Fault detection using state estimation. Application to an electromechanical process

Presents a method in order to detect and localize sensor or actuator failures. This approach is based on redundancy analysis using data reconciliation. This procedure yields to a simultaneous state and input estimation through a sliding window. Using the concept of standardized least square residuals, residuals can be generated in a number of ways and a corresponding design of fault detection and fault isolation scheme can be presented. The authors verify the performances of their method on a real electromechanical system (DC engine)