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Design of redundant fault-tolerant navigation system for near space UAV
Received date: 2016-04-22
Revised date: 2016-05-27
Online published: 2016-07-12
The near space UAV's navigation system fault can directly influence the aircraft's mission execution and flight safety, so the navigation system must be reliable enough for continuous and accurate work. In order to satisfy this requirement, the navigation system must be configured with all available navigation devices, such as inertial navigation system and global navigation system, to improve the reliability. Based on the near space UAV's guidance and control requirements for the navigation information, this paper proposes a standard three-redundant navigation system architecture, and designs the fault reconfiguration algorithm to realize the fault detection, isolation and reconfiguration by using a new weighted average signal voting algorithm. The simulation result using real sensor's measurement data validates the fault tolerant ability of the navigation system and the algorithm proposed in this paper. The research in this paper can be used for reference for the navigation system design for other types of UAVs.
WU Yongliang , CAI Ya'nan , BAOYIN Hexi , XIONG Lichuan , LIU Shengchuan . Design of redundant fault-tolerant navigation system for near space UAV[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2016 , 37(S1) : 91 -98 . DOI: 10.7527/S1000-6893.2016.0171
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