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| R2012a Documentation → Simulink Design Optimization | |
Learn more about Simulink Design Optimization |
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| Contents | Index |
This table summarizes what's new in V 1.1 (R2009b):
| New Features and Changes | Version Compatibility Considerations | Fixed Bugs and Known Problems |
|---|---|---|
| Yes Details below | Yes Summary | Bug
Reports Includes fixes |
New features and changes introduced in this version are:
This version of the product includes changes at the command line to make the fmincon and lsqnonlin methods to be consistent with the Optimization Toolbox™ software:
Algorithm property renamed to Method.
New Algorithm option.
LargeScale option removed.
The following table summarizes values of the new Algorithm option.
| Method | Algorithm Values |
|---|---|
| fmincon |
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| lsqnonlin |
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Previously, to specify the algorithm at the command line, you set the LargeScale option to 'on' or 'off'. If you used LargeScale='on' in a previous release, use Algorithm='trust-region-reflective' instead. If you used LargeScale='off', use the following instead:
For fmincon – Use Algorithm='active-set'.
For lsqnonlin – Use Algorithm='levenberg-marquardt'.
For more information about these options, see the Optimization Toolbox User's Guide.
The Options dialog box includes the following updates to the Gradient descent and Nonlinear least squares methods that correspond to the command-line changes.
Algorithm option is renamed to Method.
Model size option is deprecated and replaced by Algorithm.
When you load a saved project, the software uses the Model size value to update the Algorithm value automatically.
When you optimize parameters using the Gradient Descent method, an Algorithm value other than the default value of Active-Set can lead to a slightly different result.
For more information on how to specify the method and its algorithm, see Estimation Options and Optimization Options.
You can now use optimization-based compensator design for frequency-response data (FRD) plants or plants with exact time delays in the SISO Design Tool. For more information, see Designing Optimization-Based Controllers for LTI Systems and Designing Linear Controllers for Simulink Models in the Simulink Design Optimization User's Guide.
| Function or Property Name | What Happens When You Use Function or Property? | Use This Instead | Compatibility Considerations |
|---|---|---|---|
| Algorithm | Errors | Method | See New Algorithm Option for fmincon (Gradient descent) and lsqnonlin (Nonlinear least squares) Methods, LargeScale (Model size) Option Removed |
| LargeScale | Errors | Algorithm | See New Algorithm Option for fmincon (Gradient descent) and lsqnonlin (Nonlinear least squares) Methods, LargeScale (Model size) Option Removed |
 | Version 1.1.1 (R2010a) Simulink Design Optimization Software | Version 1.0 (R2009a) Simulink Design Optimization Software |  |
Learn more about resources for designing, testing, and implementing control systems.
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