ga question_error "Could not find a feasible initial point"

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Azam Boskabadi 2018-9-11

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https://ww2.mathworks.cn/matlabcentral/answers/418545-ga-question_error-could-not-find-a-feasible-initial-point

评论： Azam Boskabadi 2018-9-12

I'm coding a small example of a huge problem. I think I did all the steps correctly but I get this error: "Could not find a feasible initial point" I searched and I saw I should check to not have linear constraints, and if the way I'm using ga is correct. I checked both of those things but they seem correct, is there anyone who knows what else should I check? or what else can make the problem? This is a part of my codes:

 Aeq=[];
   Beq=[];
   nonlcon=@nlcon;
   UB=[1;1;1;1;1; inf(40,1); 1;1; 1;1;1;1;1;1;1;
                  inf(40,1); 1;1; 1;1;1;1;1;1;1];%vector with upper bound
   LB=zeros(54+49,1);%vector with lower bound
   nvars=5+((8*5)+2+7)*2;
   IntCon=[1,2,3,4,5, 46,47, 48,49,50,51,52,53,54,   95,96, 97,98,99,100,101,102,103];
   x=ga(@obj_function,nvars,A,B,Aeq,Beq,LB,UB,nonlcon,IntCon);

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Azam Boskabadi 2018-9-11

编辑：Walter Roberson 2018-9-11

在 MATLAB Online 中打开

yes, but a and b are very big matrices that are made by concatenating some other matrices:

A=[A_X_FS,A_F_FS,A_O_FS,A_W_FS, zeros(22,49);A_X_SS,zeros(22,49),A_F_SS,A_O_SS,A_W_SS];
B=[B_FS; B_SS];
function [c,ceq]=nlcon(x)
% Nonlinear inequality constraints:
C=[0.0187, 0.0187, 0.0092, 0.0280, 0.0023];
c=[x(46)*(C(1)*(3.258*x(6)+8.503*x(7)-20.98*x(48)+13.16*x(8)-58.238*x(49)+17.537*x(9)-110.756*x(50)+21.728*x(10)-177.812*x(51)+25.781*x(11)-258.883*x(52)+29.726*x(12)-353.562*x(53)+33.5949*x(13)-461.876*x(54))+C(2)*(3.258*x(14)+8.503*x(15)-20.98*x(48)+13.16*x(16)-58.238*x(49)+17.537*x(17)-110.756*x(50)+21.728*x(18)-177.812*x(51)+25.781*x(19)-258.883*x(52)+29.726*x(20)-353.562*x(53)+33.5949*x(21)-461.876*x(54))+ C(3)*(3.258*x(22)+8.503*x(23)-20.98*x(49)+13.16*x(24)-58.238*x(49)+17.537*x(25)-110.756*x(50)+21.728*x(26)-177.812*x(51)+25.781*x(27)-258.883*x(52)+29.726*x(28)-353.562*x(53)+33.5949*x(29)-461.876*x(54)));
      x(47)*(C(2)*(3.258*x(14)+8.503*x(15)-20.98*x(48)+13.16*x(16)-58.238*x(49)+17.537*x(17)-110.756*x(50)+21.728*x(18)-177.812*x(51)+25.781*x(19)-258.883*x(52)+29.726*x(20)-353.562*x(53)+33.5949*x(21)-461.876*x(54))+C(4)*(3.258*x(30)+8.503*x(31)-20.98*x(48)+13.16*x(32)-58.238*x(49)+17.537*x(33)-110.756*x(50)+21.728*x(34)-177.812*x(51)+25.781*x(35)-258.883*x(52)+29.726*x(36)-353.562*x(53)+33.5949*x(37)-461.876*x(54))+C(5)*(3.258*x(38)+8.503*x(39)-20.98*x(48)+13.16*x(40)-58.238*x(49)+17.537*x(41)-110.756*x(50)+21.728*x(42)-177.812*x(51)+25.781*x(43)-258.883*x(52)+29.726*x(44)-353.562*x(53)+33.5949*x(45)-461.876*x(54)));
     x(95)*(C(1)*(3.258*x(55)+8.503*x(56)-20.98*x(97)+13.16*x(57)-58.238*x(98)+17.537*x(58)-110.756*x(99)+21.728*x(59)-177.812*x(100)+25.781*x(60)-258.883*x(101)+29.726*x(61)-353.562*x(102)+33.5949*x(62)-461.876*x(103))+C(2)*(3.258*x(63)+8.503*x(64)-20.98*x(97)+13.16*x(65)-58.238*x(98)+17.537*x(66)-110.756*x(99)+21.728*x(67)-177.812*x(100)+25.781*x(68)-258.883*x(101)+29.726*x(69)-353.562*x(102)+33.5949*x(70)-461.876*x(103))+ C(3)*(3.258*x(71)+8.503*x(72)-20.98*x(98)+13.16*x(73)-58.238*x(98)+17.537*x(74)-110.756*x(99)+21.728*x(75)-177.812*x(100)+25.781*x(76)-258.883*x(101)+29.726*x(77)-353.562*x(102)+33.5949*x(78)-461.876*x(103)));
      x(96)*(C(2)*(3.258*x(63)+8.503*x(64)-20.98*x(97)+13.16*x(65)-58.238*x(98)+17.537*x(66)-110.756*x(99)+21.728*x(67)-177.812*x(100)+25.781*x(68)-258.883*x(101)+29.726*x(69)-353.562*x(102)+33.5949*x(70)-461.876*x(103))+C(4)*(3.258*x(79)+8.503*x(80)-20.98*x(97)+13.16*x(81)-58.238*x(98)+17.537*x(82)-110.756*x(99)+21.728*x(83)-177.812*x(100)+25.781*x(84)-258.883*x(101)+29.726*x(85)-353.562*x(102)+33.5949*x(86)-461.876*x(103))+C(5)*(3.258*x(87)+8.503*x(88)-20.98*x(97)+13.16*x(89)-58.238*x(98)+17.537*x(90)-110.756*x(99)+21.728*x(91)-177.812*x(100)+25.781*x(92)-258.883*x(101)+29.726*x(93)-353.562*x(102)+33.5949*x(94)-461.876*x(103)))
];
% No Nonlinear equality constraints:
ceq=[];
end