How to get RC circuit parameter for equivalent circuit diagram from measurement Graph?
22 次查看(过去 30 天)
显示 更早的评论
Hallo MathWorks community,
I am trying to model the RC equivalent Circuit of fuse from thermal Cauer-Model as shown below, according to time Constant theory here, Temperature (T) reches to stedy-state in 5 Time Constant.
Thermal Cauer Model
Temperature measurement Graph
Time Constant
I have measured Temperature for 45 Min and from that Graph, I need to get RC Parameters values for the Cauer Model.
Rth1 Cth1
Rth2 Cth2
Rth3 Cth3
Rth4 Cth4
Rth5 Cth5
How can I get these 5 RC pair values from the measurement of the Temperature Graph? Is there any script similar to this "Generate Parameter Data for Equivalent Circuit battery Block" Link: Generate Parameter Data for Equivalent Circuit Battery Block - MATLAB & Simulink - MathWorks Deutschland
Thank you so much in advance!
Alps
0 个评论
采纳的回答
Yifeng Tang
2021-9-1
Simscape user here. So first, I would build the thermal network using the thermal domain. It's just a few thermal resistance and thermal masses. With the thermal resistance and masses values (equivalent to R & C) unknown, I would then use the Parameter Estimator App in Simulink Design Optimization to estimate each of the parameters. I think there are 5 unknown parameters to figure out here, instead of 10, since each RC pair represent only one time constant and should scale with each other. As long as the 5 time constants are distinctive enough from each other, you should be able to obtain reasonable estimates this way. More on Parameter Estimation:
You can of course use electrical circuit model in Simscape and use the same parameter estimation method.
更多回答(0 个)
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Electrical Systems 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!