Nonlinear filter design for fault diagnosis: application to the three-tank system

The problem of fault detection and isolation in a nonlinear framework is addressed. A systematic method that ensures the synthesis of asymptotic nonlinear filters is proposed for residual generation. In order to show the effectiveness of the proposed approach, each theoretical step is illustrated by means of simulations. The example of a three-tank system is then experimentally considered to verify the validity of our approach.