non linear optimization.

1 次查看（过去 30 天）
Kommineni chandra sekhar
评论： Torsten 2017-5-4
CT_mod= (alpha).*(((tetaT).*den_T.*pi.*(DT.^2).*LT)./4).*c_T;
CH1_mod = ((1-alpha).*(((tetaT).*den_T.*pi.*(DT.^2).*LT)./4).*c_T)+((beta).*((tetaH).*den_H.*(pi./12).*LH.*((DT.^2)+(DC.^2)+(DT.*DC))).*c_H);
CH2_mod = (1-beta-gama).*((tetaH).*den_H.*(pi/12).*LH.*((DT.^2)+(DC.^2)+(DT.*DC))).*c_H;
CH3_mod = ((1-epsi).*((((tetaC).*den_C.*pi.*(DC.^2).*LC)./4).*c_C))+((gama).*((tetaH).*den_H.*(pi/12).*LH.*((DT.^2)+(DC.^2)+(DT.*DC))).*c_H);
CC_mod = (epsi).*((((tetaC).*den_C.*pi.*(DC.^2).*LC)./4).*c_C);
I want to solve above equations for alpha,beta,gama,epsi,tetaT,tetaH,tetaC, remaining CT_mod,CH1_mod,CH2_mod,CH3_mod,CC_mod,DT,DC,LH,LT,LC are known parameter. Above equations are repeated for 8 different objects. so, total around 40 equations. I tried different possible ways to solve, But I couldn't. I want to minimise above equations, i.e minimising RMSE, finding better unknowns. could someone help me to figure it out?

请先登录，再回答此问题。

回答（1 个）

Torsten
Torsten 2017-5-4
Use "lsqnonlin".
Best wishes
Torsten.
  2 个评论
Kommineni chandra sekhar
Kommineni chandra sekhar 2017-5-4
Thank you Torsten for your reply, could you please elaborate your answer because I tried with lsqnonlin also. I'm confused with constrain and unconstrains in the syntax.
Torsten
Torsten 2017-5-4
Please post your MATLAB code so far.
Best wishes
Torsten.

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Nonlinear Optimization 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