Processing

Please wait...

Settings

Settings

Goto Application

1. WO1981003079 - REAL-TIME PERFORMANCE MONITORING OF GAS TURBINE ENGINES

Publication Number WO/1981/003079
Publication Date 29.10.1981
International Application No. PCT/US1980/000447
International Filing Date 22.04.1980
IPC
G06F 17/40 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
17Digital computing or data processing equipment or methods, specially adapted for specific functions
40Data acquisition and logging
CPC
G05B 23/0243
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
0243model based detection method, e.g. first-principles knowledge model
G07C 3/00
GPHYSICS
07CHECKING-DEVICES
CTIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
3Registering or indicating the condition or the working of machines or other apparatus, other than vehicles
Applicants
Inventors
Priority Data
US80/0044722.04.1980WO
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) REAL-TIME PERFORMANCE MONITORING OF GAS TURBINE ENGINES
(FR) CONTROLE DES PERFORMANCES EN TEMPS REEL DE MOTEURS A TURBINE A GAZ
Abstract
(EN)
Real-time gas turbine engine monitoring system which includes a digital processor (52) that utilizes a set of scalar coefficients and the current value of various engine operating parameters to predict the current value of a set of engine performance parameters. The actual values of these performance parameters are monitored and compared (56) with the predicted values to supply deviation or error signals to monitoring logic (62) which provides an indication of faults within the sensor units which provide the actual values of the monitored performance parameters and within the gas turbine engine (10). In addition, the deviation signals are utilized within the digital processor unit (52) to determine a time dependent quadratic estimate of the temporal characteristics of each monitored engine parameter. Signals representative of this quadratic estimate are supplied to trending logic (72) that provides prognostic information. To adapt the disclosed engine monitoring system to the particular engine being monitored, the system is operable in a calibration mode wherein digital filtering is utilized to automatically determine coefficient values which reflect normal differences in performance between the monitored engine and others of the same type. Since similar digital filtering is utilized in the determination of the temporal characteristics of the monitored engine parameters, common digital processor structure and processing is utilized to effect both system calibration and the estimate of the parameter trends or temporal characteristics.
(FR)
Un systeme de controle de moteurs a turbine a gaz en temps reel comprend un processeur digital (52) qui utilise un jeu de coefficients scalaires et la valeur courante de divers parametres de fonctionnement des moteurs pour predire la valeur courante d"un ensemble de parametres de performance des moteurs. Les valeurs reelles de ces parametres de performance sont controlees et comparees (56) avec les valeurs predites pour envoyer des signaux de deviation d"erreurs a une logique de controle (62) qui fournit une indication des erreurs dans les detecteurs qui fournissent les valeurs reelles des parametres de performance controlees et dans le moteur a turbine a gaz (10). De plus, les signaux de deviation sont utilises dans l"unite de processeur digital (52) pour determiner une estimation quadratique dependante du temps des caracteristiques temporelles de chaque parametre controle moteur. Des signaux representant cette estimation quadratique sont envoyes a une logique de tendance (72) qui fournit une information de pronostic. Pour adapter ce systeme de controle de moteur a un moteur particulier a controler, le systeme peut fonctionner dans un mode de calibrage ou un filtrage digital est utilise pour determiner automatiquement les valeurs des coefficients qui refletent les differences normales de performance entre le moteur controle et d"autres moteurs du meme type. Etant donne qu"un filtrage digital semblable est utilise pour determiner les caracteristiques temporelles des parametres du moteur controle un traitement et une structure d"un processeur digital commun sont utilises pour effectuer a la fois le calibrage du systeme et l"estimation des tendances des parametres ou des caracteristiques temporelles.
Also published as
Latest bibliographic data on file with the International Bureau