Fault Detection and Diagnosis for Double Redundant Sensors
双余度传感器的故障检测与识别

Sensors are essential and comparatively fragile units in any measurement and control system. Much attention is alway focused on the fault detection, diagnosis and signal reconstructure of sensors. The problem of failure detection and diagnosis using only the output signals from double redundant sensors is studied in this paper. A model of failure signal diagnosis (FSD) for double redundant sensors is proposed. A fundamental principle of FSD is established, and the correspondent recursive algorithm is presented. Finally, some simulation results are given.