The Design Method of Multi-source Redundant Fuzzy Fault-tolerant Navigation System for Aerospace Vehicles

doi:10.3969/j.issn.1000-1093.2020.04.006

Abstract

Abstract: The multi-mission and multi-working mode of aerospace vehicles requires the navigation system to be flexible, accurate and stable. In aerospace vehicles, a variety of navigation sensors are often used to form a multi-source fault-tolerant integrated navigation system. A multiple source redundancy design method of fuzzy fault-tolerant navigation system is proposed. On the basis of designed fault diagnosis and isolation of each redundant system, the quality factor of each navigation system is calculated through fuzzy evaluation, thus effectively diagnosing and isolating the failure of inertial navigation system and ensuring its accuracy and reliability.The proposed method has good processing capacity for soft and hard faults. The simulated results show that the proposed method-based navigation system has the fault-tolerant performance. In the case of system malfunction, it has better performance compared to the traditional multi-source navigation system and good applicability in different flying stages. Key

Key words: aerospacevehicle, navigationsystem, multisourceandredundancy, faulttolerance, fuzzyevaluation

CLC Number:

V249.32⁺8

JING Yiming， WANG Rong， XIONG Zhi， ZHAO Yao， LIU Jianye. The Design Method of Multi-source Redundant Fuzzy Fault-tolerant Navigation System for Aerospace Vehicles[J]. Acta Armamentarii, 2020, 41(4): 670-680.

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第41卷第4期2020 年4月
兵工学报ACTA ARMAMENTARII
Vol.41No.4Apr.2020

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