Curve Fitting for Forced Damping

3 ビュー (過去 30 日間)
Chinwe Orie
Chinwe Orie 2019 年 3 月 24 日
回答済み: Alex Sha 2019 年 4 月 28 日
Hello,
I used the curve fitting app to fit this equation to some data:
F./(m*sqrt((w0^2-w.^2).^2 + (g^2)*w.^2))
The constants for the equation are F, m, g and w0. w is the independent variable.
My starting points for the data were F = 0.8491, g = 0.9340, m = 0.6787, and w0 = 125.
The method chosen is "NonlinearLeastSquares" and the algorithm chosen is "Levenberg-Marquardt".
However, the fit doesn't fit all that well. Here's a picture.
dampedeqcurvefitnotgood.jpg
Any tips on how to improve this fit? The R squared value for this fit is around 0.73.
My start points for this fit we
Thanks!

サインインしてこの質問に回答する。

回答 (1 件)

Alex Sha
Alex Sha 2019 年 4 月 28 日
Where are your data?

カテゴリ

Help Center および File Exchange で Get Started with Curve Fitting Toolbox についてさらに検索

タグ

製品


リリース

R2018b

Community Treasure Hunt

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

Start Hunting!

Translated by