PS Signal Specification

Specify size and unit of physical signal

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Libraries:
Simscape / Foundation Library / Physical Signals / Utilities

Description

The PS Signal Specification block lets you explicitly specify the size and unit of a physical signal. Use this block when the signal size and unit cannot be determined implicitly, based on port connections in the model.

The input signal at port I and the output signal at port O have the same size and unit. Both are determined by the value of the Signal size and unit parameter. Connect this block to untyped physical signal ports to specify the desired signal type.

Specify the signal size as zeros(m, n). For example, a scalar is zeros(1, 1).

The unit combo box includes a drop-down list of common units, such as those available in the Simulink-PS Converter and the PS-Simulink Converter block dialog boxes. It also contains a field where you can type a unit name or expression. For more information, see How to Specify Units in Block Dialogs.

Ports

Input

I — Input physical signal, typed by the block parameter value

physical signal

Input physical signal. The signal type (size and unit) is determined by the Signal size and unit parameter value.

The port name is not visible in the block icon, but you can see this name in the underlying source file by clicking the Source code link in the Description tab of the block dialog box.

Output

O — Output physical signal, typed by the block parameter value

physical signal

Output physical signal. The signal type (size and unit) is determined by the Signal size and unit parameter value.

The port name is not visible in the block icon, but you can see this name in the underlying source file by clicking the Source code link in the Description tab of the block dialog box.

Parameters

Signal size and unit — Size and unit of the input and output physical signal

zeros(1, 1) 1 (default)

The size and unit of the physical signal, to be propagated to untyped physical signal ports connected to the block.

The first edit box represents the signal size. Specify it as zeros(m, n). The default size, zeros(1, 1), is scalar.

The second combo box represents the signal unit. By default, the unit is 1 (unitless). You can select a unit from the drop-down list or type the desired unit name, such as rpm, or a valid expression, such as rad/s. For more information and a list of unit abbreviations, see How to Specify Units in Block Dialogs and Unit Definitions.

Extended Capabilities

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

Version History

Introduced in R2019a