Generate constant physical signal
Simscape / Foundation Library / Physical Signals / Sources
The PS Constant block generates a physical signal of a constant value. You specify the value and unit of the signal as the Constant parameter.
O— Output physical signal, typed by the block parameter value
Output physical signal. The signal value and unit are determined by the value and unit of the Constant parameter.
The port name is not visible in the block icon, but you can see this name in the underlying source file (accessible by clicking the Source code link in the block dialog box).
Constant— Signal value and unit
The value and unit of the output signal at port O. The first edit box represents the signal value. You can specify both positive and negative values.
The second combo box represents the unit of the output signal. By default, the unit
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
rad/s. For more information and a list of unit abbreviations, see
How to Specify Units in Block Dialogs
and Unit Definitions.
Behavior changed in R2019a
Prior to R2019a, this block did not propagate physical units.
If your model contains legacy blocks without unit propagation, use the Upgrade Advisor to upgrade your blocks to the latest version. For more information, see Upgrading Models with Legacy Physical Signal Blocks.