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ss2tf & MIMO
From: |
Alvin W |
Subject: |
ss2tf & MIMO |
Date: |
Sun, 30 May 2010 09:11:10 -0700 |
User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.8) Gecko/20100329 Thunderbird/3.0.3 |
Does the ss2tf command from control package version 1.0.11 support MIMO?
I was attempting to transform the following matrices into transfer
functions, but it gives me an error.
octave:1> A
A =
-0.015227 0.038974 0 -0.087786
-0.17471 -1.0092 0.98349 -0
0 -13.901 -2.367 0
0 0 1 0
octave:2> B
B =
-0
-0.10468
-20.381
0
octave:3> C
C =
Diagonal Matrix
1 0 0 0
0 1 0 0
0 0 1 0
0 0 0 1
octave:4> D
D =
0
0
0
0
octave:5> [num,den] = ss2tf(A,B,C,D)
error: ss2tf: not SISO system: m=1, p=4
Any idea? The above commands worked fine on MATLAB.
Btw, where can I download the beta version of the control package?
Thanks,
Al