Detection and Diagnosis of Small Changes in Nonlinear

In this paper, we describe a general approach for detecting small changes, which can be applied to a wide class of nonlinear systems, and which can manage with a reduced order and biased signature of the monitored system. We show how to implement this general approach for solving a real problem, namely the monitoring of the combustion chambers of a gas turbine. Furthermore, we also describe a statistical method for solving the problem of diagnosing the detected changes in the combustion chambers