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Aircraft engine on-line diagnostics through dual-channel sensor measurements: development of an enhanced system
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Kobayashi, Takahisa Simon, Donald L. |
| Copyright Year | 2008 |
| Description | In this paper, an enhanced on-line diagnostic system which utilizes dual-channel sensor measurements is developed for the aircraft engine application. The enhanced system is composed of a nonlinear on-board engine model (NOBEM), the hybrid Kalman filter (HKF) algorithm, and fault detection and isolation (FDI) logic. The NOBEM provides the analytical third channel against which the dual-channel measurements are compared. The NOBEM is further utilized as part of the HKF algorithm which estimates measured engine parameters. Engine parameters obtained from the dual-channel measurements, the NOBEM, and the HKF are compared against each other. When the discrepancy among the signals exceeds a tolerance level, the FDI logic determines the cause of discrepancy. Through this approach, the enhanced system achieves the following objectives: 1) anomaly detection, 2) component fault detection, and 3) sensor fault detection and isolation. The performance of the enhanced system is evaluated in a simulation environment using faults in sensors and components, and it is compared to an existing baseline system. |
| File Size | 590862 |
| Page Count | 22 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20080031176 |
| Archival Resource Key | ark:/13960/t46q6xq2t |
| Language | English |
| Publisher Date | 2008-06-01 |
| Access Restriction | Open |
| Subject Keyword | Avionics And Aircraft Instrumentation Systems Health Monitoring Engine Inlets On-line Systems Aircraft Engines Degradation Fault Detection Simulation Nonlinearity Mathematical Models Channels Data Transmission Diagnosis Sensors Kalman Filters Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
