Intelligent Fault Diagnosis and Health Monitoring System for On-orbit FPGA Critical Components

With the increase in space exploration activities, it has become particularly important to ensure the reliability of spacecraft operations in orbit. On-orbit critical components, especially electronic assemblies on spacecraft, are particularly sensitive to single-event effects and cosmic rays. In this paper, a Field Programmable Gate Array (FPGA)-based intelligent fault diagnosis system is proposed to improve the fault detection and response capability of on-orbit critical components in the face of cosmic rays and single-event effects. The system utilizes the high configurability and fast processing speed of FPGA to realize realtime data monitoring, processing and fault detection. Through practical tests, the system’s ability to effectively recognize and handle various types of faults, such as single-event lockup, singleevent function error, and total dose effect, is verified, and the fault diagnosis accuracy rate exceeds 90%. The results show that the system can significantly improve the fault detection efficiency and reliability of key components, providing a strong guarantee for the long-term stable operation of spacecraft.