Estimating the remaining useful life for cooling fans based on a wear-out index analysis

The disclosed embodiments provide a system that estimates a remaining useful life (RUL) for a fan. During operation, the system receives telemetry data associated with the fan during operation of the critical asset, wherein the telemetry data includes a fan-speed signal. Next, the system uses the te...

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Bibliographic Details
Main Authors McElfresh, David K, Bougaev, Anton A, Gross, Kenny C, Urmanov, Aleksey M
Format Patent
LanguageEnglish
Published 21.02.2023
Subjects
CALCULATING
CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS
COMPUTING
CONTROL OR REGULATING SYSTEMS IN GENERAL
CONTROLLING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
FUNCTIONAL ELEMENTS OF SUCH SYSTEMS
MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS
PHYSICS
PRINTED CIRCUITS
REGULATING
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Summary:The disclosed embodiments provide a system that estimates a remaining useful life (RUL) for a fan. During operation, the system receives telemetry data associated with the fan during operation of the critical asset, wherein the telemetry data includes a fan-speed signal. Next, the system uses the telemetry data to construct a historical fan-speed profile, which indicates a cumulative time that the fan has operated in specific ranges of fan speeds. The system then computes an RUL for the fan based on the historical fan-speed profile and empirical time-to-failure (TTF) data, which indicates a TTF for the same type of fan as a function of fan speed. Finally, when the RUL falls below a threshold, the system generates a notification indicating that the fan needs to be replaced.
Bibliography:Application Number: US202217688150