blockHysteresis

Transform Real to Boolean signal with Hysteresis

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:

Hysteresis.png
  • 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

TypeNameDefaultDescription
RealuLowIf y=true and u<uLow, switch to y=false
RealuHighIf y=false and u>uHigh, switch to y=true
Booleanpre_y_startfalseValue of pre(y) at initial time

Connectors

TypeNameDefaultDescription
Blocks.Interfaces.RealInputu
Blocks.Interfaces.BooleanOutputy