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t=2.3263;
7 D( E- |6 J/ N5 Rk=0.5244;% f: e' a% y1 Z* |. B$ \
R=0.15;
& t' M0 Z3 ]1 {8 U8 m# ?u=[0.1221,0.1786,0.1452,0.1054,0.1132]';
! `; c* E' X$ {4 }2 }E=[1234,864,-617,-246,987;864,642,586,-198,-815;-617,586,1433,469,-963;-246,-198,469,346,25;987,-815,-963,25,1827];
; S6 u* ~2 `* B1 N" T6 M9 B4 gE=E/10000;! d3 m4 M6 s. W
c=0.0075;# j$ U1 S' p) c! r' ^
options = optimset('Algorithm','active-set'); % run active-set algorithm
9 k' l+ E- \+ [4 eaeq=[1+c,1+c,1+c,1+c,1+c];
, a5 t/ R# w) \beq=1;% o" `2 t3 @! N0 z; x
lb=[0,0,0,0,0]';
- K& x5 H8 |$ E5 ^2 w8 g" J/ Fub=[1,1,1,1,1]';" U$ v/ c m6 `& A8 e& X) x2 W
x0=[0.02,0.03,0.05,0.11,0.12]';
1 i3 c/ w% l9 N6 W0 H[x,fval,exitflag,output] = fmincon(@(x) myfun( x,t,E,u,c),x0,[],[],aeq,beq,lb,ub,@(x) mycon( x,t,k,E,u,c,R),options)& |8 t- j5 K" A& N$ {) y0 q1 x* O3 l
( F2 G" x" D" h/ |& s% ~; i
function f = myfun( x,t,E,u,c ) %目标函数
7 z$ G# O/ O$ y" o- p%UNTITLED3 Summary of this function goes here
; B8 j) M/ g( K: v, `, w$ y% Detailed explanation goes here3 Y. E* B6 ?; U# H8 j1 ^
f=t*sqrt(x'*E*x)-(u'-c)*x;* H2 h0 p0 m1 Y) c: c
end0 Y# u- P% h3 Y% s( ~( t' Z* u$ h
& D6 ]0 N3 I( v, @% m
function [C,Ceq] = mycon( x,t,k,E,u,c,R ) %非线性约束& S- h: Z) n. j1 `( o
%UNTITLED4 Summary of this function goes here4 q1 `. q4 l: Z6 P2 o+ q( I2 S
% Detailed explanation goes here
" m# i4 h8 X9 z( WC=t*k*sqrt(x'*E*x)/(t-k)-t*(u'-c)*x/(t-k)+t*R/(t-k);
5 D7 q- s9 r: HCeq=[];* [/ L+ \' h2 D7 m
end' ^+ h/ ]) b0 j: l7 C1 U- S
# b* _7 s; L6 A4 U9 Z6 i
' J% T$ \$ {/ c+ |( U/ s
运行结果:2 J. i4 ^9 A* w% T3 D9 V i, y
Solver stopped prematurely.
/ ?2 N% {3 J) M" K5 Z! Jfmincon stopped because it exceeded the function evaluation limit,8 d& [" M0 r" j% P6 O! ]9 P+ u
options.MaxFunEvals = 500 (the default value).
- q, c% d7 @$ H+ o5 q0 j* w& C4 W/ P
x =
' _: e8 J6 Z3 I& { -0.0175! p5 [- E8 q& L, N
0.4875
% ?7 T: s" ~" w" H2 t' F. U7 S* b -0.0175
$ z6 ?# @. ^9 z# v6 Q, P" P 0.30745 [; H4 o/ b2 J' x& X) g. ^
0.23283 Z6 ~& ], S5 P& z$ O% {! [+ j
1 |9 n, N9 l6 h$ V- g {' K( l$ I1 R
fval =
: Q, y5 B% i r3 }+ D2 {: q -0.0390
, R8 V W, Z) u3 o2 B! a
+ ?9 H, K5 }3 N" B( u+ @( i/ H* Yexitflag =
% z1 S( R0 @, x 0) p' g8 ?: p* B$ A9 F; z
# C" s# @- J* E+ v* t8 ^" p9 B+ T) O% E
output = # J# Z, x- s' e* a& t
iterations: 518 G: K7 N* i3 P, t X8 b0 t
funcCount: 505- u! f8 J3 g% C: ~
lssteplength: 0.1250( \ ^$ O) U5 S- n- M
stepsize: 0.08120 |( G4 W$ a) r( l7 k
algorithm: 'medium-scale: SQP, Quasi-Newton, line-search'9 i& \: \9 Q/ d6 p# q
firstorderopt: 2.4732
' ~9 H: w" E$ W4 c) [ T6 `9 V constrviolation: 0.0509, h% f7 S# j( j" N
message: [1x145 char]
7 Z9 g0 l* }/ j4 K' O: n. B2 e& \各位大虾,程序如上所述,为什么函数提前就结束了,是不是要改默认参数设置,小弟也试过,但是捣鼓不出来,希望各位高人不吝赐教,小弟先拜谢了 Orz |
zan
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