Answered
Global Optimization for a Simulink Model
You probably want to minimize the mean squared error. For an example, see lsqnonlin with a Simulink® Model. You can change the s...

ungefär 2 månader ago | 1

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Answered
fmincon contraints range issue
You simply need two constraints, area_surf < 10 and area_surf > 5. function [c, ceq]= contraints(x) c(2) = area_surf(x) - 10; ...

ungefär 2 månader ago | 0

Answered
optimization using symbolic toolbox
Your code returns j = (delta^2*t^3)/3 + (eta^2*t^3)/3 + t With this information, the symbolic portion of your problem is d...

ungefär 2 månader ago | 0

Answered
Optimization tools: handling error output from objective functions
I suggest that you test for unexpected results within your objective function code and handle it appropriately. For example, if ...

ungefär 2 månader ago | 0

Answered
Multi-stage amplifier optimization
I didn't try too run your code, but this line is incorrect syntax: ceq (1) = A(1)*A(2)*A(3)*A(4)*A(5) = 10000; It should be c...

ungefär 2 månader ago | 0

Answered
Unable to use for loop in fmincon
You are not passing the value of p into myfun1. What is it supposed to represent in your code? What I mean is, when you write f...

ungefär 2 månader ago | 1

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Answered
Bayesian optimization with sum constraint
This sounds like a balls-in-buckets problem. You have up to balls to place into buckets. The occupancy (number of balls) of bu...

2 månader ago | 0

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fminsearch, Not enough input arguments.
Next time please give the entire error message by copying and pasting everything in red: Not enough input arguments. Error i...

2 månader ago | 0

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Graphing a Multi-Objective Optimization problem
Using your functions (edited versions below), I called gamultiobj as follows: A = [2 1]; b = 2; options = optimoptions('gamul...

2 månader ago | 1

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Answered
Mixed Integer Linear Programming Problem
You might find the following documentation useful: Investigate Linear Infeasibilities Alan Weiss MATLAB mathematical toolbox ...

2 månader ago | 0

Answered
non-linear optimization with complex constrains
I think that you need to solve two different problems, one assuming w =100, one assuming w = 500. Your objective is discontinuou...

2 månader ago | 0

Answered
How To Optimize Model Parameters In Simulink?
Perhaps these examples are relevant: Fit ODE, Problem-Based Fit an Ordinary Differential Equation (ODE) Optimizing a Simulati...

2 månader ago | 1

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Answered
plot the final value of optimization
It seems that your data is x(i) and y(i), and the associated 2*a+3 and 4*b+9. Yeah, they are all constants, nothing much to plot...

2 månader ago | 0

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Answered
Multiobjective Genetic algorithm with integer variables
Sorry, currently there is no built-in function to perform integer-constrained multiobjective optimization. Alan Weiss MATLAB m...

2 månader ago | 1

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Inverse of a function gives different results than the negative function with fmincon
The problem could be related to a few things, such as numerical stability and the presence of multiple local minima. For numeri...

2 månader ago | 0

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Answered
What is the scale problem in lsqcurvefit optimization?
Check out the lsqcurvefit FiniteDifferenceStepSize option that you set with optimoptions. Alan Weiss MATLAB mathematical toolb...

2 månader ago | 0

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Optimization fmincon with integral. Results not optimal, what am I doing wrong?
The first-order optimality measure is not that small at the end. I suspect that your problem is a bit sensitive. i see in your c...

3 månader ago | 0

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Answered
Linear programming with conditional constraints
I think that you can do this with mixed-integer linear programming. Create auxiliary binary variables y1 and y2. These variables...

3 månader ago | 0

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Failure in initial objective function evaluation. FSOLVE cannot continue. Please help:(
The error is that fsolve expects just one input argument, and you have many (I count 5 arguments, A_py,A_sy,M_py,M_sy,P_c) : g...

3 månader ago | 0

Answered
Failure in initial nonlinear constraint function evaluation. FMINCON cannot continue.
You did a good job converting the problem to code. Your only real errors are typos in the nonlinear constraint function. Try thi...

3 månader ago | 0

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Mixed Integer (binary) Non-linear problem
That is way too many variables for ga even if it handled integer equality constraints. I suggest that you would probably be best...

3 månader ago | 0

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from fminsearch to bayesopt
You are free to use bayesopt, but you will have to change your objective function. For bayesopt you first have to create optimiz...

3 månader ago | 0

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Mesh Adaptive Direct Search
Before calling patternsearch first set the pseudorandom number generator: rng default % Or any other fixed rng value As for yo...

3 månader ago | 0

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convex function with constant Hessian
Perhaps you are looking for quadprog from Optimization Toolbox™. Alan Weiss MATLAB mathematical toolbox documentation

3 månader ago | 0

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Optimization of multiple functions for desired output
I am not sure that I understand what you are trying to do. If you have three variables to minimize, well, either you are fortuna...

3 månader ago | 0

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fzero error in fa value
Next time, please give the full error thrown by the function. As it is, I don't know what the error is. I guess that the error ...

3 månader ago | 0

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Solving Complex Equations Using "fmincon"
I don't understand why you are trying to use fmincon to solve systems of nonlinear equations. Use fsolve for that. And then you ...

3 månader ago | 0

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Answered
Mesh Adaptive Direct Search: Problems finding global solution
fmincon is the local solver of choice for smooth problems. patternsearch is NOT guaranteed to get a global solution (no solver i...

3 månader ago | 0

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Answered
ga (genetic algorithm) violated linear constraints
I would rescale the problem first. Your x(1), x(2), x(5), and x(6) variables should be multiplied by 1e8 or 1e9, so that they ha...

3 månader ago | 0

Answered
Variable optimization to minimize cost in array
Well, you probably want to minimize the cost function sum((Y - X).^2) or some such thing. Yes, there are many functions for doin...

3 månader ago | 0

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