Filters








5,526 Hits in 3.2 sec

Fault isolation filter with linear matrix inequality solution to optimal decoupling

I.M. Jaimoukha, Zhenhai Li, E. Mazars
2006 2006 American Control Conference  
We then design a stable fault isolation filter such that the H ∞ -norm of the transfer matrix function from disturbances to the residual is minimized (for fault detection) subject to the constraint that  ...  In this paper we consider a model-based fault detection and isolation problem for linear time-invariant dynamic systems subject to faults and disturbances.  ...  FAULT ISOLATION FILTER DESIGN Next, we derive an optimal fault isolation filter for two cases: the square case (n y = n f ) and the general case (n y > n f ).  ... 
doi:10.1109/acc.2006.1656569 fatcat:e2kigpghgreejfpus33zgzhq2a

A Survey on Model-Based Fault Detection Techniques for Linear Time-Invariant Systems with Numerical Analysis

Masood Ahmad, Rosmiwati Mohd-Mokhta
2021 Pertanika journal of science & technology  
With the ongoing increase in complexity, less tolerance to performance degradation and safety requirements of practical systems has increased the necessity of fault detection (FD) as early as possible.  ...  During the last few decades, many research findings have been developed in fault diagnosis that addresses the issue of fault detection and isolation in linear and nonlinear systems.  ...  ACKNOWLEDGMENT The work is supported under the HRDI-UESTPS scholarship program funded by the Higher Education Commission (HEC) of Pakistan and partially supported by the USM RUI Grant: 1001/PELECT/8014093  ... 
doi:10.47836/pjst.30.1.04 fatcat:nx6s67dqs5c5lcl54t7fab75pa

Norm invariant discretization for sampled-data fault detection

Iman Izadi, Tongwen Chen, Qing Zhao
2005 Automatica  
A framework that unifies the H 2 and H ∞ optimal residual generators in sampled-data systems is then proposed.  ...  Based on this discretization, the sampled-data fault detection problem can be converted to an equivalent discrete-time problem.  ...  Acknowledgements This research was partially supported by the Natural Sciences and Engineering Research Council of Canada.  ... 
doi:10.1016/j.automatica.2005.03.028 fatcat:qelf6xbpbfh2nhbkddyqxvd75y

Enhanced fault detection and isolation in modern flight actuators

Daniel Ossmann
2013 2013 Australian Control Conference  
Based on the achievable fault signature matrix of the system, a residual filter is designed using nullspace theory.  ...  This paper presents the setup of a fault detection and diagnosis (FDD) system to systematically detect and isolate faults in the subcomponents of an actuation system.  ...  To robustly solve the fault detection and isolation problem (FDIP) a linear parameter varying (LPV) form of the designed filter is determined.  ... 
doi:10.1109/aucc.2013.6697262 dblp:conf/aucc/Ossmann13 fatcat:ruzmme7smncd5f5y6k4q4ne2cy

Real-time Fault Estimation for a Class of Discrete-Time Linear Parameter-Varying Systems [article]

Chris van der Ploeg, Emilia Silvas, Nathan van de Wouw, Peyman Mohajerin Esfahani
2021 arXiv   pre-print
The design of such a filter is formulated as an optimization problem and is solved recursively, while the system dynamics may vary over time.  ...  Estimating and detecting faults is crucial in ensuring safe and efficient automated systems.  ...  In the scope of fault detection, i.e., detecting the presence of a fault and estimation, i.e., determining the exact magnitude and shape of a fault, choosing between fault-sensitivity, attenuation and  ... 
arXiv:2104.11789v4 fatcat:r6so5q2ylngjhkz3fza4yzlaiq

A method for composite fault detection and isolation using overlapping decomposition

Rogério Bastos Quirino, Celso Pascoli Bottura
2003 SBA : Controle & Automação Sociedade Brasileira de Automatica  
The faulty sensors can be detected and isolated by comparing the estimated values of a single state from partially decoupled Kalman filters.  ...  In this article, a method is developed for fault detection in linear, stochastic, interconnected dynamic systems, based on designing a set of partially decentralized Kalman filters for the subsystems resulting  ...  ACKNOWLEDGEMENTS The authors wish to thank the reviewers for their thoughtful and helpful comments.  ... 
doi:10.1590/s0103-17592003000300003 fatcat:uhkpxtlhl5favflp6x4r52mtwq

Unknown Input Observer Based Robust Fault Estimation for Systems Corrupted by Partially-Decoupled Disturbances

Zhiwei Gao, Xiaoxu Liu, Michael Chen
2015 IEEE transactions on industrial electronics (1982. Print)  
Next, an unknown input observer is designed for the augmented system by decoupling the partial disturbances and attenuating the disturbances that cannot be decoupled, leading to a simultaneous estimate  ...  of the system states and the concerned faults.  ...  ACKNOWLEDGEMENT The work is partially supported by the PGR scholarship, the sabbatical leave scheme at the E&E faculty in the University of Northumbria, and the Alexander von Humboldt Renewed Fellowship  ... 
doi:10.1109/tie.2015.2497201 fatcat:utekv7f3qvgyjeeettb74x3nc4

Zonotopic Unknown Input Observer of Discrete-time Descriptor Systems for State Estimation and Robust Fault Detection

