Simulink® Response Optimization™

optimize - Run response optimization project

Syntax

result=optimize(proj)

Description

result=optimize(proj) optimizes the responses specified in the response optimization project, proj, with the constraints, parameters, and settings. The response optimization results are displayed after each iteration. The tuned parameters are changed in the workspace. Enter the parameter name at the MATLAB prompt to see its new value.

A results object, result, is also returned. The properties of this object are

• Cost: The final value of the cost function.

• ExitFlag: 1 if the optimization terminated successfully, 0 if it did not.

• Iteration: The number of iterations.

For more information on the results properties, see the reference pages for the Optimization Toolbox functions fmincon and fminsearch and the Genetic Algorithm and Direct Search Toolbox function patternsearch.

Example

Open the pitchrate_demo model.

pitchrate_demo

Create a response optimization project based on the current settings in the model.

proj=getsro('pitchrate_demo');

Run the optimization with the following command.

results=optimize(proj)

The expected results are displayed as follows.

                           max               Directional  First-order 
Iter  S-count  f(x)   constraint  Step-size  derivative   optimality  Procedure
   0        1     0         1803                                        
   1       14     0          160     0.0287           0       0.0152    
   2       21     0       0.2607     0.0327           0      0.00598   Hessian modified
   3       28     0      0.04203      0.071           0       0.0122   Hessian modified
   4       35     0     0.001894     0.0164           0      0.00112   Hessian modified
   5       42     0   7.631e-006   0.000804           0    5.01e-006   Hessian modified
Successful termination.
Found a feasible or optimal solution within the specified tolerances.

k1 =

    0.8674


k2 =

   -0.1513


k3 =

   -0.5003


results = 

         Cost: 0
            X: [4x1 double]
     ExitFlag: 1
    Iteration: 5

The results can differ due to changes in MATLAB numerics, Simulink solvers, optimization algorithms, and running on different platforms.

See Also

findconstr, findpar, getsro, newsro, optimget, optimset

optimget

optimset