minimizing objective function

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Abex 2012-4-26

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Hi, How can I estimate two unknown parameters of a relation by minimizing the object function based on relative area error to parametric domain given by other relation? Thanks, Abera

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Abex 2012-4-27

Dear Sean,

Thank you.

Let me explain the problem further. I have a function dα/dt=A*exp(-E/R*T)*(1-α) to be solved using ode45 but A and E are unknown. Now I want to estimate A and E by minimizing relative error area expressed interms of α say F=∑(α(i)-αexp(i))/(Tf-To) where αexp, Tf and To are known.

I used ode45 for initial value of and A and E and obtained α. Now that I face difficulty in minimizing the object function, the algorithm itself.