Fault tolerant attitude estimation for pico satellites using robust adaptive UKF

Halil E. Soken*, Chingiz Hajiyev

*Bu çalışma için yazışmadan sorumlu yazar

Araştırma sonucu: Kitap/Rapor/Konferans Bildirisinde BölümKonferans katkısıbilirkişi

3 Atıf (Scopus)

Özet

Unscented Kalman Filter (UKF) is a filtering algorithm which gives sufficiently good estimation results for estimation problems of nonlinear systems even when high nonlinearity is in question. However, in case of system uncertainty or measurements malfunctions the UKF becomes to be inaccurate and diverges by time. This study, introduces a fault tolerant attitude estimation algorithm for pico satellites. The algorithm uses a Robust Adaptive Unscented Kalman Filter (RAUKF) which performs correction for process noise covariance (Q-adaptation) or measurement noise covariance (R-adaptation) depending on the type of the fault. By the use of a newly proposed adaptation scheme for the conventional UKF algorithm, the fault is detected; isolated and the essential adaptation procedure is followed in accordance with the fault type. The proposed algorithm is tested as a part of the attitude estimation algorithm of a pico satellite, a satellite type for which computational convenience is necessary because of the design limitations.

Orijinal dilİngilizce
Ana bilgisayar yayını başlığı8th IFAC Symposium on Fault Detection, Supervision and Safety of Technical Processes, SAFEPROCESS 2012
YayınlayanIFAC Secretariat
Sayfalar726-731
Sayfa sayısı6
BaskıPART 1
ISBN (Basılı)9783902823090
DOI'lar
Yayın durumuYayınlandı - 2012
Etkinlik8th IFAC Symposium on Fault Detection, Supervision and Safety of Technical Processes, SAFEPROCESS 2012 - Mexico City, Mexico
Süre: 29 Ağu 201231 Ağu 2012

Yayın serisi

AdıIFAC Proceedings Volumes (IFAC-PapersOnline)
SayıPART 1
Hacim8
ISSN (Basılı)1474-6670

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???event.eventtypes.event.conference???8th IFAC Symposium on Fault Detection, Supervision and Safety of Technical Processes, SAFEPROCESS 2012
Ülke/BölgeMexico
ŞehirMexico City
Periyot29/08/1231/08/12

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