物理建模

使用 Simscape™ 软件进行物理系统建模

要在 Simulink^® 环境中进行物理系统建模，请考虑使用 Simscape 软件。

Simscape 对 Simulink 进行了扩展，提供了工具以用于对涵盖机械、电气、液压和其他物理领域的系统进行建模。它提供了这些领域的基本构建模块，您可以基于这些模块创建自定义组件模型。使用基于 MATLAB^® 的 Simscape 语言，您可以文本方式创建物理建模组件、域和库。

主题

Basic Principles of Modeling Physical Networks (Simscape)
Describes concepts behind the Physical Network approach, Through and Across variables, and physical connections.
构造物理模型的基本步骤 (Simscape)
此示例包含构建和仿真简单物理模型的基本工作流和详细说明。
Essential Physical Modeling Techniques (Simscape)
Brief summary of physical modeling rules and techniques.
Modeling Best Practices (Simscape)
How to use best practices in your model architecture to avoid numerical simulation issues.

精选示例

Simulink 和 Simscape 中的双质量-弹簧-阻尼系统

此示例展示了两个双质量-弹簧-阻尼系统模型，一个使用 Simulink® 输入/输出模块，一个使用 Simscape™ 物理网络。

永磁直流电机

此模型基于 Faulhaber 系列 0615 直流微型电机。参数值被设置为匹配此电机的 1.5V 变体。该模型使用这些参数来校验制造商提供的空载转速、空载电流和堵转转矩。

Brayton Cycle (Gas Turbine) with Custom Components

Models a gas turbine auxiliary power unit (APU) based on the Brayton Cycle. The Compressor and Turbine blocks are custom components based on the Simscape™ Foundation Gas Library. The power input to the system is represented by heat injection into the combustor; actual combustion chemistry is not modeled. A single shaft connects the compressor and the turbine so that the power from the turbine drives the compressor. The APU is a free turbine that further expands the exhaust stream to produce output power.

Two-Phase Fluid Refrigeration

Models a vapor-compression refrigeration cycle using two-phase fluid components. The compressor drives the R-134a refrigerant through a condenser, an expansion valve, and an evaporator. The hot gas leaving the compressor condenses in the condenser via heat transfer to the environment. The pressure drops as the refrigerant passes through the expansion valve. The drop in pressure lowers the saturation temperature of the refrigerant. This enables it to boil in the evaporator as it absorbs heat from the refrigerator compartment. The refrigerant then returns to the compressor to repeat the cycle. The controller turns the compressor on and off to maintain the refrigerator compartment temperature within a band around the desired temperature.