Results 171 to 180 of about 239 (204)

Active and passive fault-tolerant LPV control of wind turbines

Proceedings of the 2010 American Control Conference, 2010
This paper addresses the design and comparison of active and passive fault-tolerant linear parameter-varying (LPV) controllers for wind turbines. The considered wind turbine plant model is characterized by parameter variations along the nominal operating trajectory and includes a model of an incipient fault in the pitch system. We propose the design of
Sloth, Christoffer, Esbensen, Thomas, Stoustrup, Jakob; id_orcid 0000-0001-9202-3135   +2 more
openaire   +2 more sources

Passive Fault-Tolerant Control of a Fixed-Wing UAV Based on Model-Free Control

2021 5th International Conference on Control and Fault-Tolerant Systems (SysTol), 2021
Fixed-wing UAVs show a high interest and high challenges in control, fault diagnostic, and fault-tolerant control. Accurate models of highly coupled nonlinear systems as the Fixed-Wing UAV are complex and time consuming. A need to find a control architecture independent of the model, suitable for nonlinear systems and can reject disturbances is highly ...
Srour, Ali, Noura, Hassan, Theilliol, Didier   +2 more
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Passive fault tolerant control strategy in controlled wind turbines

2016 3rd Conference on Control and Fault-Tolerant Systems (SysTol), 2016
In wind turbines (WTs), some faults can induce saturation of the control signal, and these saturation nonlinearities might lead to instability. Therefore, a robust system against saturation can better deal with faults. In this work, an avoid saturation strategy is proposed for the torque control of WTs.
Leonardo Acho, José Rodellar, Christian Tutivén, Yolanda Vidal   +3 more
openaire   +1 more source

A hybrid active–passive fault‐tolerant control approach

Asia-Pacific Journal of Chemical Engineering, 2006
AbstractThis paper presents a hybrid active–passive approach to fault‐tolerant control (FTC). It combines the existing active fault‐tolerant control techniques with the newly developed passive decentralized unconditionally stabilizing (DUS) control.
Steven W. Su, Jie Bao, Peter L. Lee
openaire   +1 more source

Mixed passive / active strategy for fault tolerant control.

IFAC Proceedings Volumes, 2009
Abstract This paper presents a general frame in which the passive and active fault tolerant control strategies are mixed, by implementing several controllers, each dedicated to a subset of faults. The faults under consideration are associated with different hardware configurations, a problem setting that covers actuator outages, sensor losses, and ...
Marcel Staroswiecki, Denis Berdjag
openaire   +1 more source

Passive fault tolerant control of quadrotor UAV using a nonlinear PID

2015 IEEE International Conference on Robotics and Biomimetics (ROBIO), 2015
In this paper a passive fault tolerant controller based on nonlinear PID backstepping is proposed for a quadrotor unmanned aerial vehicle. The proposed approach is able to ensure robustness and maintain performance in presence of both actuators faults and parameters changes.
R. R. Benrezki, Mohamed Tadjine, F. Yacef, Omar Kermia   +3 more
openaire   +1 more source

Active versus passive fault tolerant control of a High Redundancy Actuator

2009 European Control Conference (ECC), 2009
The High Redundancy Actuator (HRA project investigates the use of large numbers of small actuation elements to achieve fault tolerance. The large number of components involved poses a unique challenge from a control perspective. This paper presents the two main options to control the HRA: using robust control (passive fault tolerance), and ...
Jessica Davies 0002, Thomas Steffen, Roger Dixon, Roger Goodall, Argyrios C. Zolotas   +4 more
openaire   +1 more source

Passive/active fault tolerant control for LTI systems with actuator outages

2009 European Control Conference (ECC), 2009
Many fault tolerant control applications consider a set of faults that is known in advance. Passive and active fault tolerance schemes aim at guaranteeing stability and performances for the whole set, differing by the level of simplicity and performance they allow.
Marcel Staroswiecki, Denis Berdjag
openaire   +1 more source

Passive supervisor for railway fault-tolerant Ethernet networked control systems

ETFA2011, 2011
In this study, OPNET simulations are run to study the performance of a single Gigabit Ethernet two-wagon train control network. The network carries both control and entertainment loads. Each wagon has two servers; a Controller to carry the control load and an Entertainment Server to carry the entertainment load.
Mai M. Hassan, Ramez M. Daoud, Hassanein H. Amer   +2 more
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Passive Fault Tolerance for a Magnetic Bearing Under PID Control

Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award, 2001
NASA Glenn Research Center (GRC) has developed a Fault-Tolerant Magnetic Bearing Suspension rig to enhance the safety of the bearing system for multiple component failures. A simple proportional-integral-derivative (PID) controller with no fault detection mechanisms was tested in a passive way where the initial bias current and control gains for all ...
Benjamin Choi, Andrew Provenza
openaire   +1 more source