Buildings.Controls.Discrete

Information

Extends from Modelica.Icons.VariantsPackage (Icon for package containing variants).

Package Content

Name	Description
BooleanDelay	Zero order hold for boolean variable
Examples	Collection of models that illustrate model use and test models

Buildings.Controls.Discrete.BooleanDelay

Information

Block that delays the boolean input signal by one sampling interval. For example, if u denotes the input, y denotes the output, and t_i and t_i+1 denote subsequent sampling instants, then the model outputs

y(t_i+1) = u(t_i).

Extends from Modelica.Blocks.Interfaces.BooleanSISO (Single Input Single Output control block with signals of type Boolean), Modelica.Blocks.Interfaces.DiscreteBlock (Base class of discrete control blocks).

Parameters

Type	Name	Default	Description
Time	samplePeriod		Sample period of component [s]
Time	startTime	0	First sample time instant [s]

Connectors

Type	Name	Description
input BooleanInput	u	Connector of Boolean input signal
output BooleanOutput	y	Connector of Boolean output signal

Modelica definition

block BooleanDelay "Zero order hold for boolean variable"
  extends Modelica.Blocks.Interfaces.BooleanSISO;
  extends Modelica.Blocks.Interfaces.DiscreteBlock;
protected 
  Boolean ySample;
algorithm 
  when {sampleTrigger, initial()} then
    y := ySample;
    ySample := u;
  end when;

end BooleanDelay;