### Parity space-based fault detection for unmanned aerial vehicle flight control systems

ZHAO Xuan1, ZHONG Maiying2*, GUO Dingfei1

1. 1. School of Instrumentation Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China;
2. College of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao 266590, Shandong, China
• Received:2017-05-27 Online:2017-10-20 Published:2017-05-27

Abstract: The fault detection(FD)for unmanned aerial vehicle(UAV)flight control system is of great significance to ensure the flight safety of UAV. The parity space approach has the advantage of the decoupling of residual and unknown initial state. However, the increasing of parity order will lead to heavy computational task. Aiming at these problems, a modified parity space approach was put forward for the FD of UAV nonlinear flight control systems. The nonlinear fault model of UAV flight control system was established. On the foundation of parity space approach for linear discrete time-varying systems, the projection in Krein space was applied to calculate the evaluation function recursively, and thus the heavy online computational burden could be solved. The FD for UAV pitot tube and elevator was taken as an example to demonstrate the effectiveness of the proposed method. The results showed that the faults of the UAV flight control system could be detected rapidly through the proposed approach.

CLC Number:

• TP206
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