MATLAB: Tf object manipulation

guitransfer function

Is there a way to print tf object in a gui?

Best Answer

Small example

syms s 
Numerator=[1]; 
Denominator=[1 0 1]; 
sys=tf(Numerator,Denominator) 
ex=evalc('sys') 
[a b] = strread(ex, '%s %s', 'delimiter',char(10)); 
num=char(a(2)); 
den=char(a(3));

Now you have the numerator and denominator that can be used in the String of some GUI object like the edit or text

Related Solutions

MATLAB: How to run a simulation with a transfer function block and a multi dimensional input

I tested a model and found problems doing what you want, my workaround is:

Insert a sine wave block (f=2*pi*0.22 and phase=rand), tf block (your num and den)
Insert one mux block (three inputs) and the scope
Now copy and paste the sine wave block two times
Do the same for the transfer function block (paste it two times)
Connect the sine waves to each transfer function block
Connect the transfer functions outputs to the mux and the mux to the scope

Now with just one simulation you get three waves

MATLAB: What does s = tf (‘s’) do

Using:

s = tf('s');

allows you to enter the transfer function in the next line in symbolic form rather than as numerator and denominator vectors. You can easily recover the numerator and denominator vectors from the system object created:

s = tf('s');
sys = (244.2*s + 244.2) / (0.015*s^4 + 1.525*s^3 + 2.51*s^2 + 245.2*s + 1221);
num = [sys.Numerator{:}]
den = [sys.Denominator{:}]
num =
            0            0            0        244.2        244.2
den =
        0.015        1.525         2.51        245.2         1221

Best Answer

Related Solutions

MATLAB: How to run a simulation with a transfer function block and a multi dimensional input

MATLAB: What does s = tf (‘s’) do

Related Question