Specifications

Model Dynamics
4-5
Model Dynamics
The Control System Toolbox offers commands to determine the system
poles, zeros, DC gain, norms, etc. You can apply these commands to
single LTI models or LTI arrays. The following table gives an overview of
these commands.
With the exception of
norm, these commands are not supported for
FRD models.
Here is an example of model analysis using some of these commands.
h = tf([4 8.4 30.8 60],[1 4.12 17.4 30.8 60])
Transfer function:
4 s^3 + 8.4 s^2 + 30.8 s + 60
---------------------------------------
s^4 + 4.12 s^3 + 17.4 s^2 + 30.8 s + 60
pole(h)
ans =
–1.7971 + 2.2137i
Model Dynamics
covar
Covariance of response to white noise.
damp
Natural frequency and damping of system poles.
dcgain
Low-frequency (DC) gain.
dsort
Sort discrete-time poles by magnitude.
esort
Sort continuous-time poles by real part.
norm
Norms of LTI systems ( and ).
pole, eig
System poles.
pzmap
Pole/zero map.
zero
System transmission zeros.
H
2
L
∞
L
∞