Parameter Identification using Least Square Method Optimization

4 次查看（过去 30 天）

Jack 2011-5-19

Hi,

I trying to identify the parameters (di) of a function D(t) = d1*exp(-t) + d2*exp(-t)..di*exp(t) from discrete values D(t_n).

Thus, for n values of t, I have n experimental values of D(t_n).

I want to find the (di) parameters of D(t) by minimizing

F = D(t)-D(t_n), along the n values of t.

F will then be a vector where each component have i unknowns.

I have tried using lsqnonlin function but it doesn't work...

Since D(t) is symbolic, F is symbolic too.

Thanks!

Andrew Newell 2011-5-19

Are you sure you have written your function right? The first two terms add up to (d1+d2)*exp(-t), which is effectively one parameter.

在 Help Center 和 File Exchange 中查找有关 Nonlinear Optimization 的更多信息

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

Translated by