Abstract: This paper studies the fault detection strategy of the redundant flight control computer based on ARINC659 bus. The system architecture of the flight control computer is introduced, and the possible software and hardware fault types and their influences in the flight control computer system are analyzed. Aiming at the Three effective fault detection methods are proposed, and the specific implementation steps of each detection method are designed. In terms of detection reliability, a failure probability model is established to quantitatively analyze the detection accuracy of each failure mode after combining three failure detection methods. Finally, a semi-physical simulation platform is built to verify the rapidity and effectiveness of the detection method, which meet the reliability requirements.

Key words: ARINC659 bus, redundancy, flight control system, fault detection