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

问题描述

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

标签： matlaboptimizationfminsearch

解决方案

你不能。fminsearch是针对无约束问题的。

但是，您可以选择不同的fmincon算法：

  • '内部点' （默认）
  • '信任区域反射'
  • 'sqp'
  • 'sqp-legacy'
  • '活动集'

请参阅fmincon 算法。用于optimoptions在命令行设置算法选项。

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