Transfer function is defined as:
With Matlab control system tollbox:
K0=2; T0=4;
num0=[K0 0];
den0=[T0 1];
H0=tf(num0,den0);
Transfer function with a time-delay:
Tdelay = 1;
Hd = tf(num0,den0,’InputDelay’,Tdelay)
The function tfdate retrieves the information:
[numHd,denHd] = tfdata(Hd,’v')
numHd =
2 0
denHd =
4 1
Input delay can be retrieved by the get command:
get(Hd,’InputDelay’)
ans =
1
To show the impulse or step response of a system:
impulse(Hd)
step(Hd)
To show the Poles and Zeros:
pole(Hd)
zero(Hd)
pzmap(Hd)
Use the command bode to plot the magnitude and phase of the frequency response:
bode(Hd)
Matlab has wrapped all the above commands (plus a lot more) into the function ltiview:
ltiview
Matlab Signal Processing
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