清空筛选条件
清空筛选条件

Help in defining fmincon fucntion - Optimization Toolbox

1 次查看（过去 30 天）
Afz
Afz 2012-8-28
I am unfamiliar with working of MATALAB so I need some basic help in using this function.
I want to make my function zero or near zero (It could be negative value but it should be a value nearest to zero)
The other constrains is the all variables should be in between 0.3 to 0.7. Its values can have up to 10 digits after decimal points e.g 0.54465941365)
Problem Its not giving me a value that could give a near zero value.
Thankyou
Here is my Problem Setup
Objective function: @myfun
Derivatives: Approximated by Solver
Start point:[0;0;0;0;0]
A: Empty b: Empty
Aeq: Empty beq:Empty
Bounds:
Lower: [0.3;0.3;0.3;0.3;0.3]
Upper: [0.7;0.7;0.7;0.7;0.7]
Nonlinear constraint function: Empty
Derivatives: Approximated by solver
Options: Default
Results
Objective function value: -390.45426224401234
Local minimum found that satisfies the constraints.
Final Points
Variable 1.0 = 0.6
Variable 2.0 = 0.3
Variable 3.0 = 0.6
Variable 4.0 = 0.3
Variable 5.0 = 0.6

请先登录，再回答此问题。

回答（2 个）

Walter Roberson
Walter Roberson 2012-8-28
fmincon is a minimizer, not a 0 finder.
You could minimize @(x) myfun(x).^2
Alan Weiss
Alan Weiss 2012-8-28
To expand upon Walter's answer, use lsqnonlin instead of fmincon.
Alan Weiss
MATLAB mathematical toolbox documentation

类别

在 Help Center 和 File Exchange 中查找有关 Problem-Based Optimization Setup 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by