Unit Conversion

Convert units

• 

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

Approximating Nonlinear Relationships: Type S Thermocouple

Approximate nonlinear relationships of a type S thermocouple.

• Open Model

Model an Automatic Transmission Controller

Model an automotive drivetrain with Simulink®. Stateflow® enhances the Simulink model with its representation of the transmission control logic. Simulink provides a powerful environment for the modeling and simulation of dynamic systems and processes. In many systems, though, supervisory functions like changing modes or invoking new gain schedules must respond to events that may occur and conditions that develop over time. As a result, the environment requires a language capable of managing these multiple modes and developing conditions. In the following example, Stateflow shows its strength in this capacity by performing the function of gear selection in an automatic transmission. This function is combined with the drivetrain dynamics in a natural and intuitive manner by incorporating a Stateflow block in the Simulink block diagram.

• 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: OutDataTypeStr

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

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