how to get the value of interations needed by nlmpcmove

hello everyone,

I am currently using the nlmpcmove() function to calculate the optimal solutions for my nonlinear problem. Since the calculations take quite some time, I wanted to try and limit the maximum iterations allowed for the solver to caluclate the solution. This works quite well.

But now to my problem:

I want to know how many iterations the solver needed for the optimal or suboptimal solution. The output [~,~,info], doesn't seem to give me enough information to do so!?

Does anyone know a simple solution? Thank you in advance :)

cheers

Answer 1

[Harsha Priya Daggubati]

Hi,

A manual approach to find the number of iterations if to plot your Cost Function against Number of iterations using a for loop and examine the plot. If incase you plot does not converge choose a threshold and compare with the two subsequent cost function values.

You can also try using fmincon which provides similar functionality.

https://www.mathworks.com/help/optim/ug/fmincon.html#busog7r-4