quick question for pade function
显示 更早的评论
[num den]=pade(100,1)
num =
-1.0000 0.0200
den =
1.0000 0.0200
>> num
num =
-1.0000 0.0200
which one is poles and which one is residues?
采纳的回答
Paulo Silva
2011-8-18
0 个投票
[num den]=pade(100,1)
num= -s+0.02 -> one zero at s=0.02
den= s+0.02 -> one pole at s=-0.02
You can see the zeros and poles like this pzmap(tf(num,den)) , or the step response step(tf(num,den)), tip: change the order from 1 to 2 and see what happens to the step response.
From the documentation of the pade function:
The row vectors num and den contain the numerator and denominator coefficients in descending powers of s. Both are Nth-order polynomials.
2 个评论
Amir Hamzah UTeM
2011-8-18
Paulo Silva
2011-8-19
Yes it's at s=-0.02
[r,p,k] = residue(num,den)
%[r,p,k] = residue(b,a) finds the residues, poles,
%and direct term of a partial fraction expansion
%of the ratio of two polynomials
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Time-Domain Analysis 的更多信息
2011-8-18
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
