DIAGNOSTIC METHOD FOR DETECTING DISCONTINUITIES IN A CONTINUOUS MEASUREMENT VARIABLE AND CONTROLLER FOR CARRYING OUT THE METHOD

A diagnostic method for detecting discontinuities in a continuous measurement variable, comprising: capturing an input signal (I), testing a discontinuity criterion (BD) on the basis of the input signal (I), when the discontinuity criterion (BD) is met, enabling a diagnosis, comprising: capturing th...

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Bibliographische Detailangaben
Hauptverfasser:	PANKRATZ, Kirsten, FRÖHLICH, Björn, SCHRÖDER, Ulrich
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS BLASTING COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MACHINES OR ENGINES IN GENERAL MEASURING MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR MECHANICAL ENGINEERING PHYSICS STEAM ENGINES TARIFF METERING APPARATUS TESTING WEAPONS
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Beschreibung
Zusammenfassung:	A diagnostic method for detecting discontinuities in a continuous measurement variable, comprising: capturing an input signal (I), testing a discontinuity criterion (BD) on the basis of the input signal (I), when the discontinuity criterion (BD) is met, enabling a diagnosis, comprising: capturing the input signal (I) within a transit time (T) starting from a point in time (t0), defining the input signal (l0) at the point in time t0 of the transit time (T) as a reference value (R) starting from an initial reference position (R0), determining the profile of a relative diagnostic variable (IR) by shifting the profile of the input signal (I) by the reference difference (RD) between the initial reference position (R0) and the reference value (R), wherein the profile of the relative diagnostic variable (IR) is increased by the reference difference (RD) if the reference value (l0; R) is lower than the initial reference value (R0), and is decreased by the reference difference (RD) if the reference value (l0; R) is higher than the initial reference value (R0); comparing the profile of the relative diagnostic variable (IR) with a diagnostic threshold (D), and testing an error criterion (FK), according to which the relative diagnostic variable (IR) exceeds the diagnostic threshold (D). The invention further relates to a controller (9) for carrying out the diagnostic method and to a vehicle (100) having such a controller (9).