fuzzy controller in simulink

I have implemented fuzzy controller in simulink in ode45 with variable step size. It was not converging to reference but when I used solver-ode14x with fixed step size; it converged to reference value. why? any help

Answer 1

[Mohammad Hossein Zardary]

Dear Beenish

First of all tell us the learning algorithm.

As you know all of the algorithms are sample based and when you use a fixed step size solver, your training algorithm works well, when you use variable step the sampling time willbe chosen by matlab considering the rest of your parameters and training algorithm can't adapt the parameters.