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| R2012a Documentation → Simscape | |
Learn more about Simscape |
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| Contents | Index |
This table summarizes what's new in Version 3.3 (R2010a):
| New Features and Changes | Version Compatibility Considerations | Fixed Bugs and Known Problems |
|---|---|---|
| Yes Details below | Yes Summary | Bug
Reports Includes fixes |
New features and changes introduced in this version are
Foundation library now contains magnetic domain and Magnetic block library. This library contains electromagnetic elements, such as reluctances, actuators, and electromagnetic converters, as well as magnetic sensors and sources.
Use these blocks to model magnetic circuits that can be represented by a one-dimensional flux flow, for example, solenoids and transformers.
Magnetic block models are based on the following assumptions:
The magnetic system is assumed lossless. You can model losses in interconnecting systems instead – in electric systems using resistors and in mechanical systems using friction.
Modeling of superconductors (with zero relative permeability) is not supported.
For more information see the block reference pages. See also for information on the magnetic domain definition. The Across variable is magnetomotive force (mmf), and the Through variable is flux. Note that these result in a pseudo-bond graph, because the product of mmf and flux is energy, not power.
You can now log simulation data to workspace for debugging and verification purposes. Data logging lets you analyze how internal block variables change with time during simulation. For example, you may want to see that the pressure in a hydraulic cylinder is above some minimum value, or compare it against the pump pressure. If you log simulation data to workspace, you can later query, plot, and analyze it without rerunning the simulation. For more information, see Data Logging.
Simscape error messages triggered by initial dynamic state inconsistencies and by nonlinear solver convergence failures are now more detailed. These messages report specific components of your models that may have caused the error.
You can now use a Jacobian method with an implicit Simulink solver in your Simscape models. You can choose a method yourself or allow Simulink to determine an appropriate Jacobian method for you. Depending on the sparsity pattern and number of states of your model, your simulation may be more efficient.
See Choosing a Jacobian Method for an Implicit Solver in the Simulink documentation.
If you have Symbolic Math Toolbox™ software, you can use the simscapeEquation function to generate Simscape language equations from symbolic expressions. For more information, see Generating Simscape Equations in the Symbolic Math Toolbox documentation.
Nonvirtual subsystems that support continuous states include Enabled subsystems and Atomic subsystems. These subsystems can contain Simscape blocks. However, physical connections and physical signals must not cross nonvirtual boundaries. For more information, see Restricted Simulink Tools.
Simscape solver no longer permits physical connections and physical signals to cross nonvirtual subsystem boundaries, because the semantics of these types of connections are unclear. If either a physical signal or a physical connection crosses a nonvirtual boundary, the solver issues an error upon simulation. To resolve the issue, place all blocks belonging to a given Physical Network in the same nonvirtual subsystem.
The documentation on Simscape model trimming and linearization has been revised and expanded. See Finding an Operating Point and Linearizing at an Operating Point.
The following demos have been added in Version 3.3:
Demo Name | Description |
Circuit Breaker | Implements a simple circuit breaker model. |
Solenoid with Magnetic Blocks | Shows how to model a solenoid using the electromagnetic blocks from the new Magnetic block library. |
 | Version 3.4 (R2010b) Simscape Software | Version 3.2 (R2009b) Simscape Software |  |
Learn more about Simulink through this collection of videos, articles, technical literature and the Getting Started with Simulink Guide.
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