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ON RECONFIGURABILITY WITH RESPECT TO ACTUATOR FAILURES
2002
IFAC Proceedings Volumes
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This papers considers the problem of fault tolerance with respect to actuator failures. ...
Accommodation and reconfiguration strategies are presented, and the system reconfigurability is analysed under possible energy limitation constraints. ...
For the actuation scheme I to be fault tolerant through reconfiguration with respect to the situation I F it is necessary and sufficient that the non-faulty actuators keep the system controllable (see ...
doi:10.3182/20020721-6-es-1901.00774
fatcat:poot44k7bndxpmazb6n7rriwqe
Reconfiguration of an industrial steam generator using bond graph modelling
2007
International journal of Modeling, identification and control
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An academic example is used to explain the steps involved in the analysis of fault indicators, fault isolation, system recovery, operating modes, transition schemes, and selection of appropriate control ...
We present a case study of development and implementation of fault tolerant control scheme for a steam generator process. ...
of the process cannot be isolated. • Mutually exclusive operating modes (OM 15 ): when FTC or reconfiguration of two or more mutually exclusive control loops is performed simultaneously, e.g. ...
doi:10.1504/ijmic.2007.014628
fatcat:j5rhskuwbneitpa6ecpo2rd7ie
Efficient Nonlinear Actuator Fault Detection and Isolation System for Unmanned Aerial Vehicles
2008
Journal of Guidance Control and Dynamics
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The fault detection and isolation system is also capable of handling two simultaneous actuator failures with no increase of the computational load. ...
Detection and Isolation of Simultaneous Failures
This section addresses the case of a second fault occurring simultaneously in the system. ...
doi:10.2514/1.31693
fatcat:5pi43k7v6ja27klrh7dqy4ccia
Fault-Tolerant Control of Discrete Event Systems: Comparison of two approaches on the same case study
2015
2015 IEEE 20th Conference on Emerging Technologies & Factory Automation (ETFA)
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In this paper, two approaches of Fault-Tolerant Control for Discrete Event Systems are compared: the Fault-Hiding approach [4] and the control reconfiguration approach [5] . ...
Then, a discussion on processing capacities, model sizes and limitations of the two methods is proposed. ...
Faults are detected, isolated and reported to reconfigurator using a diagnoser. The reconfigurator will then adapt the control law. ...
doi:10.1109/etfa.2015.7301626
dblp:conf/etfa/NiguezAF15
fatcat:ksx5mfis45gvvdwz6xene7npfe
Fault Diagnosis and Fault-Tolerant Control of an Octorotor UAV using motors speeds measurements
2017
IFAC-PapersOnLine
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A complete AFTC architecture including error detection, fault isolation and system recovery is presented. The diagnosis system is based on the motors speeds and currents measurements. ...
It uses the pseudo-inverse control allocation approach to redistribute the control efforts among the healthy actuators. This architecture is validated in real flights. ...
In case of one or more actuators failures, the healthy actuators can be reconfigured by the control allocation system without having to change the motion controller structure and tuning. ...
doi:10.1016/j.ifacol.2017.08.468
fatcat:vvmys23ht5ffjo245xtxzyg47e
Fault diagnosis and fault tolerant control methods for manned and unmanned helicopters: A literature review
2013
2013 Conference on Control and Fault-Tolerant Systems (SysTol)
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Compared with the former work, this review contains some in-depth discussion of various fault diagnosis techniques and a survey for fault tolerant control methods. ...
With the development of unmanned helicopters, the dependability of helicopters have attracted more and more attention of many researchers. ...
When any of the three actuators failure occurs, because of the coupling of control axes, the flight control system can achieve UH's attitude stability through swashplate reconfiguration and adjust UH's ...
doi:10.1109/systol.2013.6693906
fatcat:pg7e2qvhvfcnjdgyu572nslr7y
Fault-Tolerant Control Allocation: an Unknown Input Observer based approach
[article]
2013
arXiv
pre-print
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This paper focuses on the use of unknown input observers for detection and isolation of actuator and effector faults with control reconfiguration in overactuated systems. ...
The control allocation actively uses input redundancy in order to make relevant faults observable. The case study of an overactuated marine vessel supports theoretical developments. ...
One further advantage of actuator and effector redundancy is the possibility to reconfigure the control in order to cope with unexpected changes on the system dynamics, such as failures or malfunctions ...
arXiv:1306.5369v1
fatcat:qjhgm3c5hza3bhpe4iasbhvsq4
Fault Tolerant-Control: Solutions and Challenges
2016
Pomiary Automatyka Robotyka
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This means that the development of analogous strategies for non-linear systems is fully justified. ...
