A Jump-Markov Regularized Particle Filter for the estimation of ambiguous sensor faults

Enzo Iglésis, Karim Dahia, Helene Piet-Lahanier, Nicolas Jonathan Adrien Merlinge, Nadjim Horri, James Brusey

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Abstract

Sensor or actuator faults occurring on a Unmanned Aerial Vehicle (UAV) can compromise the system integrity.
Fault diagnosis methods is then becoming a required feature for those systems.
In this paper, the focus is on fault estimation for a fixed-wing UAVs in the presence of simultaneous sensor faults.
The altitude measurements of a UAV are commonly obtained from the combination of two different types of sensors: a Global Navigation Satellite System (GNSS) receiver and a barometer.
Both sensors are subject to additive abrupt faults.
To deal with the multimodal nature of the faulty modes, a Jump-Markov Regularized Particle Filter (JMRPF) is proposed in this paper to estimate the barometric altitude and GNSS altitude measurement faults, including the case when both faults occur simultaneously.
This method is based on a regularization step that improves the robustness thanks to the approximation of the conditional density by a kernel mixture.
In addition, the new jump strategy estimates the correct failure mode in 100% of the 100 simulations performed in this paper.
This approach is compared with an Interacting Multiple Model Kalman Filter (IMM-KF) and the results show that the JMRPF outperforms the IMM-KF approach, particularly in the ambiguous case when both sensors are simultaneously subject to additive abrupt faults.
Original languageEnglish
Pages756-763
Number of pages8
DOIs
Publication statusE-pub ahead of print - 14 Apr 2021
Event21st IFAC World Congress, 2020 - Berlin, Germany
Duration: 11 Jul 202017 Jul 2020

Conference

Conference21st IFAC World Congress, 2020
Abbreviated titleIFAC 2020
CountryGermany
CityBerlin
Period11/07/2017/07/20

Keywords

  • fixed-wing UAVs
  • fault estimation
  • Jump-Markov Regularized Particle Filter
  • IMM-KF

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