How to change the transfer function variable in simulink during simulation time

2022 9 7
1 个回答
更新时间：2022 9 19
6 次查看（30 天）

0 个投票

Hi,
I have a Simulink model, where I need to change the transfer function coefficient during simulation run time. For example the TF is (1/1+sRC). Here R and C values need to change during run time. How to do that? Problem here is that the R value is calculated with the load current, that is (output voltage)/(load current). So I know the load current variation by calculating the R values. If anyone knows how to change the TF coefficient during runtime please help me. Thanks in advance.

请先登录，再回答此问题。

回答（1 个）

Paul
Paul 2022-9-7

0 个投票

Hi Swasthik,
If I understand correctly, the R and C values are changing dynamically. Just use blocks (integrators, subtraction, product, etc.) to implement the first order differential equation explicitly. The Transfer Function block is intended to be used with fixed parameters.

4 个评论
显示 2更早的评论 隐藏 2更早的评论

Hi Paul, Thanks for the reply. I didn't understand properly. Let me explain again, for example, I have a transfer function 1/(sRC+1) at the output of some system. Where i need to check the system behaviour for different load conditions. How can I do that? Can you elaborate with some examples. I am sorry to trouble you. Thanks in advance.
Sam Chak
Sam Chak 2022-9-8
Hi @Swasthik Baje Shankarakrishna Bhat
What @Paul meant is probably that the transfer function
can be expressed in the 1st-order Differential equation form:
.
If R is a function of the state , then using the Integrator block and some fundamental blocks, you can construct the signal flow according to this Integral equation:
.
Thank you so much paul and sam. It worked. Sorry for the late reply. Regards, Swasthik

请先登录，再进行评论。

类别

在 帮助中心 和 File Exchange 中查找有关 General Applications 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