Service information derived from elevator operational parameters

The floors at which related notable elevator features occur are compared to determine a floor factor, F, depending on whether the notable feature occurs only at one floor or at more than one floor. Estimated probabilities, P'(S/C), that any component, C, will result in a symptom, S, (where S =...

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Bibliographische Detailangaben
Hauptverfasser:	BARREIRO, JUAN A. LENCE, MASHIAK, ROBERT H, PEPIN, RONALD R, FREELAND, GARY L, MOON, CHOUHWAN, HUANG, HARRY Z
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ELEVATORS ESCALATORS OR MOVING WALKWAYS HAULING HOISTING LIFTING PERFORMING OPERATIONS TRANSPORTING
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	The floors at which related notable elevator features occur are compared to determine a floor factor, F, depending on whether the notable feature occurs only at one floor or at more than one floor. Estimated probabilities, P'(S/C), that any component, C, will result in a symptom, S, (where S = first and second notable features in a related group and the accompanying floor factor, F) are provided by experts; the probability of P'(C) of any failure being of any given component is determined from failure history; and an estimated probability, P'(C/S), that system S is caused by component C is given by P ² ( S / C ) P ( C ) P ² ( S / C ) P ( C ) . c