Add hysteresis to compare blocks in controllers

lbl-srg · Jul 26, 2023 · a099f95 · a099f95
1 parent 9655a7b
commit a099f95
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Showing 5 changed files with 73 additions and 73 deletions.
diff --git a/Buildings/Experimental/DHC/Plants/Combined/Controls/BaseClasses/CoolingTowerLoop.mo b/Buildings/Experimental/DHC/Plants/Combined/Controls/BaseClasses/CoolingTowerLoop.mo
@@ -1,4 +1,4 @@
-within Buildings.Experimental.DHC.Plants.Combined.Controls.BaseClasses;
+within Buildings.Experimental.DHC.Plants.Combined.Controls.BaseClasses;
 block CoolingTowerLoop "Cooling tower loop control"
 
   parameter Integer nCoo(final min=1, start=1)
@@ -142,7 +142,7 @@ block CoolingTowerLoop "Cooling tower loop control"
     yUp=0.8)
     "Stage pumps"
     annotation (Placement(transformation(extent={{100,50},{120,70}})));
-  Buildings.Controls.OBC.CDL.Continuous.GreaterThreshold cmpFlo(t=3)
+  Buildings.Controls.OBC.CDL.Continuous.GreaterThreshold cmpFlo(t=3, h=3e-3)
     "Flow criterion to enable lead pump"
     annotation (Placement(transformation(extent={{-160,-10},{-140,10}})));
   Buildings.Controls.OBC.CDL.Logical.Timer timFlo(t=60)
@@ -151,7 +151,7 @@ block CoolingTowerLoop "Cooling tower loop control"
   Buildings.Controls.OBC.CDL.Logical.Timer timFlo1(t=5*60)
     "Timer for flow exceeding triggering limit"
     annotation (Placement(transformation(extent={{-130,-50},{-110,-30}})));
-  Buildings.Controls.OBC.CDL.Continuous.LessThreshold cmpOpe(t=1)
+  Buildings.Controls.OBC.CDL.Continuous.LessThreshold cmpOpe(t=1, h=1e-3)
     "Valve opening criterion to enable lead pump"
     annotation (Placement(transformation(extent={{-160,-90},{-140,-70}})));
   Buildings.Controls.OBC.CDL.Logical.Timer timOpe(t=60)

diff --git a/Buildings/Experimental/DHC/Plants/Combined/Controls/BaseClasses/ModeCondenserLoop.mo b/Buildings/Experimental/DHC/Plants/Combined/Controls/BaseClasses/ModeCondenserLoop.mo
@@ -67,13 +67,13 @@ block ModeCondenserLoop
   Modelica.Blocks.Sources.RealExpression varCriWarUp(y=1 - fraChaTan.y)
     "Compute variable used to evaluate warmup criterion"
     annotation (Placement(transformation(extent={{-150,-90},{-130,-70}})));
-  Buildings.Controls.OBC.CDL.Continuous.Greater criWarUp
+  Buildings.Controls.OBC.CDL.Continuous.Greater criWarUp(h=1e-3)
     "Enable criterion based on time to warmup"
     annotation (Placement(transformation(extent={{-100,-90},{-80,-70}})));
   Buildings.Controls.OBC.CDL.Logical.And criWarUpAndChaLow
     "Both enable criteria met"
     annotation (Placement(transformation(extent={{-70,-90},{-50,-70}})));
-  Buildings.Controls.OBC.CDL.Continuous.LessThreshold criChaLow(t=0.97)
+  Buildings.Controls.OBC.CDL.Continuous.LessThreshold criChaLow(t=0.97, h=1e-3)
     "Low charge fraction criterion"
     annotation (Placement(transformation(extent={{-100,-130},{-80,-110}})));
   Buildings.Controls.OBC.CDL.Logical.Not enaFal[6]
@@ -89,7 +89,7 @@ block ModeCondenserLoop
     "Disable criterion based on flow rate"
     annotation (Placement(transformation(extent={{-100,50},{-80,70}})));
   Buildings.Controls.OBC.CDL.Continuous.GreaterThreshold criTem(t=max(TTanSet)
-         - 2)
+         - 2, h=1e-3)
     "Disable criterion based on temperature"
            annotation (Placement(transformation(extent={{-100,20},{-80,40}})));
   Buildings.Controls.OBC.CDL.Logical.And criFloAndTem

diff --git a/Buildings/Experimental/DHC/Plants/Combined/Controls/BaseClasses/StagingPump.mo b/Buildings/Experimental/DHC/Plants/Combined/Controls/BaseClasses/StagingPump.mo
@@ -37,7 +37,7 @@ block StagingPump "Pump staging"
         transformation(extent={{200,-20},{240,20}}), iconTransformation(extent={{100,40},
             {140,80}})));
 
-  Buildings.Controls.OBC.CDL.Continuous.GreaterThreshold cmp(final t=yUp)
+  Buildings.Controls.OBC.CDL.Continuous.GreaterThreshold cmp(final t=yUp, h=1e-3)
     "Compare"
     annotation (Placement(transformation(extent={{-100,-10},{-80,10}})));
   Buildings.Controls.OBC.CDL.Logical.Timer timSpe(t=5*60)
@@ -47,7 +47,7 @@ block StagingPump "Pump staging"
     final k=1/m_flow_nominal) if have_flowCriterion
     "Ratio of current flow rate to design value"
     annotation (Placement(transformation(extent={{-148,70},{-128,90}})));
-  Buildings.Controls.OBC.CDL.Continuous.Greater cmp2
+  Buildings.Controls.OBC.CDL.Continuous.Greater cmp2(h=1e-3)
     if have_flowCriterion
     "Compare"
     annotation (Placement(transformation(extent={{-100,90},{-80,110}})));
@@ -62,15 +62,15 @@ block StagingPump "Pump staging"
   Buildings.Controls.OBC.CDL.Logical.Or up
     "Check if flow or speed criterion passed for staging up"
     annotation (Placement(transformation(extent={{-30,-10},{-10,10}})));
-  Buildings.Controls.OBC.CDL.Continuous.Less cmp3
+  Buildings.Controls.OBC.CDL.Continuous.Less cmp3(h=1e-3)
     if have_flowCriterion
     "Compare"
     annotation (Placement(transformation(extent={{-100,50},{-80,70}})));
   Buildings.Controls.OBC.CDL.Logical.Timer timFlo1(t=10*60)
     if have_flowCriterion
     "Check if true for a given time"
     annotation (Placement(transformation(extent={{-72,50},{-52,70}})));
-  Buildings.Controls.OBC.CDL.Continuous.LessThreshold  cmp4(final t=yDow)
+  Buildings.Controls.OBC.CDL.Continuous.LessThreshold  cmp4(final t=yDow, h=1e-3)
     "Compare"
     annotation (Placement(transformation(extent={{-100,-50},{-80,-30}})));
   Buildings.Controls.OBC.CDL.Logical.Timer timSpe1(t=5*60) "True delay"