There are also approaches that can be efficiently used to minimize the uncertainty effect of the model of the system being controlled and diagnosed as well as noise and disturbances. ...
modeling techniques account the constraints related with the non-linear system and its control variables. − Development of process faults estimation technique along with sensor and actuator fault estimation ...
doi:10.14313/par_219/5
fatcat:jwuhx67ulna4boumi73zzqsttq
The Study on Reconfigurability Condition of Spacecraft Control System
2018
Advances in Astronautics Science and Technology
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Reconfigurability refers to the ability of the system to overcome all faults or restore some of its performance by changing the structure or control algorithm under the condition of resource constraints ...
and operating conditions within a certain period of time to ensure the security when the control system fails. ...
a linear stationary system with actuator failure [18] . ...
doi:10.1007/s42423-018-0030-4
fatcat:7kjohooqdvdifgi6lfqg7w2sby
Fault-tolerant control allocation: An Unknown Input Observer based approach with constrained output fault directions
2013
52nd IEEE Conference on Decision and Control
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This paper focuses on the use of unknown input observers for detection and isolation of actuator and effector faults with control reconfiguration in overactuated systems. ...
Cristofaro is with School of Science and Technology, ...
One further advantage of actuator and effector redundancy is the possibility to reconfigure the control in order to cope with unexpected changes on the system dynamics, such as failures or malfunctions ...
doi:10.1109/cdc.2013.6760472
dblp:conf/cdc/CristofaroJ13
fatcat:apelgfzh75gibg76utsnegiymm
Actuator Fault Tolerant Control Design Based on a Reconfigurable Reference Input
2008
International Journal of Applied Mathematics and Computer Science
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Actuator Fault Tolerant Control Design Based on a Reconfigurable Reference Input The prospective work reported in this paper explores a new approach to enhance the performance of an active fault tolerant ...
control system. ...
Passive FTC deals with a presumed set of system component failures based on the actuator redundancy at the controller design stage. ...
doi:10.2478/v10006-008-0048-1
fatcat:72d2vohdejcgpexlwdgittomoe
Health-aware Model Predictive Control including Fault-tolerant Capabilities for Drinking Water Transport Networks
2021
2021 29th Mediterranean Conference on Control and Automation (MED)
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The inclusion of components and system reliability in the MPC model is done through the Linear Parameter Varying (LPV) modelling approach with the aim of maximizing the availability of the system by considering ...
When a fault has occurred, the predictive controller must be redesigned to deal with the fault. This is done by considering the system reliability that is incorporated into the MPC model. ...
In this case, if the fault affects a critical actuator, MPC can not to continue with the control of the system. ...
doi:10.1109/med51440.2021.9480189
fatcat:yvbmjzgym5bljeuumk4nrwprwq
A fault diagnosis based reconfigurable longitudinal control system for managing loss of air data sensors for a civil aircraft
2014
IFAC Proceedings Volumes
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In the worst case of a total failure of all 6 sensors, a robust constant longitudinal control law is employed which ensures a basic longitudinal control performance. ...
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 ...
Actuators
and Sensors)
Reconfigurable
Longitudinal Controller
Reconfigurable
Signal Consolidation
u P
y
u
y
ρ
d
f
σ s
σ c
ι
FDD System ...
doi:10.3182/20140824-6-za-1003.00672
fatcat:hfd5ak5e5fc55gkb3ik52suyui
Fault Estimation and Fault Tolerant Control Strategies applied to VTOL Aerial Vehicles with Soft and Aggressive Actuator Faults
2020
IEEE Access
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The main contribution of this work is the design and the experimental validation of complete active FTC schemes by using the proposed FE systems in order to accommodate a soft actuator fault and reconfigure ...
The fault detection is done by comparing the fault estimation signal with a predefined threshold. Fault isolation is achieved by analyzing the sign of the fault estimation signal. ...
Adaptive thresholds were designed to detect and isolate actuator faults. In [15] - [21] aggressive actuator faults or failures have been considered in the design of the FTC systems. ...
doi:10.1109/access.2019.2963693
fatcat:xjvr3bagvbgszmjt4b4yvwgiw4
Fault Diagnosis and Fault Tolerant Control of Wind Turbines: An Overview
2022
Energies
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Hence, the deployment of algorithms capable of continuously monitoring and diagnosing potential faults and mitigating their effects before they evolve into failures is crucial. ...
Fault diagnosis and fault tolerant control designs have been the subject of intensive research in the past decades. ...
a second-order fast non-singular terminal SMC to deal with actuator gain-bias faults and stochastic disturbances. ...
doi:10.3390/en15197186
fatcat:4ylempxf25f7lnzo6j42fwe2s4
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