blockVerifyDifferenceThreePeriods

Assert when condition is violated

Information

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

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

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

Type	Name	Description
Modelica.Blocks.Interfaces.RealInput	u1 (from PartialInputCheck)	Value to check
Modelica.Blocks.Interfaces.RealInput	u2 (from PartialInputCheck)	Value to check
Modelica.Blocks.Interfaces.BooleanOutput	satisfied
Modelica.Blocks.Interfaces.RealOutput	diff	Difference u1-u2

September 7, 2018, by Michael Wetter:
Rewrote inequality to turn a state into a time event for Dymola 2019FD01.
December 16, 2016, by Michael Wetter:
Reformulated model for https://github.com/ibpsa/modelica-ibpsa/issues/623.
October 10, 2013, by Michael Wetter:
Reformulated model to allow scheduling of time events as opposed to state events, and removed noEvent operator which is not needed as these are only time events.
June 29, 2016, by Moritz Lauster:
First implementation.