I need to put this block diagram in MATLAB (not in Simulink) and I do not know how to do it
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This is the diagram
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1505689/image.png)
And this is what I've got so far in code:
s = tf('s');
s1 = tf(1, [1 4]);
s2 = tf(1, 1);
s3 = tf(1, [1 0 9]);
s4 = 10;
s5 = 12;
s6 = tf([1 6],1);
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Answers (2)
Paul
on 9 Oct 2023
Hi Carlos,
3 Comments
Paul
on 9 Oct 2023
Edited: Paul
on 9 Oct 2023
That actually looks like it might be correct, assuing that A,B,C,D,G, and J have been defined properly. Can't tell for sure unless you post the complete code. T might be in the descriptor form because J(s) is improper (higher order numerator than denominator), but T can changed to tf or zpk form with tf(T) or zpk(T) respectively, and from there changed back to state space form if desired.
Sam Chak
on 9 Oct 2023
When utilizing the syntax s = tf('s') to establish a special variable 's', you gain the ability to directly formulate rational expressions for the creation of transfer function models. Employing a rational expression proves to be more intuitive, particularly when handling high-order transfer functions. Furthermore, it is advisable to generate dynamical model objects, with the 'tf' class being one of the viable options in this regard.
s = tf('s');
s1 = 1/(s + 4)
s2 = 1/s
s3 = 1/(s^2 + 9)
s4 = tf(10)
s4a = 10 % test subject
s5 = tf(12)
s6 = s + 6
whos
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