Solving system of 5 variable

4 views (last 30 days)
Md Shihab Adnan
Md Shihab Adnan on 26 Feb 2015
Answered: A Jenkins on 26 Feb 2015
I have been trying to model a electrical circuit with transmission line. But the problem is i don't know the characteristic data of this electrical transmission line.
So i used a known DC resistance of 50 ohm and measured the impedance magnitude and angle at 5 different frequency. According to my model i have 5 unknown variable. So what i did like this:
I created 5 symbolic variable like R1, L1, C1, R2& L2. The Zeq is like this:
Zeq= R1+1i*W*L1+(1/(1i*W*C1))(R2+50+1i*W*L2)/(R2+50+1i*W*L2+1/(1i*W*C1))*
I tried to simplify this expression but it doesn't. Is there any way to simplify this equation further?
Basically i have impedance value measured at 5 different frequency and i have this expression. So i used solve command to solve 5 variable from 5 equation . First of all it takes a lot of time. And finally it shows that "No Explicit solution could not be found"
Is there any better way to solve 5 variable system? or using Simulink?
Thanks in advance and Regards

Answers (1)

A Jenkins
A Jenkins on 26 Feb 2015


Find more on Electrical Block Libraries in Help Center and File Exchange

Community Treasure Hunt

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

Start Hunting!