Simulationsaufbau
Sie wählen über Simulink® globale oder modellweite Solver aus, indem Sie die Modellkonfigurationsparameter verwenden. Sie können für Teile des Systems auch einen lokalen Simscape™-Solver verwenden und andere Optionen im Block Solver Configuration anpassen. Die empfohlenen Optionen sind in Making Optimal Solver Choices for Physical Simulation beschrieben.
Apps
| Simscape Variable Scaling Analyzer | Resolve variable scaling issues and improve simulation speed of Simscape models (Seit R2021b) |
Modelleinstellungen
| Explicit solver usedin model containing Physical Networks blocks | Option to issue warning or error if model uses explicit solver for simulation |
| Zero-crossing controlis globally disabled in Simulink | Option to issue warning or error if zero-crossing control is globally disabled during simulation |
| Normalize usingnominal values | Option to specify whether to scale the system based on nominal values |
| Specify nominalvalues | Option to view, add, and edit value-unit pairs of model nominal values |
Themen
- Setting Up Solvers for Physical Models
Explains how to harmonize global, or model-wide, Simulink solvers with local Simscape solvers for physical simulation.
- Important Concepts and Choices in Physical Simulation
Provides background information on advanced concepts and trade-offs to consider when you select solvers and configure other simulation settings.
- Making Optimal Solver Choices for Physical Simulation
Detailed how-to information on solver selection for physical simulation.
- Best Practices for Simulating with the daessc Solver
Detailed how-to information and best practices on using
daesscsolver for physical simulation. - Understanding How the Partitioning Solver Works
Detailed explanation of how the Partitioning solver formulates the equations and why it is much faster than the other solvers.
- Filtering Input Signals and Providing Time Derivatives
Ways to provide time derivatives of the input signals, required by the selected solver, and benefits of input filtering.
- System Scaling by Nominal Values
Improve simulation robustness by providing scale of variables to solver.
- Use Scaling by Nominal Values to Improve Performance
Example of applying scaling by nominal values to improve simulation robustness.
- Select Nominal Values Using the Variable Scaling Analyzer
Improve Simscape model convergence by analyzing for problematic variable scaling.
- Frequency and Time Simulation Mode
Increase simulation speed for systems with a single base frequency.
- Identify and Resolve System Stiffness in Simscape Models
Analyze the effect of particular block variables on overall system stiffness of a Simscape network.
Verwandte Informationen
Enthaltene Beispiele
Nonlinear Electromechanical Circuit with Partitioning Solver
Models a DC Motor controlled by a ramp input. The resulting system of equations contains switched linear and nonlinear elements brought about by the Diode and Rotational Friction blocks respectively. However, the Partitioning solver is able to convert this system into several smaller sets of linear time-invariant and switched linear equations connected by nonlinear functions. This helps in reducing computational cost, which in turn yields faster simulation.
