User`s guide

freqresp
11-85
at the frequencies . Type
w = [1 10 100]
H = freqresp(P,w)
H(:,:,1) =
0 0.5000– 0.5000i
–0.2000+ 0.6000i 1.0000
H(:,:,2) =
0 0.0099– 0.0990i
0.9423+ 0.2885i 1.0000
H(:,:,3) =
0 0.0001– 0.0100i
0.9994+ 0.0300i 1.0000
The three displayed matrices are the values of for
The third index in the 3-D array
H is relative to the frequency vector w,soyou
can extract the frequency response at rad/sec by
H(:,:,w==10)
ans =
0 0.0099– 0.0990i
0.9423+ 0.2885i 1.0000
Ps()
0
1
s 1+
------------
s 1–
s 2+
------------
1
=
ω
110100
,,=
Pj
ω()
ω 1,= ω 10 ,= ω 100=
ω
10
=