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Simulink 7.4

Latest Features


Version 7.4

Released: 04 Sep 2009
 

Version 7.4, part of Release 2009b, includes the following enhancements:

See highlights and screen shots

Component-Based Modeling

  • Ability to configure model variants for efficiently managing design alternatives
  • Enhanced library link management, making it easier to visualize and restore edited library links
  • Model reference protected mode, enabling the sharing of models for simulation without exposing contents (requires Real-Time Workshop)
  • Enhanced Simulink Manifest Tools to discover and analyze model variants, protected models, and Simscape files
  • Enhanced S-Function Builder that supports bus signals for managing complex signal interfaces

Variable-Size Signals

  • New ability to change signal sizes during execution, facilitating modeling of systems with varying environments, resources, and constraints
  • Support for variable-size inputs and outputs in over 40 Simulink blocks, including many blocks from the Math Operations library

Data Management

  • Enhanced sim command that saves all simulation results to a single object for easier management of simulation results
  • New Simulink.saveVars function to save workspace variables to a MATLAB file
  • Enhanced simulation restart capability with SimState feature, supporting common model configuration changes

Block Enhancements

  • New turnkey PID Controller blocks with expanded simulation capabilities and automated tuning (requires Simulink Control Design)
  • New EnumeratedConstant block and enhanced Switch-Case block that support enumerated variables
  • Enhanced Relational Operator block that efficiently detects infinite, NaN, or finite signals for floating-point arithmetic
  • Enhanced Lookup Table (n-D) block, supporting parameter data types that are different from signal data types
  • Reduced parameter memory use for evenly spaced breakpoints in Prelookup and Lookup Table (n-D) blocks
  • Enhanced Math Function block that directly supports reciprocal square root, 1/sqrt(u), for efficient computation

Embedded MATLAB

  • Ability to create dynamically sized data in Embedded MATLAB Function blocks
  • New report for analyzing compilation errors, array sizes, and target hardware compatibility of compiled data types in Embedded MATLAB Function blocks
  • Ability to eliminate run-time checks from simulation code for faster simulation of Embedded MATLAB Function blocks and Stateflow charts

Simulation Performance

  • Enhanced sim command improves compatibility with parfor-loops
  • Enhanced timing resolution of fixed-step simulations by applying integer arithmetic to sample hit computations
  • Enhanced Simulink Accelerator mode to support SimState feature for continuing simulations from a saved state
  • Expanded Rapid Accelerator mode support for enumerations for root inputs and all fixed-point word lengths for parameters

User Interface Enhancements

  • Enhanced Mask Editor that supports tabs and specification of data type, min, and max parameters
  • New Frequently Used Blocks tab in Library Browser and context menu item for adding commonly used blocks to models
  • New Model Advisor Configuration Editor to manage and deploy Model Advisor configurations and custom checks (requires Simulink Verification and Validation)

See the Release Notes for details.


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Version 7.3

Released: 06 Mar 2009
 

Version 7.3, part of Release 2009a, includes the following enhancements:

See highlights and screen shots

Simulation Performance

  • Ability to save, restore, and restart the complete simulation state using the SimState feature
  • Ability to save Simulink Profiler results for subsequent viewing

Component-Based Modeling

  • Ability to display port values during simulation for referenced models in Normal mode
  • Parallel builds enabling faster update diagram times for large model reference hierarchies when configured in Accelerator Mode (requires Parallel Computing Toolbox)

Embedded MATLAB

  • Support for enumerated data types in Embedded MATLAB™ Function blocks
  • Support for Basic Linear Algebra Subroutines (BLAS) libraries to speed up low-level matrix operations in simulation

Data Management

  • Ability to specify custom storage class on the Signal Properties dialog box without creating a Simulink signal object in the workspace

File Management

  • Ability to specify a project root folder in the Simulink manifest, making manifests easier to share, compare, and read

Block Enhancements

  • Support for parameter data types different from signal data types in Prelookup and Interpolation Using Prelookup blocks
  • Lookup Table (n-D) and Interpolation Using Prelookup blocks now performing more efficient fixed-point interpolations
  • Lookup Table (n-D) block now supporting faster calculation of index and fraction for power of 2 evenly spaced breakpoint data
  • Discrete Filter block now supporting fixed-point data types
  • MinMax block now performing more efficient and accurate comparison operations for mixed floating-point and fixed-point data types

User Interface Enhancements

  • Ability to customize the Library Browser by adding, hiding, or disabling menu items and selecting which libraries and blocks appear in the browser
  • New Smart Guides option facilitating dynamic block alignment when editing a block diagram
  • Physical port rotation option for masked blocks to synchronize port rotation with block rotation and enable new Flip Block Up-Down and Left-Right options
  • New block rotation option to rotate counter clockwise
  • New programmatic methods for creating subsystems from selected blocks and accessing the compiled block sample time data, color, and annotations
  • New option to print the Sample Time Legend from the legend or from the block diagram print dialog box
  • Enhanced status bar progress indicator now showing additional information during update diagram for Windows® platforms

See the Release Notes for details.

Version 7.2

Released: 09 Oct 2008
 

Version 7.2, part of Release 2008b, includes the following enhancements.

