Bode problem with s^5 in transfer function numerator
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Dear all,
I am using a transfer function to describe filter system but it seems once the function has expression of delay components
(ex. the numerator expression is: a*s^N + b*s^(N-1) + ... + z*s^M, M>=0),
bode function will show every odd frequency response for numerator has larger than s^5 or above delays (ex. M>=5)
I suppose this is caused by positive feedback of S>4 (90 degrees X 4) and hope this problem can be confirmed by Matlab. I also hope this small flaw can be fixed in new bode analysis function.
Thank you.
1 件のコメント
Arkadiy Turevskiy
2014 年 5 月 21 日
Can you post the code, the bode plot you get, and detailed explanation of why you think it is wrong. Also please specify what verion you are using (do >>ver ).
Otherwise, your request is vague and difficult to follow up on.
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