working with transfer function, overflow error

5 次查看（过去 30 天）
upna fruit
upna fruit 2013-5-20
I am working with a transfer function that modelates a MIMO system of 15 inputs and 15 outputs. I have to perform the following operation:
H2=H/(A*H+B);
where H is the transfer function of the original system, A and B are scalar matrix of dimensions 15x15 and H2 is the transfer function that I want to obtain.
I have tried the command:
Hin=A*H+B;
H2=H/Hin;
but I obtain the following message: 'Unable to convert the model to a transfer function because of overflow'
Thanks in advance.

请先登录，再回答此问题。

回答（1 个）

Jamie
Jamie 2013-8-5
编辑：Jamie 2013-8-5
Hi upna,
I note this post is rather old. I trust you've long since resolved the issue. In the off-chance.. in this situation I would usually look to obtain a minimal realisation with a suitable tolerance prior to the manipulation of H
i.e.
> minreal(H,tolerance)
In general, numeric LTI models are not ideal where accuracy is concerned. If poss a ss approach would be preferable
http://www.mathworks.com/help/control/ug/conversion-between-model-types.html

类别

在 Help Center 和 File Exchange 中查找有关 Model Order Reduction 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by