自定义适用于 Simulink 的 System object

自定义 System object™ 以便在 MATLAB System 模块中使用

MATLAB System 模块支持在 Simulink^® 中将在 MATLAB^® 中定义的 System object 作为模块使用。要控制模块的外观或输出，或者要允许在 For Each 子系统中使用 System object，请使用所提供的实现方法对您的 System object 进行自定义。有关定义 System object 的详细信息，请参阅定义基本 System object 或 System object。

方法

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模块外观

`getIconImpl`	Name to display as block icon
`getHeaderImpl`	Header for System object display
`getInputNamesImpl`	Names of MATLAB System block input ports
`getOutputNamesImpl`	Names of MATLAB System block output ports
`getPropertyGroupsImpl`	Property groups for System object display
`getSimulateUsingImpl`	Specify value for Simulate using parameter
`showSimulateUsingImpl`	Visibility of Simulate using parameter
`showFiSettingsImpl`	Fixed point data type tab visibility for System objects

输入和输出

`allowModelReferenceDiscreteSampleTimeInheritanceImpl`	Model reference sample time inheritance status for discrete sample times
`getGlobalNamesImpl`	Global variable names for MATLAB System block
`getDiscreteStateImpl`	Discrete state property values
`getDiscreteStateSpecificationImpl`	Discrete state size, data type, and complexity
`getOutputDataTypeImpl`	Data types of output ports
`getOutputSizeImpl`	Sizes of output ports
`getSimulinkFunctionNamesImpl`	Register Simulink function names used in your System object
`getInterfaceImpl`	Set System object as message or data
`isOutputComplexImpl`	Complexity of output ports
`isOutputFixedSizeImpl`	Fixed- or variable-size output ports
`processTunedPropertiesImpl`	Action when tunable properties change
`propagatedInputComplexity`	Complexity of input during Simulink propagation
`propagatedInputDataType`	Data type of input during Simulink propagation
`propagatedInputFixedSize`	Fixed-size status of input during Simulink propagation
`propagatedInputSize`	Size of input during Simulink propagation

非直接馈通

`isInputDirectFeedthroughImpl`	Direct feedthrough status of input
`outputImpl`	Output calculation from input or internal state of System object
`updateImpl`	Update object states based on inputs

采样时间

`createSampleTime`	Create sample time specification object
`getSampleTimeImpl`	Specify sample time type, offset time, and sample time
`getSampleTime`	Query sample time
`getCurrentTime`	MATLAB System 模块中的当前仿真时间
`setNumTicksUntilNextHit`	Set the number of ticks in Simulink sample time

For Each 子系统

supportsMultipleInstanceImpl Support System object in Simulink For Each subsystem

类

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模块外观

`matlab.system.display.Icon`	Specify custom image as icon for MATLAB System block
`matlab.system.display.Action`	Create custom button in Block Parameters dialog box for MATLAB System block
`matlab.system.display.Header`	Specify header in Block Parameters dialog box for MATLAB System block
`matlab.system.display.Section`	Create property group section in Block Parameters dialog box for MATLAB System block
`matlab.system.display.SectionGroup`	Create nested groupings of properties in Block Parameters dialog box for MATLAB System block

主题

概述

Define System Object for Use in Simulink
Develop MATLAB System block and interactively preview block dialog box.
System Design in Simulink Using System Objects
Design systems in Simulink using System objects.
Simulink Engine Interaction with System Object Methods
Follow a process view of the order in which the MATLAB System block invokes System object methods within the context of the Simulink engine.
Considerations for Using System Objects in Simulink
Consider these guidelines when working with variable-size signals, tunable parameters, and For Each subsystems.

模块外观

Customize MATLAB System Icon and Dialog Box Using Mask Editor
Customize MATLAB System block appearance using Mask Editor graphical user interface.

输入和输出

Set Model Reference Discrete Sample Time Inheritance
Disallow model reference discrete sample time inheritance for a System object.
在系统对象中使用全局变量
定义在系统对象中使用的全局变量。
Specify Output
If Simulink cannot infer the System object output characteristics, add methods to specify the size, data type, complexity, or discrete state output.
Add and Implement Propagation Methods
To define output specifications, use propagation methods.

特殊用例

Use System Objects in Feedback Loops
Process nondirect feedthrough data through the System object.
Use Update and Output for Nondirect Feedthrough
Implement nondirect feedthrough for a System object using the updateImpl, outputImpl, and isInputDirectFeedthroughImpl methods.
Enable For Each Subsystem Support
Enable For Each subsystem support by using a System object in a Simulink For Each subsystem.
指定 MATLAB 系统模块系统对象的采样时间
此示例显示如何使用 System object™ 方法控制 MATLAB 系统模块的采样时间。