仿真设置
您可以使用模型配置参数通过 Simulink® 选择全局或模型范围的求解器。还可以对系统的某些部分使用局部 Simscape™ 求解器，以及调整 Solver Configuration 模块中的其他选项。有关建议使用的选项，请参阅Making Optimal Solver Choices for Physical Simulation。
App
| Simscape 变量缩放分析器 | Resolve variable scaling issues and improve simulation speed of Simscape models (自 R2021b 起) |
模型设置
| 在包含物理网络模块的模型中使用显式求解器 | Option to issue warning or error if model uses explicit solver for simulation |
| 已在 Simulink 中全局禁用过零控制 | Option to issue warning or error if zero-crossing control is globally disabled during simulation |
| 使用标称值进行归一化 | Option to specify whether to scale the system based on nominal values |
| 指定标称值 | Option to view, add, and edit value-unit pairs of model nominal values |
主题
- 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.
- Simscape Stiffness Impact Analysis
Analyze the effect of particular block variables on overall system stiffness of a Simscape network.
精选示例
带分区求解器的非线性机电电路
此示例对由斜坡输入控制的 DC 电机进行建模。由于 Diode 和 Rotational Friction 模块的作用，所得到的方程组包含切换线性和非线性部分。但是，分区求解器能够将该系统转换为若干较小的由非线性函数连接的线性时不变和切换线性方程。这有助于降低计算成本，从而加快仿真速度。
