Publication

Simultaneous interval estimation of actuator fault and state for a class of nonlinear systems by zonotope analysis

Journal Article (2024)

Journal

Journal of Process Control

Pages

103303

Volume

142

Doc link

https://doi.org/10.1016/j.jprocont.2024.103303

File

Download the digital copy of the doc pdf document

Authors

Abstract

In this paper, an actuator fault and state interval estimation method for a class of nonlinear systems is proposed by integrating observer design and zonotope analysis. For the considered systems, we present a novel unknown input observer structure with broad applications. The design procedure is based on H∞ method to decrease the influence of unknown but bounded process disturbances and measurement noise. Moreover, a novel interval estimation method is presented based on zonotope analysis to obtain tighter intervals. Numerical simulations of a quadruple-tank system are conducted to assess the performance of the proposed approach.

Categories

control theory.

Scientific reference

C. Xu, Z. Wang, V. Puig and Y. Shen. Simultaneous interval estimation of actuator fault and state for a class of nonlinear systems by zonotope analysis. Journal of Process Control, 142: 103303, 2024.