System Identification Toolbox™ 7.2

Latest Features

Version 7.2

Released: 01 Mar 2008
 

Version 7.2, part of Release 2008a, includes the following enhancements:

• New support for simulating nonlinear black-box models in Simulink
• Ability to linearize nonlinear black-box models at user-specified operating points
• Ability to estimate models using weighted sum of least-squares minimization criterion
• Improved handling of initial states for linear and nonlinear models

See the Release Notes for details.

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Version 7.1

Released: 01 Sep 2007
 

Version 7.1, part of Release 2007b, includes the following enhancements:

• Ability to estimate static nonlinearities for Hammerstein-Wiener models using a one-variable polynomial

See the Release Notes for details.

Version 7.0

Released: 01 Mar 2007
 

Version 7.0, part of Release 2007a, includes the following enhancements:

• Ability to estimate nonlinear black-box models, including nonlinear ARX and Hammerstein-Wiener models
• Ability to estimate nonlinear grey-box models based on arbitrary ordinary differential equations specified in an M-file or MEX-file
• New getting started guide

See the Release Notes for details.

Version 6.2

Released: 01 Sep 2006
 
Version 6.2, part of Release 2006b, includes the following enhancements:

• Support for MATLAB Compiler

See the Release Notes for details.

Version 6.1.3

Released: 01 Mar 2006
 

Version 6.1.3, part of Release 2006a, includes a number of bug fixes. See the Release Notes for details.

Version 6.1.2

Released: 01 Sep 2005
 

Version 6.1.2, part of Release 14 with Service Pack 3, includes a number of bug fixes. See the Release Notes for details.

Version 6.1.1

Released: 07 Mar 2005
 

Version 6.1.1, part of MathWorks Release 14 with Service Pack 2, includes minor enhancements. See the Release Notes for details.

Version 6.1

Released: 22 Sep 2004
 

Version 6.1 of the System Identification Toolbox contains minor enhancements and is fully compatible with MathWorks Release 14 products.

Version 6.0.1

Released: 02 Jun 2004
 

Version 6.0.1 of the System Identification Toolbox contains minor enhancements and is fully compatible with MathWorks Release 14 products.

Version 6.0

Released: 06 Nov 2003
 

Identification and Validation Using Frequency-Domain Data

• Enables the use of time and frequency data for estimating discrete- and continuous-time models
• Provides means to directly import data from frequency analyzers
• Operates using the same reliable methodology as time-domain identification and validation
• Preprocesses data using filtering and frequency response analysis

Identification and Validation of First-, Second- and Third-Order Continuous-Time Models with Delays

• Provides access to lower-order models commonly used for control applications in the process, manufacturing, automotive, aerospace, and electronics industries
• Uses new graphical user interface developed specifically for continuous-time model identification
• Identifies transport delay common in industrial processes
• Uses time or frequency data to identify continuous models
• Constrains model based on user selected criteria

Toolbox Functions and Simulink Blocks

• An advice function evaluates test data and model structures and suggests changes to improve the model identification process.
• A spafdr function estimates the frequency response of time- and frequency-domain data allowing frequency-dependent resolution.
• Simulink source and sink blocks transmit native System Identification Toolbox data types without conversion.
• A Simulink block imports native System Identification Toolbox models without conversion.