See highlights and screen shots

Simulation Performance

  • New capability to run parallel simulations in rapid accelerator mode using parfor on prebuilt Simulink models (requires Parallel Computing Toolbox)
  • Enhanced tuning of solver and logging parameters in rapid accelerator mode without the need to rebuild
  • Fixed-point and integer word size limit extended from 32 to 128 bits for Embedded MATLAB code, accelerated simulation modes, and automatic code generation

Component-Based Modeling

  • New Model block simulation mode for Processor-in-the-Loop (PIL) verification of generated code (requires Real-Time Workshop Embedded Coder)
  • Enhanced handling of initial conditions for conditionally executed subsystems, Merge blocks, and Discrete-Time Integrator blocks, improving consistency of simulation results
  • Model block inputs can now be local and reusable for more efficient Real-Time Workshop® generated code, and reduced memory usage during simulation

Data Management

  • Support for enumerated data types
  • Filtering of displayed bus objects by name or relationship in bus editor
  • Fully customizable export and import functionalities in bus editor

File Management

  • Enhanced Simulink Manifest Tools additionally finds system target files, analyzes STF_make_rtw_hook functions, and analyzes all config sets

Block Enhancements

  • Enhanced Trigonometric Function block to support sincos
  • Enhanced Math Function and Trigonometric Function blocks to provide more floating-point consistency

User Interface Enhancements

  • Unified simulation and custom code options in the Configuration Parameters dialog for Embedded MATLAB Function blocks, Stateflow charts, and Truth Table blocks
  • New Model Advisor model and data restore point, providing ability to revert to changes made in response to advice fromModel Advisor
  • Context-sensitive help available for Model Advisor
  • Context-sensitive help available for Simulink Commonly Used block parameters
  • New Sample Time Legend that defines the Sample Time Colors and new color-independent annotations
  • New ultracompact display mode for library contents in Library Browser
  • Independent setting for Log signal data and Test point options in the Signal Properties dialog box

See the Release Notes for details.

Version 7.1.1

Released: 30 Oct 2008
 

Version 7.1.1, part of the Simulink product family update for Release 2008a, resolves several key customer-reported issues.

Read about the latest bug fixes for:

Version 7.1

Released: 01 Mar 2008
 

Version 7.1, part of Release 2008a, includes the following enhancements.

See highlights and screen shots

Simulink Library Browser Enhancements

  • Now runs on all platforms supported by Simulink software
  • Improved performance for browsing and searching of libraries, by allowing these operations to proceed without actually loading the libraries
  • Enhanced search finds all blocks and displays search results in a separate tab
  • New option to display library blocks in a compact grid layout that conserves screen space

Simulation Performance

  • Improved Rapid Accelerator sim command performance when running long simulations of small models on Windows platforms
  • Additional zero-crossing algorithm with adaptive detection and adjustable threshold limits improves simulation performance

Component-Based Modeling

  • Accelerator mode now supports an unlimited number of referenced models on all platforms, including 32-bit Windows
  • Improved model compilation time when using models referenced in accelerator mode by rebuilding parent models only when the interface to a referenced model changes

Embedded MATLAB™

  • Support for nontunable MATLAB structure parameters in Embedded MATLAB Function blocks

Data Management

  • Enhanced Data Type Assistant display of status and details of fixed-point data type
  • Enhanced signal range checking for both real and imaginary parts of a complex number
  • Enhanced Bus Editor importing/exporting of data from MAT-files and M-files, defining bus elements with the Data Type Assistant, and expanding bus hierarchies
  • Simulink Editor graphical indication of signals that must resolve to signal objects
  • In models with asynchronous function calls, correct assignment of generic sample times instead of triggered sample times by some virtual blocks
  • Changes to nontunable parameters during simulation ignored, matching the behavior in generated code
  • Enhanced data logging on 64-bit platforms, providing the ability to save more than 2 GB of simulation data

File Management

  • New autosave option for automatically saving models before updating or simulating
  • New option to notify when loading a model saved in a previous version of Simulink
  • Enhanced model dependencies manifest tools now also detect TLC files required by S-functions, .fig files created by GUIDE, and files referenced by common data loading functions

Block Enhancements

  • New Discrete FIR Filter block replaces the Weighted Moving Average block for faster simulation and improved code generation
  • Rate Transition block output port sample time now can be specified as multiple of input port sample time
  • Enhanced auto-insertion options for the Rate Transition block to control the level of data transfer determinism, allowing reduced latency for models that do not require determinism
  • Auto-insertion of Rate Transition block now supported for additional rate transitions, such as sample times with nonzero offset, and between non-integer-multiple sample times
  • Enhanced Lookup Table (n-D) block supports all data types, complex table data, and nonscalar inputs
  • Expanded Sum block dialog box displays new parameters for specifying the accumulator data type and its minimum and maximum values

User Interface Enhancements

  • New unified Simulink Preferences window for configuring default settings
  • Enhanced controls in the Solver pane of the Configuration Parameters dialog box
  • Enhanced Model Advisor with improved GUI navigation and report production
  • Context-sensitive help available for Configuration Parameters dialog box

See the Release Notes for details.

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