Version 3.5, part of Release 2011a, includes the following enhancements:

• Hydraulic source blocks for modeling constant flow rate and constant pressure
• Simulation diagnostics improvements that aid debugging by indicating specific equations in Simscape language file
• Scalability improvements, accelerating simulations of larger systems
• Algorithm improvements for algebraic loop detection and zero-crossing robustness

See the Release Notes for details.

Version 3.4, part of Release 2010b, includes the following enhancements:

• New plot and plotxy commands for simplifying plotting of logged physical network data
• Enhanced zero-crossing handling and diagnostics
• Support for C++ code generation

See the Release Notes for details.

Version 3.3, part of Release 2010a, includes the following enhancements:

• Ability to automatically log all variables in a physical network to the MATLAB workspace
• New Magnetic libraries for modeling electromagnetic systems
• Improved simulation diagnostics that aid debugging by providing links to blocks in the model
• Increased speed for large models during simulation
• Ability to use Simscape language equations exported from Symbolic Math Toolbox

See the Release Notes for details.

Version 3.2, part of Release 2009b, includes the following enhancements:

• Local solver support for each Physical Network
• New Pneumatic libraries for simulating pneumatic systems based on ideal gas laws
• Enhanced Simscape language, enabling the definition of intermediate terms in equations
• Full support for Accelerator mode and code generation for referenced models
• Model reference protected mode, enabling sharing of models for simulation without exposing contents (requires Simulink Coder)

See the Release Notes for details.

Version 3.1, part of Release 2009a, includes the following enhancements:

• Ability to protect Simscape™ language files, enabling model sharing without disclosing the component or domain source code
• Support in the MATLAB Editor for syntax highlighting of Simscape files
• Viewable and customizable Simscape language source files for many Foundation library components
• Three new Physical Signal blocks that facilitate rounding
• Ability to use Model Reference Accelerator Mode for simulation in Simscape and its vertical products

See the Release Notes for details.