 2.
addPoint(ST0,'dc')
dcS0 = getSensitivity(ST0,'dc');
bodeplot(dcS0)
Create and Configure slTuner Interface to Simulink Model