tfdata

Extracts data from a transfer function model.

Syntax

[NUM, DEN, Ts] = tfdata(SYS)

Inputs

SYS
A transfer function model.

Outputs

NUM
A matrix (numerator).
DEN
A matrix (denominator).
Ts
Sampling time (in seconds).

Examples

Transfer function data from numerator and denominator: 
h = tf([2 3],[5 1 1]);
[num, den, Ts] = tfdata(h)
num = 
{
[1,1] v = [Matrix] 1 x 2
2  3
}
den = 
{
[1,1] v = [Matrix] 1 x 3
5  1  1
}
Ts = 0
Transfer function data obtained from state space model: 
sys = ss(1,8,2,1);
[sysq.num,sysq.den]=ss2tf(sys.a,sys.b,sys.c,sys.d);
h = tf(sysq.num,sysq.den);
[num, den, Ts] = tfdata(h)
num = 
{
[1,1] v = [Matrix] 1 x 2
1  15
}
den = 
{
[1,1] v = [Matrix] 1 x 2
1  -1
}
ts = 0

Comments

[NUM, DEN, Ts] = tfdata(SYS) returns transfer function information for a transfer function model object.