User`s guide

tf
11-227
To do this, type
num = {[1 1] ; 1}
den = {[1 2 2] ; [1 0]}
H = tf(num,den,'inputn','current',...
'outputn',{'torque' 'ang. velocity'},...
'variable','p')
Transfer function from input "current" to output...
p + 1
torque: -------------
p^2 + 2 p + 2
1
ang. velocity: -
p
Note how setting the 'variable' property to 'p' causes the result to be
displayed as a transfer function of the variable .
Example 2
To use a rational expression to create a SISO TF model, type
s = tf('s');
H = s/(s^2 + 2*s +10);
This produces the same transfer function as
h = tf([1 0],[1 2 10]);
Example 3
Specify the discrete MIMO transfer function
p
Hz()
1
z 0.3+
-----------------
z
z 0.3+
-----------------
z– 2+
z 0.3+
-----------------
3
z 0.3+
-----------------
=