Combined estimation of actuator and sensor faults for non-linear dynamic systems

Abstract

The paper deals with the problem of simultaneous estimation of the state as well as actuator and sensor faults for non-linear dynamic systems. The actuator and sensor faults can appear simultaneously, at the same time. The proposed strategy is based on quadratic boundedness approach allowing the convergence analysis of the proposed estimator. The final part of the paper shows an illustrative example based on a real multi-tank system, which clearly exhibits the performance of the proposed approach.