What is the code to do a transfer function between input and output?

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max
max 2013-8-7
I've got 2 vectors. I've to do the trasnsfer function between them. What is the code that I have to use?

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回答（2 个）

Azzi Abdelmalek
Azzi Abdelmalek 2013-8-7
编辑：Azzi Abdelmalek 2013-8-7
N=[1 2]
D=[1 3 4]
model=tf(N,D) % for continuous system
ts=0.1;
modeld=tf(N,D,ts)% for discrete system
  2 个评论
Azzi Abdelmalek
Azzi Abdelmalek 2013-8-7
[max commented]
Ok, I've wrong. I need the code inside the tf. I would like to kwnow how matlab calculate the transfer function.
Azzi Abdelmalek
Azzi Abdelmalek 2013-8-7
max, don't answer your question when you need to post a comment. Also you have 23 questions asked, none of them are accepted, sometimes you did not reply to the members answers neither their comments

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Azzi Abdelmalek
Azzi Abdelmalek 2013-8-7
You can use this code
syms p
N=[1 2]
D=[1 3 4]
moel=sum(N.*p.^(numel(N)-1:-1:0))/sum(D.*p.^(numel(D)-1:-1:0))

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