Non-Parametric Method for Fault Isolation in Nonlinear Dynamic Systems

Abstract

The problem of fault diagnosis in engineering systems with uncertainties described by nonlinear discrete-time models is studied within the scope of analytical redundancy concept. Solution of the problem assumes the checking redundancy relations existing among system inputs and outputs measured over a finite time window. The non-parametric method is considered to construct redundancy relations involving transformation of initial system model into canonical form with the special properties. The obtained results are illustrated by the general electric servoactuator of manipulation robots.