如何在 matlab 'fminsearch' 中编写约束（x），如 'fmincon'

Question

hi guys I have some problem

I coding some optimization one

4 variables f(x1,x2,x3,x4)

so...I was using 'fmincon'...but it doesn't work very well

here is the Question

how can I write a constraints(x) in 'fminsearch' like 'fmincon'

---------------constraints(x) form look like---------------------------

    function [C, Ceq] = constraints(x)

    B=1200;       
    N=1;          

    C(1)= 60-x(1) ;
    C(2)= 50-x(4) ;                                                 
    C(3)=-140+x(1)+x(2);                                   
    C(4)=-x(3)+x(4);                                       
    C(7)=x(3)-B*N;                                       
    C(5)=-x(2);                                          
    C(6)= x(1)*B + x(4)*x(2)*N + (x(3)-x(4))*x(2)/2*N -107000; 

    Ceq=[];

    end

---

cruel life xoxo

Answer 1

You can't. fminsearch is for unconstrained problems.

However, you can choose a different fmincon algorithm:

• 'interior-point' (default)
• 'trust-region-reflective'
• 'sqp'
• 'sqp-legacy'
• 'active-set'

See fmincon Algorithms . Use optimoptions to set the Algorithm option at the command line.