Why does the RESIDUE function return incorrect results in MATLAB?
显示 更早的评论
Why does the RESIDUE function return incorrect results in MATLAB?
The following code provides unexpected results:
a = 0;
b = 1;
[r,p,k] = residue(a,b)
r =
[]
p =
[]
k =
1
In this case, k should be ZERO and not 1.
采纳的回答
MathWorks Support Team
2009-6-27
0 个投票
This bug has been fixed for Release 14 SP1 (R14SP1). For previous releases, please read below for any possible workarounds:
This is a bug with the RESIDUE function in MATLAB that our development staff is currently investigating.
If you have The Signal Processing Toolbox, you can use the RESIDUEZ function to work around this issue. There are no other known workarounds at this time.
1 个评论
That's not what the outputs of residue mean nor how partial fraction expansion works. The pole at s = 0 is repeated and residue knows that r(2) applies to the repeated pole
num = 1;
den = [1 0 0];
tf(num,den)
[r,p,k] = residue(num,den);
[newnum,newden] = residue(r,p,k);
tf(newnum,newden)
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 MATLAB 的更多信息
产品
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
