Journal ArticleDOI
A geometric approach to nonlinear fault detection and isolation
C. De Persis,Alberto Isidori +1 more
TLDR
A differential geometric approach to the problem of fault detection and isolation for nonlinear systems derived in terms of an unobservability distribution, which is computable by means of suitable algorithms.Abstract:
We present a differential geometric approach to the problem of fault detection and isolation for nonlinear systems. A necessary condition for the problem to be solvable is derived in terms of an unobservability distribution, which is computable by means of suitable algorithms. The existence and regularity of such a distribution implies the existence of changes of coordinates in the state and in the output space which induce an "observable" quotient subsystem unaffected by all fault signals but one. For this subsystem, a fault detection filter is designed.read more
Citations
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Journal ArticleDOI
A Survey of Fault Detection, Isolation, and Reconfiguration Methods
TL;DR: A survey of the various model-based FDIR methods developed in the last decade is presented, and various techniques of implementing reconfigurable control strategy in response to faults are discussed.
Journal ArticleDOI
Fault Accommodation for Nonlinear Dynamic Systems
TL;DR: This note investigates process fault accommodation in a class of nonlinear continuous-time systems using a new fault estimation module, based on an adaptive estimator, to compensate for the effect of the faults by stabilizing the closed-loop system.
Journal ArticleDOI
Brief paper: Nonlinear robust fault reconstruction and estimation using a sliding mode observer
TL;DR: This paper considers fault detection and estimation issues for a class of nonlinear systems with uncertainty, using an equivalent output error injection approach, and a particular design of sliding mode observer is presented for which the parameters can be obtained using LMI techniques.
Journal ArticleDOI
Fault diagnosis of a class of nonlinear uncertain systems with Lipschitz nonlinearities using adaptive estimation
TL;DR: This paper presents a fault detection and isolation (FDI) scheme for a class of Lipschitz nonlinear systems with nonlinear and unstructured modeling uncertainty that significantly extends previous results by considering a more general class of system nonlinearities which are modeled as functions of the system input and partially measurable state variables.
Journal ArticleDOI
A Systems and Control Perspective of CPS Security
Seyed Mehran Dibaji,Mohammad Pirani,David Bezalel Flamholz,Anuradha M. Annaswamy,Karl Henrik Johansson,Aranya Chakrabortty +5 more
TL;DR: A survey of systems and control methods proposed for the security of Cyber-Physical Systems, a field that has recently garnered increased attention, classifies these methods into three categories based on the type of defense proposed against the cyberattacks: prevention, resilience, and detection & isolation.
References
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Book
Nonlinear Control Systems
Alberto Isidori,M. Thoma,Eduardo D. Sontag,B. W. Dickinson,A. Fettweis,J. L. Massey,J. W. Modestino +6 more
TL;DR: In this paper, a systematic feedback design theory for solving the problems of asymptotic tracking and disturbance rejection for linear distributed parameter systems is presented, which is intended to support the development of flight controllers for increasing the high angle of attack or high agility capabilities of existing and future generations of aircraft.
Journal ArticleDOI
Fault diagnosis in dynamic systems using analytical and knowledge-based redundancy—a survey and some new results
TL;DR: In this article, the authors review the state of the art of fault detection and isolation in automatic processes using analytical redundancy, and present some new results with emphasis on the latest attempts to achieve robustness with respect to modelling errors.
Book
Nonlinear Dynamical Control Systems
TL;DR: The controlled Invariant Submanifolds and Nonlinear Zero Dynamics and the Disturbance Decoupling problem are studied.
Book
Linear Multivariable Control: A Geometric Approach
TL;DR: In this article, the authors present an approach to controlability, feedback assignment, and pole shifting in a single linear functional model, where the observer is assumed to be a dynamic observer.