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Paper details
Number 4 - December 2018
Volume 28 - 2018
Fault diagnosis in nonlinear hybrid systems
Alexey Zhirabok, Alexey Shumsky
Abstract
The problem of fault diagnosis in hybrid systems is investigated. It is assumed that the hybrid systems under consideration
consist of a finite automaton, a set of nonlinear difference equations and the so-called mode activator that coordinates the
action of the other two parts. To solve the fault diagnosis problem, hybrid residual generators based on both diagnostic
observers and parity relations are used. It is shown that the hybrid nature of the system imposes some restrictions on the
possibility of creating such generators. Sufficient solvability conditions of the fault diagnosis problem are found. Examples
illustrate details of the solution.
Keywords
hybrid systems, finite automata, mode activator, fault diagnosis, nonparametric method