升级液压模型以使用 Isothermal Liquid 模块

将模型从使用液压域转换为使用等温液体域的可用资源

使用等温液体域组件对工作流体温度在仿真期间保持恒定的液压系统进行建模。 (自 R2020a 起)

升级旧版液压模型以使用 Isothermal Liquid 库模块。

本页列出的每个液压示例模型都有一个匹配的等温液体示例模型，列在等温液体系统下。您可以并排打开模型进行比较，也可以尝试转换任何液压模型并将结果与相应的等温液体示例模型进行比较。有关转换和清理其中一个模型的详细分步示例，请参阅 hydraulicToIsothermalLiquid。

主题

开始模型转换

Advantages of Using Isothermal Liquid Blocks
Blocks in the Isothermal Liquid library provide increased accuracy and numerical performance and are easier to use.
Upgrade Considerations When Converting Hydraulic to Isothermal Liquid Models
Learn about how to maintain the original model functionality after converting a model from hydraulic to isothermal liquid blocks by adjusting the blocks and block parameters.

转换模型

How to Upgrade Hydraulic Models
Learn how to use the hydraulicToIsothermalLiquid conversion tool and review the results.
Upgrading Systems with Enabled Library Links, Model References, and Subsystem References
Preserve the links between files in models that contain hydraulic blocks from custom Simulink^® libraries, referenced models, or subsystems.
Upgrading Custom Hydraulic Blocks to Use the Isothermal Liquid Domain
Rewrite underlying code of custom hydraulic blocks to convert them to isothermal liquid domain.

模块代换表和转换消息

Conversion Messages After Converting Hydraulic to Isothermal Liquid Models
Learn about warning messages in the HTML report and recommended actions when you upgrade your models using the hydraulicToIsothermalLiquid conversion tool.
Block Substitutions for Foundation Library Hydraulic Blocks
Learn about the block substitutions the hydraulicToIsothermalLiquid conversion tool makes for Simscape > Foundation Library > Hydraulic library blocks.

函数

`hydraulicToIsothermalLiquid`	升级液压模块图系统以使用等温液体模块 (自 R2020a 起)
`hydraulicToIsothermalLiquidPostProcess`	Restore original file names and links after upgrading hydraulic block diagram systems to use isothermal liquid blocks (自 R2021a 起)

Simscape 模块

Interface (H-IL)

Flow connection between hydraulic and isothermal liquid networks (自 R2020a 起)

精选示例

Hydraulic Actuator with Analog Position Controller

How the Foundation library can be used to model systems that span electrical, mechanical and hydraulic domains. In the model, a hydraulic system controls mechanical load position in response to a voltage reference demand. If the reference demand is zero, then the hydraulic actuator (and load) displacement is zero, and if the reference is +5 volts, then the displacement is 100mm.

打开模型

Hydraulic Actuator with Analog Position Controller and Dashboard Blocks

Use the Foundation library to model systems that span electrical, mechanical and hydraulic domains.

打开模型

Hydraulic Actuator with Digital Position Controller

A two-way valve acting in a closed-loop circuit together with a double-acting cylinder. The controller is represented as a continuous-time transfer function plus a transport delay. The delay allows for the computational time (one discrete time period) plus the zero-order hold (half a discrete time period) when implemented in discrete time. The model is configured for linearization so that a frequency response can be generated. To configure for faster desktop simulation, comment through the transport delay and increase the solver maximum step size.

打开模型

Hydraulic Actuator Configured for HIL Testing

A physical system model and controller configured for HIL testing. It is derived from example Hydraulic Actuator with Digital Position Controller, HydraulicActuatorWithDigitalPositionControllerHExample. The model has been configured for HIL testing by performing the following steps:

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Cavitation Cycle

How the fluid in a custom double acting cylinder can cavitate and recover. During the repeating cycle of oscillating pressure, the absolute pressure does not get below absolute zero as the bulk modulus of the homogeneous liquid-gas mixture decreases accordingly at low pressures.