Extends from Modelica.Blocks.Interfaces.BlockIcon (Basic graphical layout of input/output block).

Parameters

Type	Name	Default	Description
Real	occupancy[:]	3600*{7,19}	Occupancy table, each entry switching occupancy on or off
Boolean	firstEntryOccupied	true	Set to true if first entry in occupancy denotes a changed from unoccupied to occupied
Time	startTime	0	Start time of periodicity [s]
Time	endTime	86400	End time of periodicity [s]

Connectors

Type	Name	Description
output RealOutput	tNexNonOcc	Time until next non-occupancy
output RealOutput	tNexOcc	Time until next occupancy
output BooleanOutput	occupied	Outputs true if occupied at current time

Modelica definition

block OccupancySchedule "Occupancy schedule with look-ahead"
  extends Modelica.Blocks.Interfaces.BlockIcon;

  parameter Real occupancy[:]=3600*{7, 19} 
    "Occupancy table, each entry switching occupancy on or off";
  parameter Boolean firstEntryOccupied = true 
    "Set to true if first entry in occupancy denotes a changed from unoccupied to occupied";
  parameter Modelica.SIunits.Time startTime = 0 "Start time of periodicity";
  parameter Modelica.SIunits.Time endTime =   86400 "End time of periodicity";

  Modelica.Blocks.Interfaces.RealOutput tNexNonOcc 
    "Time until next non-occupancy";
  Modelica.Blocks.Interfaces.RealOutput tNexOcc "Time until next occupancy";
  Modelica.Blocks.Interfaces.BooleanOutput occupied 
    "Outputs true if occupied at current time";

protected 
  final parameter Modelica.SIunits.Time period = endTime-startTime;
  final parameter Integer nRow = size(occupancy,1);

  output Integer nexStaInd "Next index when occupancy starts";
  output Integer nexStoInd "Next index when occupancy stops";

  output Integer iPerSta 
    "Counter for the period in which the next occupancy starts";
  output Integer iPerSto 
    "Counter for the period in which the next occupancy stops";
  output Modelica.SIunits.Time schTim 
    "Time in schedule (not exceeding max. schedule time)";
  output Modelica.SIunits.Time tMax "Maximum time in schedule";
  output Modelica.SIunits.Time tOcc "Time when next occupancy starts";
  output Modelica.SIunits.Time tNonOcc "Time when next non-occupancy starts";
initial algorithm 
  // Check parameters for correctness
 assert(mod(nRow, 2) < 0.1,
   "The parameter \"occupancy\" must have an even number of elements.\n");
 assert(startTime < occupancy[1],
   "The parameter \"startTime\" must be smaller than the first element of \"occupancy\"."
   + "\n   Received startTime    = " + String(startTime)
   + "\n            occupancy[1] = " + String(occupancy[1]));
 assert(endTime > occupancy[nRow],
   "The parameter \"endTime\" must be greater than the last element of \"occupancy\"."
   + "\n   Received endTime      = " + String(endTime)
   + "\n            occupancy[" + String(nRow) +
     "] = " + String(occupancy[nRow]));
  for i in 1:nRow-1 loop
    assert(occupancy[i] < occupancy[i+1],
      "The elements of the parameter \"occupancy\" must be strictly increasing.");
  end for;
 // Initialize variables
 // if the firstEntryOccupied == false, then set the current time to the
 // the time when occupancy starts.
 tOcc    :=if firstEntryOccupied then occupancy[1] else time;
 tNonOcc :=if firstEntryOccupied then time else occupancy[1];

 iPerSta   := 0;
 iPerSto   := 0;
 nexStaInd := if firstEntryOccupied then 1 else 2;
 nexStoInd := if firstEntryOccupied then 2 else 1;
 occupied := not firstEntryOccupied;
 tOcc    := occupancy[nexStaInd];
 tNonOcc := occupancy[nexStoInd];
algorithm 
  assert(startTime < endTime, "Wrong parameter values.");
  tMax :=endTime;
  schTim :=startTime + mod(time-startTime, period);

  // Changed the index that computes the time until the next occupancy
  when time >= pre(occupancy[nexStaInd])+ iPerSta*period then
    nexStaInd :=nexStaInd + 2;
    occupied := not occupied;
    // Wrap index around
    if nexStaInd > nRow then
       nexStaInd := if firstEntryOccupied then 1 else 2;
       iPerSta := iPerSta + 1;
    end if;
    tOcc := occupancy[nexStaInd] + iPerSta*(period);
  end when;

  // Changed the index that computes the time until the next non-occupancy
  when time >= pre(occupancy[nexStoInd])+ iPerSto*period then
    nexStoInd :=nexStoInd + 2;
    occupied := not occupied;
    // Wrap index around
    if nexStoInd > nRow then
       nexStoInd := if firstEntryOccupied then 2 else 1;
       iPerSto := iPerSto + 1;
    end if;
    tNonOcc := occupancy[nexStoInd] + iPerSto*(period);
  end when;

 tNexOcc    := tOcc-time;
 tNexNonOcc := tNonOcc-time;
end OccupancySchedule;

Buildings.Controls.SetPoints.Table

Information

Buildings.Controls.SetPoints.Table tabLinExt(constantExtrapolation=false, 
                                             table=[20, 0.0; 
                                                    22, 0.5; 
                                                    25, 0.5; 
                                                    26, 1.0]);
Buildings.Controls.SetPoints.Table tabConExt(constantExtrapolation=true, 
                                             table=[20, 0.0; 
                                                    22, 0.5; 
                                                    25, 0.5; 
                                                    26, 1.0]);

For the default setting constantExtrapolation=true, the block outputs y=y1+offset for u ≤ u1, and y=yMax+offset for u ≥ uMax. Otherwise, the table is linearly extrapolated with a constant derivative.

Note that the first column must be strictly increasing.

Extends from Modelica.Blocks.Interfaces.SISO (Single Input Single Output continuous control block).

Parameters

Type	Name	Default	Description
Real	table[:, 2]	fill(0.0, 1, 2)	Table matrix ( e.g., table=[u1, y1; u2, y2; u3, y3])
Real	offset	0	Offset of output signal
Boolean	constantExtrapolation	true	If true, then y=y1 for u<u1, and y=yMax for u>uMax

Connectors

Type	Name	Description
input RealInput	u	Connector of Real input signal
output RealOutput	y	Connector of Real output signal

Modelica definition

model Table 
  "Model for a set point that is interpolated based on a user-specified table"
  extends Modelica.Blocks.Interfaces.SISO;
  parameter Real table[:,2]=fill(0.0, 1, 2) 
    "Table matrix ( e.g., table=[u1, y1; u2, y2; u3, y3])";

  parameter Real offset=0 "Offset of output signal";

  parameter Boolean constantExtrapolation = true 
    "If true, then y=y1 for u<u1, and y=yMax for u>uMax";

protected 
  final parameter Integer nCol = if constantExtrapolation then 
                        size(table,1)+2 else 
                        size(table,1) "Number of columns";
  final parameter Real[nCol,2] offsetVector = [zeros(nCol), offset*ones(nCol)] 
    "Vector to take offset of output signal into account";
  Modelica.Blocks.Tables.CombiTable1D tab(
    tableOnFile=false,
    final table= (if constantExtrapolation then 
                    cat(1, [table[1,1]-1, table[1,2]],
                           table,
                           [table[end,1]+1, table[end,2]]) else 
                    table)
                  +offsetVector) "Table used for interpolation";
equation 
  connect(u, tab.u[1]);

  connect(tab.y[1], y);

end Table;