Accommodation rule based on navigation accuracy for double faults in redundant inertial sensor systems
- Authors
- Yang, Cheol-Kwan; Shim, Duk-Sun
- Issue Date
- Jun-2007
- Publisher
- INST CONTROL AUTOMATION & SYSTEMS ENGINEERS-KOREAN INST ELECTRICAL ENG
- Keywords
- accommodation rule; fault accommodation; fault detection and isolation; inertial sensors; parity equation
- Citation
- INTERNATIONAL JOURNAL OF CONTROL AUTOMATION AND SYSTEMS, v.5, no.3, pp 329 - 336
- Pages
- 8
- Journal Title
- INTERNATIONAL JOURNAL OF CONTROL AUTOMATION AND SYSTEMS
- Volume
- 5
- Number
- 3
- Start Page
- 329
- End Page
- 336
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/24061
- ISSN
- 1598-6446
2005-4092
- Abstract
- This paper considers a fault accommodation problem for inertial navigation systems (INS) that have redundant inertial sensors such as gyroscopes and accelerometers. It is well-known that the more sensors are used, the smaller the navigation error of INS is, which means that the error covariance of the position estimate becomes less. Thus, when it is decided that double faults occur in the inertial sensors due to fault detection and isolation (FDI), it is necessary to decide whether the faulty sensors should be excluded or not. A new accommodation rule for double faults is proposed based on the error covariance of triad-solution of redundant inertial sensors, which is related to the navigation accuracy of INS. The proposed accommodation rule provides decision rules to determine which sensors should be excluded among faulty sensors. Monte Carlo simulation is performed for dodecahedron configuration, in which case the proposed accommodation rule can be drawn in the decision space of the two-dimensional Cartesian coordinate system.
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Collections - College of ICT Engineering > School of Electrical and Electronics Engineering > 1. Journal Articles
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