blockHysteresisVariableLowerBound
Hysteresis with a variable lower Boundary
Extends from Modelica.Blocks.Icons.PartialBooleanBlock (Basic graphical layout of logical block).
Information
This block transforms a Real input signal u into a Boolean output signal y:
- When the output was false and the input becomes greater than parameter uHigh, the output switches to true.
- When the output was true and the input becomes less than parameter uLow, the output switches to false.
The start value of the output is defined via parameter pre_y_start (= value of pre(y) at initial time). The default value of this parameter is false.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Real | uHigh | If y=false and u>uHigh, switch to y=true | |
| Boolean | pre_y_start | false | Value of pre(y) at initial time |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Blocks.Interfaces.RealInput | uLow | Lower boundary of hysteresis curve | |
| Modelica.Blocks.Interfaces.RealInput | u | Input variable | |
| Modelica.Blocks.Interfaces.BooleanOutput | y | output Boolean |
Revisions
-
December 22, 2025 by Fabian Roemer:
First implementation (see issue AixLib #1623)