2015
IMAACA 2015 Proceeding
Fault accommodation by inverse simulation through solving a differential algebraic system obtained from a bond graph
Authors: Wolfgang Borutzky
Abstract
When an abrupt parametric fault occurs in a system, active fault tolerant control (FTC) aims at reconstructing the system input after the fault has been isolated and estimated so that the fault is compensated and the system output follows a desired trajectory despite the fault. Input reconstruction by inverse simulation is a quite gen- eral approach to active FTC which can be supported by ex- isting sophisticated simulation software for the solution of DAE systems. Desired outputs are obtained by computing a forward model of the healthy system. Values of the recon- structed input into the faulty systems needed at the next time instant are obtained by computing the DAE system of the in- verse model simultaneously. The proposed approach assumes a single fault hypothesis and is illustrated by application to averaged models of simple examples of power electronic systems. Differentiation of the inverse model equations with respect to time results in a semi- explicit ordinary differential equation (ODE) system.
I3M Scientific Sponsors
I3M Industrial Sponsors
I3M Media Sponsors
