Detection, Isolation and Identification Method of Actuators Faults in a Waste Water Treatment Process

This paper proposes a new approach to adaptive nonlinear observer design, for the detection, isolation and identification of actuators faults. After giving the notion of a faulty model and a simple observer design, a new scheme based on the adaptive observers is realized. A first bank of adaptive observers is used for the fault detection and identification, a second set of banks is designed for its isolation. The advantage of this method is that the fault isolation is much faster than other observer based methods. An example of a waste water treatment process with real data is given to show the effectiveness of our.