Define the nonlinear constraint function. The default Solver, fmincon - Constrained nonlinear minimization, is selected. If the optimization was successful, you can display or otherwise work with obj, the final value of the objective, and the vector x, the final values of the decision variables. I am trying to use 'fmincon' to solve a problem, but I get the same error, again and again. fmincon with nonlinear equality constraints - MATLAB Answers - MATLAB Central fmincon with nonlinear equality constraints Follow 9 views (last 30 days) Show older comments Vlad Bec on Edited: John DErrico on Hi, I have optimization problem to solve with fmincon function. calling fmincon, you must test the exitflag value to determine whether any error occurred. Nonlinear constraint functions must return two arguments: c, the inequality constraint, and ceq, the equality constraint. The function that computes the nonlinear inequality constraints c(x)0 c ( x ) 0 and the nonlinear equality constraints ceq(x)0. You must pass the arguments in the correct order, and supply the empty matrix for the arguments you are not using.
#Fmincon matlab nonlinear constraints code
This page illustrates how you can solve the following constrained nonlinear optimization problem:Ġ = 0, so we must multiply by -1 to form -x1 * x2 <= 0.īelow is the code to call fmincon, passing vectors for the lower and upper bounds on the variables, and the addresses of the two functions above. 2 I wanted to solve a constrained minimization problem using fmincon.
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