Optimal control problem in fmincon exitflag = 2?

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Wang Benliang
Wang Benliang 2020-4-4
Hello, i apologize for disturb you, i have met some problem in `fmincon`.
My OCP has 300 variables. so i set MaxFunEvals = 1e7, and the result exitflag = 2. outputs says:
Local minimum possible. Constraints satisfied.
fmincon stopped because the size of the current step is less than
the value of the step size tolerance and constraints are
satisfied to within the value of the constraint tolerance.
Then i use the result `X` to check @nonlinear_constraint function, i find the ceq and c is not satisfied the TolCon = 1e-6. so the result is bad, how to improve it if i didn't konw the Hessian and grad?
Thank you, any advice i will be very appreciate!

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