Version 9.2 (R2011b) Control System Toolbox Software

This table summarizes what's new in Version 9.2 (R2011b):

New Features and Changes	Version Compatibility Considerations	Fixed Bugs and Known Problems
Yes Details below	Yes Details below	Bug Reports

New features introduced in this version:

• Formula-Based Specification of Summing Junctions and Vector Signal Naming for sumblk and connect

• Commands for Interacting with Control Design Blocks in Generalized LTI Models

• Functionality Being Removed or Changed

Formula-Based Specification of Summing Junctions and Vector Signal Naming for sumblk and connect

You can now use formula strings to specify the behavior of summing junctions with sumblk. For example, to create a summing junction, S, that takes the difference between signals r and y to produce signal e, enter the following command:

S = sumblk('e = r-y');

Additionally, both sumblk and connect now support vector-based signal naming for interconnecting multi-input, multi-output (MIMO) models. For more information, see the sumblk and connect reference pages.

Commands for Interacting with Control Design Blocks in Generalized LTI Models

The following new commands allow you to examine and set the values of Control Design Blocks in Generalized LTI Models:

• getValue — Get nominal value of Generalized Model (replaces getNominal)

• setValue — Modify value of Control Design Block

• getBlockValue — Get nominal value of Control Design Block in Generalized Model

• setBlockValue — Set value of Control Design Block in Generalized Model

• showBlockValue — Display nominal values of Control Design Blocks in Generalized Model

For more information about these commands, see the reference pages for each command.

Functionality Being Removed or Changed

Functionality	What Happens When You Use This Functionality?	Use This Instead	Compatibility Considerations
delay2z	Errors	absorbDelay	Replace delay2z with absorbDelay.
getNominal	Errors	getValue	Replace getNominal with getValue.
Scale and Info properties of realp parameter	Errors	None	None
sumblk('a','b','c','+-')	Still works	sumblk('a=b-c')	Use new formula-based syntax for sumblk.

Version 9.3 (R2012a) Control System Toolbox Software

Version 9.1 (R2011a) Control System Toolbox Software

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