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Hello, I¦m running MATLAB optimi

Hello, I¦m running MATLAB optimi

Hello, I¦m running MATLAB optimi


I´m running MATLAB optimization toolbox, and i´m using fmincon function for contrained non-linear minimization. I can run the code with no problems, but it only runs one iteration, and after it stop, saying this message:


Max Line search Directional First-order
Iter F-count f(x) constraint steplength derivative optimality Procedure
0 7 0.0040098 -0.11

Optimization completed: The first-order optimality measure, 0.000000e+000, is less
than options.TolFun = 1.000000e-020, and the maximum constraint violation, -1.100000e-001,
is less than options.TolCon = 1.000000e-006.

Optimization Metric Options
first-order optimality = 0.00e+000 TolFun = 1e-020 (selected)
max(constraint violation) = -1.10e-001 TolCon = 1e-006 (default)

No active inequalities.

Can you please give me some useful tips in solving this problem?


Hugo Silva
Mechanical Eng. PhD student
Materials Eng. MSc.

RE: Hello, I¦m running MATLAB optimi

I have never used the canned optimization function, but I suspect the problem is here

max(constraint violation) = -1.10e-001 TolCon = 1e-006 (default)

sadly without understanding more about your system that's all i can tell.


Greg Locock

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