Nonlinear differential equation curve fitting to experimental data
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Jakub Jedrzejczyk
on 7 Mar 2018
Answered: Star Strider
on 7 Mar 2018
Hello there. I'm new user of MatLab and I want to ask for your help. I must fit curve of differential equation:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/171035/image.jpeg)
where Pe, P0, R, gamma are known parameters, to my experimental data:
t [ms] p[bar]
20,3689 0,58653
22,3770 0,86538
24,0984 1,18269
26,3934 1,75000
27,5410 2,29808
28,9754 2,88462
30,6967 3,86538
32,7049 5,39423
35,5738 7,40385
36,4344 8,07692
37,5820 8,49039
38,1557 8,90385
38,7295 9,08654
39,5902 9,40385
As a result I want to obtain the value of Su corresponding to curve fitted to experimental data. How shold I start to solving this problem in MatLab? Are there any examples of fitting similar equations? Thank you for any advice!
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