Unit Conversion

R2026b

Convert units

• 

Unit Conversion block

To add a block to a model, double-click the canvas and start typing the block name. Then, select the block from the list.

Libraries:
Simulink / Signal Attributes

Description

The Unit Conversion block converts the unit of the input signal to the output signal. The block can perform the conversion if the units are separated by a scaling factor or offset, or are inverse units, for example:

• y = a*U

• y = a*U+b, where a is the scale and b is the offset

• y = a/U

This block supports normal, accelerator, and rapid accelerator modes and fast restart.

Examples

Temperature Measurement System Using Nonlinear Behavioral Data of Type S Thermocouple

Build and simulate a temperature measurement system that uses a nonlinear dataset describing the behavior of a type S thermocouple.

• Open Model

Model an Automatic Transmission Controller

Model an automotive drivetrain using Simulink®. In this model, a Stateflow® chart implements the transmission control logic and integrates directly with the Simulink model, combining control logic and drivetrain dynamics in a clear and intuitive structure.

• Open Model

Ports

Input

Port_1 — Input signal

scalar | vector | matrix | N-D array

Input signal, specified as a scalar, vector, matrix, or N-D array.

Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | fixed point

Output

Port_1 — Output signal

scalar | vector | matrix | N-D array

Output signal with converted units with the same dimensions as the input signal.

Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | fixed point

Parameters

Output data type — Output data type

Inherit: Inherit via internal rule (default) | Inherit: Inherit via back propagation

Specify the output data type.

• Inherit: Inherit via internal rule — Simulink^® chooses intermediate and output data types to balance numerical accuracy, performance, and generated code size, while accounting for the properties of the embedded target hardware. If you change the embedded target settings, the data type selected by the internal rule might change.

• Inherit: Inherit via back propagation — Output data type is inherited via back propagation. Internal rules determine the intermediate data types and Simulink casts the final results to the output data type.

Programmatic Use

Block Parameter: OutputType

Type: character vector

Values: 'Inherit via internal rule' | 'Inherit via back propagation'

Default: 'Inherit via internal rule'

Block Characteristics

Data Types	double | fixed point | integer | single
Direct Feedthrough	yes
Multidimensional Signals	yes
Variable-Size Signals	yes
Zero-Crossing Detection	no

Programmatic Use: Add Block

To add the block programmatically, use the add_block function with one of these library block paths as the source.

"simulink/Signal Attributes/Unit Conversion"

Example: add_block("simulink/Signal Attributes/Unit Conversion","myModel/myBlock",MakeNameUnique="on")

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

Fixed-Point Conversion
Design and simulate fixed-point systems using Fixed-Point Designer™.

Version History

Introduced in R2016a