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Tipos de datos

Asigne tipos de datos específicos a las señales y a los parámetros de los bloques; defina enumeraciones.

En los modelos, los tipos de datos determinan las interacciones entre las señales y los parámetros del bloque. Los tipos de datos numéricos determinan cómo un ordenador almacena las señales y los parámetros en la memoria y cómo realiza las operaciones matemáticas. Otros tipos de datos de Simulink^® determinan la estructura o los valores permitidos de las señales y los parámetros.

Para simular el comportamiento matemático del hardware del ordenador, o para generar un código eficiente a partir de un modelo, puede controlar los tipos de datos numéricos de las señales y los parámetros. Puede especificar tipos de punto flotante, entero, punto fijo y otros tipos numéricos. Consulte Data Types Supported by Simulink.

Los tipos de datos enumerados permiten que las señales y los parámetros utilicen solo un conjunto de valores especificado por un usuario. Puede mejorar la legibilidad del modelo proporcionando un nombre significativo a cada valor enumerado. Para utilizar enumeraciones en Simulink, consulte Use Enumerated Data in Simulink Models.

Puede utilizar los tipos de bus para agrupar varias señales o parámetros, lo que puede mejorar la legibilidad del modelo y facilitar su mantenimiento. Consulte Specify Bus Properties with Bus Objects.

Puede utilizar los tipos de cadena para utilizar fácilmente las cadenas en los modelos.

Bloques

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Tipos de datos

Block Support Table	View data type support for Simulink blocks
Data Type Conversion	Convert input signal to specified data type
Data Type Conversion Inherited	Convert from one data type to another using inherited data type and scaling
Data Type Duplicate	Force all inputs to same data type
Data Type Propagation	Set data type and scaling of propagated signal based on information from reference signals
Data Type Scaling Strip	Remove scaling and map to built in integer

Cadenas

ASCII to String	Uint8 vector signal to string signal
Compose String	Compose output string signal based on specified format and input signals
Scan String	Scan input string and convert to signals per specified format
String Compare	Compare two input strings
String Concatenate	Concatenate input strings to form one output string
String Constant	Output specified string
String Contains	Determine if string contains, starts with, or ends with pattern (desde R2020a)
String Count	Count occurrences of pattern in string (desde R2020a)
String Find	Return index of first occurrence of pattern string
String Length	Output number of characters in input string
String to ASCII	Convert string signal to uint8 vector
String to Double	Convert string signal to double signal
String to Enum	Input string signal to enumerated signal
String to Single	Convert string signal to single signal
Substring	Extract substring from input string signal
To String	Convert input signal to string signal

Funciones

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Enumeraciones

`enumeration`	Class enumeration members and names
`Simulink.defineIntEnumType`	Define enumerated data type
`Simulink.findIntEnumType`	Find enumeration classes defined by `Simulink.defineIntEnumType`
`Simulink.clearIntEnumType`	Delete enumeration classes defined by `Simulink.defineIntEnumType`
`Simulink.data.getEnumTypeInfo`	Get information about enumerated data type
`Simulink.data.isSupportedEnumClass`	Determine whether an enumeration class is valid for Simulink
`Simulink.data.isSupportedEnumObject`	Determine whether an enumeration object is valid for Simulink

Tipos de datos numéricos y de punto fijo

`fixdt`	Create `Simulink.NumericType` object describing a fixed-point or floating-point data type
`fixpt_evenspace_cleanup`	Modify breakpoints of lookup table to have even spacing
`fixpt_look1_func_approx`	Optimize fixed-point approximation of nonlinear function by interpolating lookup table data points
`fixpt_look1_func_plot`	Plot fixed-point approximation function for lookup table
`fixpt_set_all`	Set property for each fixed-point block in subsystem
`fixptbestexp`	Exponent that gives best precision for fixed-point representation of value
`fixptbestprec`	Determine maximum precision available for fixed-point representation of value
`Simulink.importExternalCTypes`	Generate Simulink representations of custom data types defined by C or C++ code
`tunablevars2parameterobjects`	Create Simulink parameter objects from tunable parameters

Cadenas

stringtype Create string data type

Tipos de datos

`showblockdatatypetable`	Display HTML page of Simulink block data type support
`Simulink.Block.getInternalDataType`	Get data type of block parameter (desde R2023a)

Clases

`Simulink.AliasType`	Create alias for signal and parameter data type
`Simulink.NumericType`	Specify floating-point, integer, or fixed-point data type

Ajustes de modelos

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Panel de matemáticas y tipos de datos

Simulation behavior for denormal numbers	Emulate hardware handling of denormal numbers
Use algorithms optimized for row-major array layout	Enable algorithm for row-major format code generation and simulation
Default for underspecified data type	Data type to use when Simulink cannot infer the data type
Use division for fixed-point net slope computation	How net slope computations are performed when a change of fixed-point slope is not a power of two
Gain parameters inherit a built-in integer type that is lossless	Parameter data type for Gain blocks that inherit via internal rule
Use floating-point multiplication to handle net slope corrections	Net slope correction computation for floating-point to fixed-point casts
Inherit floating-point output type smaller than single precision	Inherited output data type behavior when block inputs are floating-point data types smaller than single precision (desde R2021a)
Application lifespan (days)	Duration in days before timer overflow occurs
Clock resolution	Simulate target platform clock resolution (desde R2023a)
Implement logic signals as Boolean data (vs. double)	Logic signal data type

Temas

Validate a Floating-Point Embedded Model
Use simulation to verify that a control algorithm can continue to meet application requirements while using single-precision floating-point data types.
Control Data Types of Signals
Apply data types other than double to signals in a model.
Specify Fixed-Point Data Types
If you do not have Fixed-Point Designer™, you can still inspect and use fixed-point models that others share with you.
Data Type Inheritance Rules in Simulink
Understand rules for automated output data type selection in Simulink for fixed-point data types.
Specify Data Types Using Data Type Assistant
Interactively apply data types, such as integer, fixed-point, and enumerated types, to data items in a model.
Use Enumerated Data in Simulink Models
Create and use enumerations in Simulink models.
Simulink Strings
Use strings in models.
About Data Types in Simulink
Data items (signals, block parameters, and states) in a model have a data type, such as int8, which determines how a computer represents the data in memory.
Data Types Supported by Simulink
Simulink supports many floating-point, integer, fixed-point, Boolean, and other data types.
Specify Bus Properties with Bus Objects
Create a reusable bus definition to specify as a data type for a bus.
Simulink Enumerations
Enumerated data is data that is restricted to a finite set of values. Simulink models can use an enumeration as a data type.

Información relacionada

Punto fijo

Ejemplos destacados

Data Typing in Simulink

Use data types in Simulink®. The model used in this example converts a double-precision sine wave having an amplitude of 150 to various data types and displays the converted signals on two scopes.

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Filter Signals with Different Data Types

Use Simulink to filter signals that have different data types.

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