Real time performance monitoring of gas turbine engines
US4215412A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1978 |
| Grant date | Jul 29, 1980 |
| Priority date | — |
| Expiry date | Jul 13, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C3/00
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A real-time gas turbine engine monitoring system is disclosed which includes a digital processor 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 with the predicted values to supply deviation or error signals to monitoring logic which provides an indication of faults within the digital processor, within the sensor units which provide the actual values of the monitored performance parameters and within the gas turbine engine. In addition, the deviation signals are utilized within the digital processor unit 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 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 differenc…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.