SFDIA-Multiple Sensor Faults

Introduction

A NN-based SFDIA scheme is proposed for the detection of multiple sensor faults in a nonlinear UAV model. In general, a group of sensors can fail simultaneously or consecutively (i.e. one at a time). In this chapter, we consider the latter scenario where a 1s time gap is allowed between consecutive sensor faults. However as before we assume that once a sensor has failed it cannot recover from the fault. With reference to Chapter 5, the NN-RGPE approach is implemented on the same nonlinear UAV model however sensor faults are now introduced in the pitch gyro, angle of attack sensor and normal accelerometer. The tests are carried out under different sensor fault types (step-type, hard and soft additive faults) but only using Configuration 1 settings (refer to Chapter 5, section 5.8.2).