New answers tagged poles-zeros
11
votes
Accepted
Why don't unit circle poles lead to infinite amplitude response for Butterworth lowpass?
You've made an understandable mistake. You are probably looking at this picture:
That is not the unit circle, and it isn't even in the $z$ domain.
What you are looking at is the locations of the ...
- 8,131
4
votes
Accepted
Specify notch bandwidth by pole placement
Summary
Given the equation for the transfer function of the second order notch filter:
$$ H(z) =\frac{1+2\alpha \cos(\omega_n)+\alpha^2}{2+2\cos(\omega_n)}\frac{z^2-2z\cos\omega_n+1}{(z^2-2az\cos\...
- 36.1k
0
votes
What is the difference between natural response and zero input response?
have a look at:
https://www.youtube.com/watch?v=isSFqzZwu38
time: 19:22,
he mentions that total= a) homogenous+particular,
b) force + natural
c) zero state+ zero input
and that force+natural are not ...
1
vote
Confused with region where root locus lies and sketch
I suspect that $G(s)$ is the Open Loop Gain. The root Locus would be the location of the poles in the Closed Loop Gain as you vary $K$. The poles in the Closed Loop Gain are given by the roots of the ...
- 36.1k
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