Simulink® Control Design™ 2.3

Latest Features

Version 2.3

Released: 01 Mar 2008
 

Version 2.3, part of Release 2008a, includes the following enhancements:

• New diagnostic summary for troubleshooting linearization results
• Ability to compute steady-state operating points for Simscape models

See the Release Notes for details.

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Version 2.2

Released: 01 Sep 2007
 

Version 2.2, part of Release 2007b, includes the following enhancements:

• Full support for linearization and compensator design of Simulink models containing model reference blocks
• New option to compute exact linear time-invariant representation of Simulink models with time delays
• Ability to linearize periodic function-call subsystems

See the Release Notes for details.

Version 2.1

Released: 01 Mar 2007
 

Version 2.1, part of Release 2007a, includes the following enhancements:

• Ability to linearize using an operating point specified directly in a Simulink model
• Ability to linearize at simulation snapshots using the GUI
• Ability to perform control design at simulation snapshots using the GUI

See the Release Notes for details.

Version 2.0.1

Released: 01 Sep 2006
 
Version 2.0.1, part of Release 2006b, includes minor enhancements.
See the Release Notes for details.

Version 2.0

Released: 01 Mar 2006
 

Version 2 includes enhancements that let you:

• Design compensators directly in a Simulink model
• Tune multiloop compensators in a single environment, giving you immediate insight into the effects of coupling between feedback loops
• Tune blocks using block parameters (such as PID gains) or zero-pole-gain representations
• Tune compensators in a control system using all the graphical and automated design tools in the Control System Toolbox and Simulink Response Optimization (both available separately)

See the Release Notes for details.

Version 1.3

Released: 01 Sep 2005
 

Version 1.3, part of Release 14 with Service Pack 3, includes the following enhancements:

• Support for operating point searches, operating point snapshots, and numerical perturbation based linearization of models containing Model Reference blocks
• Direct export of operating points from the Control and Estimation Tools Manager to initialize a Simulink model
• Support for copying operating points in the Control and Estimation Tools Manager

See the Release Notes for details.

Version 1.2

Released: 07 Mar 2005
 

Improved Usability and Expanded Capabilities for Model Linearization

• View state-space, transfer function, and zero-pole gain representations of linearized models within the Control and Estimation Tools Manager without exporting to the workspace
• Use either truncated or full signal names or block names in the state-space matrices of a linearized model and within the LTI Viewer for improved readability
• Access context-sensitive help for the Linearization, Operating Point Search, and Linearization State Ordering Options window of the Control and Estimation Tools Manager
• Select from three discretization methods for linearization of multirate and hybrid models
• View a complete list of Simulink blocks with pre-programmed analytic linearizations used for block-by-block analytic linearization

For additional details, see the Release Notes.

Version 1.1

Released: 22 Sep 2004
 

Known Problems and Corrections

Version 1.1 corrects the following software problems:

• Continuous and discrete integrator blocks near saturation produced incorrect answers when linearized. The block dialog now provides options for handling saturation during linearization.
• Unit delay blocks linearized to zero gain when fed non-double data signals. They now linearize to their correct discrete unit delay values.
• SimPowerSystems models sometimes linearized incorrectly when linearization I/O points were added to virtual subsystems.
• When using a multitasking solver, Simulink Control Design allowed linearization of models containing multiple discrete states with different sample rates. The product no longer allows linearization in this situation and requires that the model be set to a single- tasking, fixed- step solver or a variable-step solver.