Non‐minimum phase switched systems: HOSM‐based fault detection and fault identification via Volterra integral equation‡§. (4th December 2013)

• Record Type: Journal Article
• Authors: Ríos, H.; Efimov, D.; Davila, J.; Raïssi, T.; Fridman, L.; Zolghadri, A.
• Is Part Of: International journal of adaptive control and signal processing. Volume 28:Number 12(2014:Dec.)
• Page Start: 1372
• Page End: 1397
• Publication Date: 2013-12-04
• Subjects: Adaptive control systems -- Periodicals; Adaptive signal processing -- Periodicals; 629.836
• DOI: 10.1002/acs.2448
• Languages: English
• ISSNs: 0890-6327

Abstract

<abstract abstract-type="main" id="acs2448-abs-0001"> <title>SUMMARY</title> <p>In this paper, the problem of continuous and discrete state estimation for a class of linear switched systems with additive faults is studied. The class of systems under study can contain non‐minimum phase zeroes in some of their 'operating modes'. The conditions for exact reconstruction of the discrete state are given using structural properties of the switched system. The state space is decomposed into the strongly observable part, the non‐strongly observable part, and the unobservable part, to analyze the effect of the unknown inputs. State observers based on high‐order sliding mode to exactly estimate the strongly observable part and Luenberger‐like observers to estimate the remaining parts are proposed. For the case when the exact estimation of the state cannot be achieved, the ultimate bounds on the estimation errors are provided. The proposed strategy includes a high‐order sliding‐mode‐based fault detection and a fault identification scheme via the solution of a Volterra integral equation. The feasibility of the proposed method is illustrated by simulations. Copyright © 2013 John Wiley &amp; Sons, Ltd.</p> </abstract>