Ye Wang, Vicenҫ Puig, Feng Xu, Gabriela Cembrano
2018 IFAC-PapersOnLine  
This paper studies a set-based unknown input observer based on zonotopes for discrete-time descriptor systems affected by uncertainties with application to state estimation and robust fault detection.  ...  Abstract: This paper studies a set-based unknown input observer based on zonotopes for discrete-time descriptor systems affected by uncertainties with application to state estimation and robust fault detection  ...  Besides, for actuator faults are detected with one step delay and there is no delay for detecting sensor faults.  ... 
doi:10.1016/j.ifacol.2018.09.594 fatcat:kh66u7mq3fhthbc6ef7im7eeza

Information Based Fault Diagnosis

Henrik Niemann, Niels Kjølstad Poulsen
2008 IFAC Proceedings Volumes  
Fault detection and isolation, (FDI) of parametric faults in dynamic systems will be considered in this paper. An active fault diagnosis (AFD) approach is applied.  ...  The changes of the signatures form the external inputs are used for detection and isolation of the parametric faults.  ...  In connection with the design of Q FD,I , it is not necessary to design the pre-filter such that the decoupling is satisfied for all frequencies.  ... 
doi:10.3182/20080706-5-kr-1001.01502 fatcat:tv3aemz2xbagnfuuihywecvcde

A fault diagnosis based reconfigurable longitudinal control system for managing loss of air data sensors for a civil aircraft

A. Varga, D. Ossmann, H.-D. Joos
2014 IFAC Proceedings Volumes  
The fault isolation functionality is provided by a bank of 6 fault detection filters, which individually monitor each of the 6 sensors using robust low order LPV residual generators.  ...  An integrated fault diagnosis based fault tolerant longitudinal control system architecture is proposed for civil aircraft which can accommodate partial or total losses of angle of attack and/or calibrated  ...  outputs, where the k-th filter approximately decouples all control and disturbance inputs, as well as m f −1 faults and is only sensitive to the k-th fault.  ... 
doi:10.3182/20140824-6-za-1003.00672 fatcat:hfd5ak5e5fc55gkb3ik52suyui

Evaluation of PCA methods with improved fault isolation capabilities on a paper machine simulator

Hui Cheng, Mats Nikus, Sirkka-Liisa Jämsä-Jounela
2008 Chemometrics and Intelligent Laboratory Systems  
In order to increase the sensitivity of the residuals with respect to various faults, the structured residuals generated from both partial PCA and isolation-enhanced PCA are optimized.  ...  All the faults were correctly detected and isolated with both studied methods, and the results are compared with the classical T 2 and SPE contribution plot methods.  ...  Acknowledgements The authors wish to greatly acknowledge the Finnish Funding Agency for Technology and Innovation for funding this work, which has been carried out within the project Production 2010.  ... 
doi:10.1016/j.chemolab.2008.03.003 fatcat:cpr26skblfbotgnjx47v4hxncu

Page 9468 of Mathematical Reviews Vol. , Issue 2001M [page]

2001 Mathematical Reviews  
Once the system is in SCB form, a disturbance decoupled fault detection observer is proposed which is combined either with Beard-Jones detection filter theory or input estimation results.  ...  This will lead to the final proposed robust fault detection filter. The paper first considers the problem of multiple actuator fault detection and isolation.  ... 

A ROBUST DECONVOLUTION LMI PROCEDURE FOR FAULT DETECTION AND ISOLATION OF UNCERTAIN LINEAR SYSTEMS: AN LMI APPROACH

A. Casavola, D. Famularo, G. Franzè
2005 IFAC Proceedings Volumes  
A robust Fault Detection and Isolation (FDI) scheme for uncertain polytopic linear systems based on optimal H ∞ deconvolution filters is discussed.  ...  The filter must be capable to satisfy two sets of H ∞ constraints: the first is a disturbance-to-fault decoupling requirement, whereas the second expresses the capability of the filter to track the fault  ...  Such a filter will be designed so as to robustly decouple the residuals (Fault Detection) from the disturbances and conversely to enhance the sensitivity to each fault signal by properly separating classes  ... 
doi:10.3182/20050703-6-cz-1902.01803 fatcat:mgdrxuacujfrley6ieyfcuzyou

Robust fault detection of uncertain linear systems via quasi-LMIs

Alessandro Casavola, Domenico Famularo, Giuseppe Franzè
2008 Automatica  
Optimal H∞ deconvolution filters robust fault detection of uncertain polytopic linear systems subject to unknown input disturbance are described.  ...  The filter must be capable to satisfy two sets of H∞ constraints: the first is a disturbance attenuation and decoupling requirement whereas the second expresses the capability of the filter to enhance  ...  , Reggio Calabria (RC) 89100, ITALY, domenico.famularo@unirc.it We are interested to design a robust filter which achieves robust disturbance decoupling and fault detection capabilities in the frequency  ... 
doi:10.1016/j.automatica.2007.05.010 fatcat:brod25nnbbdszksrjaounzxlgq

Unknown Input Observer Based Scheme for Detecting Faults in a Wind Turbine Converter

Peter Fogh Odgaard, Jakob Stoustrup
2009 IFAC Proceedings Volumes  
The detection scheme detects and isolates both faults with in 2 samples of its beginning.  ...  In order to improve reliability of wind turbines, it is important to detect faults in the turbine as fast as possible to handle them in an optimal way.  ...  The structure is: where and are matrices designed to achieve decoupling from the unknown input and as well obtain an optimal observer. is a vector of the estimated states in the model.  ... 
doi:10.3182/20090630-4-es-2003.00027 fatcat:lerare4acvhsfaqggohx3h466e
« Previous Showing results 1 — 15 out of 5,526 results