How to find the limit of a transfer function defined using tf?

47 次查看（过去 30 天）
Janno Rhey Don
Janno Rhey Don 2020-7-23
评论： Janno Rhey Don 2020-7-23
I defined a transfer function using:
>> sys1=tf([20 20],poly([-4 -3]))
sys1 =
20 s + 20
--------------
s^2 + 7 s + 12
now i want to find its limit s->0, how do i do this?
tried using limit(sys1) but it didnt accept it

请先登录，再回答此问题。

采纳的回答

Serhii Tetora
Serhii Tetora 2020-7-23
sys1=tf([20 20],poly([-4 -3]));
[Num,Den] = tfdata(sys1,'v');
syms s
sys_syms=poly2sym(Num,s)/poly2sym(Den,s);
lim = limit(sys_syms,s,0)

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Dynamic System Models 的更多信息

标签

产品


版本

R2018a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by