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Version 3.0 (R2009b) Simulink Control Design Software

This table summarizes what's new in Version 3.0 (R2009b):

New Features and Changes	Version Compatibility Considerations	Fixed Bugs and Known Problems	Related Documentation at Web Site
Yes Details below	No	Bug Reports Includes fixes	Printable Release Notes: PDF Current product documentation

New features and changes introduced in this version are

• New GUI for Tuning New PID Controller Blocks

• New Automated PID Tuning Algorithm

• Ability to Compute Frequency Response of Simulink Models

• Ability to Specify the Linearization of Simulink Blocks

• Ability to Design Compensators for Plant Models With Time Delays

• New Commands to More Efficiently Compute Multiple Linearizations

• Ability to Set Default Plot Type for Linear Analysis Results from GUI

New GUI for Tuning New PID Controller Blocks

You can automatically tune the new Simulink PID Controller blocks in the PID Tuner GUI R2009b introduces. You launch the PID Tuner directly from the PID block dialogs boxes. These blocks are available in the Continuous and Discrete Simulink libraries.

For more information on tuning PID Controller using the PID Tuner, see Automatic PID Tuning.

New Automated PID Tuning Algorithm

You can now tune compensators using a new automated PID tuning algorithm called Robust Response Time, which is available in the SISO Design Task. You specify the open-loop bandwidth and phase margin, and the software computes PID parameters to robustly stabilize your system.

For information on tuning compensators using automated tuning methods, see Completing the Design.

Ability to Compute Frequency Response of Simulink Models

You can now compute the frequency response of a Simulink model using simulation. You use new commands to easily create input signals and simultaneously simulate and estimate the frequency response without changing your model. You can also use this capability to validate the accuracy of exact linearizations.

For more information on computing the frequency response of Simulink models, see Frequency Response Estimation of Simulink Models.

Ability to Specify the Linearization of Simulink Blocks

You can now specify the linearization of Simulink blocks, subsystems, and model references without having to replace any block in your model. You can specify the linearizations as LTI models or Robust Control Toolbox uncertain models.

For more information on specifying linearization results, see Configuring the Linearization of Specific Blocks and Subsystems.

Ability to Design Compensators for Plant Models With Time Delays

You can now design compensators for plants with exact time delay representations. Previously, you had to specify a Padé approximation before designing compensators.

For more information on designing compensators for plants with time delays, see Designing Compensators for Plants with Time Delays.

New Commands to More Efficiently Compute Multiple Linearizations

You can now more efficiently compute multiple linearizations for large models when only a few blocks or model references change per linearization. You linearize the fixed portion of the model once using linlft and linearize the varying portion multiple times. Then, you combine the results using linlftfold to obtain linearizations equal to those you would receive if you linearized the entire model multiple times.

For more information, see the linlft and linlftfold reference pages.

Ability to Set Default Plot Type for Linear Analysis Results from GUI

You can now set the default plot type for viewing linear analysis results computed in the Control and Estimation Tools Manager. This setting applies to all future Control and Estimation Tools Manager sessions.

To set this option in the Simulink Control Design Preferences, select File > Preferences in the Control and Estimation Tools Manager.

Version 3.1 (R2010a) Simulink Control Design Software

Version 2.5 (R2009a) Simulink Control Design Software

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