Annex60.ThermalZones.ReducedOrder.Validation.VDI6007.BaseClasses

Name	Description
VerifyDifferenceThreePeriods	Assert when condition is violated

Block that outputs satisfied = false if abs(u1-u2) > threShold within the prescribed time intervals, or satisfied = true otherwise.

Implementation

The test uses a hysteresis of plus/minus 1% in order to avoid chattering if abs(u1-u2) is near threShold.

Parameters

Connectors

Modelica definition

Type	Name	Default	Description
Time	startTime	0	Start time for activating the assert [s]
Real	threShold	1E-2	Threshold for equality comparison
String	message	"Inputs differ by more than ...
Time	endTime	0	Start time for deactivating the assert (period one) [s]
Time	startTime2	0	Start time for activating the assert (period two) [s]
Time	endTime2	0	Start time for deactivating the assert (period two) [s]
Time	startTime3	0	Start time for activating the assert (period three) [s]
Time	endTime3	0	Start time for deactivating the assert (period three) [s]

Type	Name	Description
input RealInput	u1	Value to check
input RealInput	u2	Value to check
output BooleanOutput	satisfied
output RealOutput	diff	Difference u1-u2

block VerifyDifferenceThreePeriods "Assert when condition is violated" extends Annex60.Utilities.Diagnostics.BaseClasses.PartialInputCheck( message="Inputs differ by more than threShold.\n Check output 'satisfied' for when violation(s) happened."); parameter Modelica.SIunits.Time endTime = 0 "Start time for deactivating the assert (period one)"; parameter Modelica.SIunits.Time startTime2 = 0 "Start time for activating the assert (period two)"; parameter Modelica.SIunits.Time endTime2 = 0 "Start time for deactivating the assert (period two)"; parameter Modelica.SIunits.Time startTime3 = 0 "Start time for activating the assert (period three)"; parameter Modelica.SIunits.Time endTime3 = 0 "Start time for deactivating the assert (period three)"; Modelica.Blocks.Interfaces.BooleanOutput satisfied(start=true, fixed=true); Modelica.Blocks.Interfaces.RealOutput diff "Difference u1-u2"; protected parameter Modelica.SIunits.Time t1(fixed=false) "Simulation end time period one"; parameter Modelica.SIunits.Time t3(fixed=false) "Simulation end time period two"; parameter Modelica.SIunits.Time t5(fixed=false) "Simulation end time period three"; parameter Modelica.SIunits.Time t2(fixed=false) "Simulation start time period two"; parameter Modelica.SIunits.Time t4(fixed=false) "Simulation start time period three"; Integer nFai "Number of test violations"; initial equation t1 = time + endTime; t2 = time + startTime2; t3 = time + endTime2; t4 = time + startTime3; t5 = time + endTime3; nFai = 0; equation if (time >= t0) and (time <= t1) or (time >= t2) and (time <= t3) or (time >= t4) and (time <= t5) then diff = abs(u1 - u2); else diff = 0; // Test is not needed in this time domain end if; // Output whether test is satisfied, using a small hysteresis that is scaled using threShold satisfied = not ( (pre(satisfied) and diff > 1.01*threShold) or (not pre(satisfied) and diff >= 0.99*threShold)); // Count the number of failures and raise an assertion in the terminal section. // This ensures that if the model is in an FMU, no asserts are triggered during // the solver iterations. when not satisfied then nFai = pre(nFai) + 1; end when; when terminal() then assert(nFai == 0, message); end when; end VerifyDifferenceThreePeriods;