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Fault Diagnosis and Its Applications to Fault Tolerant Control of a Turbojet Engine

Author

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  • Dong-Ju Han

    (Department of Aircraft Maintenance Engineering, Far East University, Eumseong 27601, Republic of Korea)

Abstract

This paper presents a comprehensive study of model-based fault diagnosis (FD) and a fault-tolerant control (FTC) scheme for sensor and actuator faults of turbojet engines. For actuator FD, an unbiased estimation scheme with a modified Kalman filter (KF) was developed. For sensor FD, two approaches, the generalized likelihood ratio with robust KF and the pseudo actuator model with modified KF, were investigated in a comparative study. For fault detection and isolation, test statistics are commonly employed to detect fault behavior. For FTC, integral-type sliding mode control using control reconfiguration and the reconstruction of the sensor signal was adopted with the FD schemes. The effectiveness of the employed methods was demonstrated in this study and discussed with numerical simulations.

Suggested Citation

  • Dong-Ju Han, 2023. "Fault Diagnosis and Its Applications to Fault Tolerant Control of a Turbojet Engine," Energies, MDPI, vol. 16(8), pages 1-21, April.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:8:p:3317-:d:1118648
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