Sensor Fault Detection and Diagnosis: Methods and Challenges

As modern industrial and physical systems evolve to enhance their reliability, sensor faults emerge as a critical challenge, posing a potential weak link in integrated health management. Redundancies in hardware sensors have become a common approach to mitigate these issues and bolster overall system reliability. However, this solution brings about higher system costs, augmented hardware, and increased complexity in system control. Consequently, there is a growing focus on research aimed at comprehending various sensor faults to enhance the effectiveness of sensor fault detection and diagnosis (FDD). This paper delves into the advancements in sensor fault diagnosis methodologies, outlines prevalent challenges, and identifies promising avenues for further research in the implementation of sensor FDD systems.