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논문 기본 정보

자료유형
학술저널
저자정보
Cheol-Kwan Yang (중앙대학교) Duk-Sun Shim (중앙대학교)
저널정보
대한전기학회 International Journal of Control Automation and Systems International Journal of Control Automation and System Vol.5 No.3
발행연도
2007.6
수록면
329 - 336 (8page)

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초록· 키워드

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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.

목차

Abstract
1. INTRODUCTION
2. FAULT DETECTION, ISOLATION, AND ACCOMMODATION (FDIA)
3. ACCOMMODATION RULE FOR SINGLE FAULT BASED ON SYSTEM PERFORMANCE
4. ACCOMMODATION RULE FOR DOUBLE FAULTS BASED ON SYSTEM PERFORMANCE
5. SIMULATIONS
6. CONCLUSIONS
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