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1. WO2022026079 - FLEET LEVEL PROGNOSTICS FOR IMPROVED MAINTENANCE OF VEHICLES

Publication Number WO/2022/026079
Publication Date 03.02.2022
International Application No. PCT/US2021/038036
International Filing Date 18.06.2021
IPC
G05B 23/02 2006.1
GPHYSICS
05CONTROLLING; REGULATING
BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
23Testing or monitoring of control systems or parts thereof
02Electric testing or monitoring
CPC
G05B 23/0221
GPHYSICS
05CONTROLLING; REGULATING
BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
23Testing or monitoring of control systems or parts thereof
02Electric testing or monitoring
0205by means of a monitoring system capable of detecting and responding to faults
0218characterised by the fault detection method dealing with either existing or incipient faults
0221Preprocessing measurements, e.g. data collection rate adjustment; Standardization of measurements; Time series or signal analysis, e.g. frequency analysis or wavelets; Trustworthiness of measurements; Indexes therefor; Measurements using easily measured parameters to estimate parameters difficult to measure; Virtual sensor creation; De-noising; Sensor fusion; Unconventional preprocessing inherently present in specific fault detection methods like PCA-based methods
Applicants
  • NORTHROP GRUMMAN SYSTEMS CORPORATION [US]/[US]
Inventors
  • DIXIT, Sunil
Agents
  • GILLEN, Gary, R.
  • MCCRACKEN, William, E.
  • TOLOMEI, John, G.
  • ASARIA, Riyazhassan, M.
  • FRANK, J., William
Priority Data
16/945,26331.07.2020US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) FLEET LEVEL PROGNOSTICS FOR IMPROVED MAINTENANCE OF VEHICLES
(FR) PRONOSTICS DE NIVEAU DE FLOTTE POUR L’ENTRETIEN AMÉLIORÉ DE VÉHICULES
Abstract
(EN) A ground-based computing system receives data of performance parameters for like components disposed on like aircraft, and determines corresponding levels of degradation and rates of change of degradation for the respective like components. A fleet-level of degradation for groups of like components is generated based on analysis of the combined degradations of the like components in the respective group. At least one of a remaining useful lifetime (RUL) and a state-of-health (SOH) for each of the respective like components is determined based on a comparison of the levels of degradation for each of the like components and the fleet-level of degradation of the group of like components. A predicted time for maintenance for each like component is determined based on the corresponding at least one of the RUL and SOH of the like component, thereby enabling cost effective maintenance determinations for components based on a fleet- level information.
(FR) L’invention concerne un système informatique basé au sol qui reçoit des données de paramètres de performance pour des composants similaires disposées sur un aéronef similaire, et qui détermine des niveaux correspondants de dégradation et des taux de changement de dégradation pour les composants similaires respectifs. Un niveau de flotte de dégradation pour des groupes de composants similaires est généré sur la base d’une analyse des dégradations combinées des composants similaires dans le groupe respectif. Au moins un élément parmi une longévité utile résiduelle (RUL) et un état de santé (SOH) pour chaque composant des composants similaires respectifs est déterminé sur la base d’une comparaison des niveaux de dégradation pour chacun des composants similaires et un niveau de flotte de dégradation pour les groupes de composants similaires. Un temps prédit d’entretien pour chaque composant similaire est déterminé sur la base de l’élément ou des éléments parmi la RUL et le SOH du composant similaire, permettant ainsi des déterminations d’entretien efficace pour des composants sur la base d’informations au niveau de la flotte.
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