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RE: bode not working: sys undefined
From: |
Uwe Dippel |
Subject: |
RE: bode not working: sys undefined |
Date: |
Sat, 10 Oct 2009 23:24:53 +0800 |
User-agent: |
Thunderbird 2.0.0.23 (X11/20090817) |
It looks like you didnt define the "sys" in the bode command. You can try to
read here:
http://www.obihiro.ac.jp/~suzukim/masuda/octave/html/octave_127.html#SEC192
Look at the "State space system interface functions" for example.
Good luck.
From that link:
Example
octave:1> a = [1 2 3; 4 5 6; 7 8 10];
octave:2> b = [0 0 ; 0 1 ; 1 0];
octave:3> c = eye (3);
octave:4> sys = ss (a, b, c, [], 0, 3, 0, {"volts", "amps", "joules"});
octave:5> sysout(sys);
Input(s)
1: u_1
2: u_2
[....]
What I get, is the same thing as before:
octave:1> a = [1 2 3; 4 5 6; 7 8 10];
octave:2> b = [0 0 ; 0 1 ; 1 0];
octave:3> c = eye (3);
octave:4> sys = ss (a, b, c, [], 0, 3, 0, {"volts", "amps", "joules"});
error: `ss' undefined near line 4 column 7
octave:4>
(I would really like to understand what is going wrong here, seemingly
all the time!)
Uwe