CEAS EuroGNC 2024
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Fault Detection and Estimation of Fault Redundant Airspeed using Unscented Kalman Filter
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| S. Janakiraman |
Master Student, Control and Simulation, TU-Delft, 2629HS, Delft, the Netherlands. | | S. Schopferer |
Team Leader Safe Autonomy, DLR Institute of Flight Systems, Braunschweig, Germany. | | C.C. de Visser |
Associate Professor, Control and Simulation, TU-Delft, Delft, the Netherlands. |
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| Abstract:
Reliable measurements on key air data parameters such as air speed, angle of attack, and angle of sideslip are essential for safe flight operations. Unfortunately, due to their direct exposure to a sometimes hostile environment, air-data sensors are sensitive to faults. In order to maintain reliable knowledge of the air speed after pitot tube faults, the Double Model Adaptive Estimation (DMAE) method is combined with an Unscented Kalman Filter (UKF) estimation routine that uses a kinematic model that incorporates the effects of the turbulence. The approach requires sensor data from the pitot tube, angle of attack vanes, angle of sideslip vanes, and attitude angles from the Inertial Navigation System (INS). For the kinematic equation the Inertial Measurement Unit (IMU) data (Accelerometer / Gyroscope) are used to perform the estimation. The proposed approach is validated with data generated by a high-fidelity (nonlinear) Citation-550 Simulator. Realistic fault modes are used in the validation, including combinations of total pressure port and static pressure port blockages. With this approach, airspeed fault detection is performed and a fault redundant airspeed is estimated. The Augmented Fault UKF is found to achieve an unbiased state estimation even in the presence of unknown disturbances.
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| Keywords: |
 View PDF CEAS-GNC-2024-003 |
| S. Janakiraman, S. Schopferer, C.C. de Visser: Fault Detection and Estimation of Fault Redundant Airspeed using Unscented Kalman Filter. Proceedings of the 2024 CEAS EuroGNC conference. Bristol, UK. June 2024. CEAS-GNC-2024-003.
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| BibTeX entry:
@Incollection{CEAS-GNC-2024-003,
author = {Janakiraman, S. and Schopferer, S. and de Visser, C.C.},
title = {Fault Detection and Estimation of Fault Redundant Airspeed using Unscented Kalman Filter},
booktitle = {Proceedings of the 2024 {CEAS EuroGNC} conference},
address = {Bristol, UK},
month = jun,
year = {2024},
note = {CEAS-GNC-2024-003}
}
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