Results 31 to 40 of about 2,733 (162)

Adaptive Minimum-Entropy Hybrid Compensation for Compound Faults of Non-Gaussian Stochastic Systems

open access: yesIEEE Access, 2019
This study investigated minimum-entropy hybrid fault-tolerant control (FTC) theory for non-Gaussian stochastic systems with compound faults. After fuzzy linearization for the singular systems, the output probability density function (PDF) is generated by
Kaiyu Hu   +3 more
doaj   +1 more source

Actuator Weak Fault Diagnosis in Autonomous Underwater Vehicle Based on Tri-Stable Stochastic Resonance

open access: yesApplied Sciences, 2020
The autonomous underwater vehicle (AUV) is mainly used in the development and exploration of the ocean. As an important module of the AUV, the actuator plays an important role in the normal execution of the AUV.
Yang Jiang   +6 more
doaj   +1 more source

Robust Fault Diagnosis for a Quadrotor with Actuator Fault

open access: yesInternational Journal of Engineering and Technology, 2018
Background/Objectives: Fault diagnosis (FD) is a main role in active fault tolerant control system. It can not only determine the location but also estimate the magnitude of fault. Methods/Statistical analysis: This article presents an adaptive fault diagnosis approach for a quadrotor with a simulated actuator fault.
N. P. Nguyen, S. K. Hong
openaire   +1 more source

Observer Design for Actuator Failure of a Quadrotor

open access: yesIEEE Access, 2020
This article addresses the problem of fault estimation for a quadrotor unmanned aircraft vehicle (UAV). A robust H∞ observer is proposed to achieve fault and state estimation of a quadrotor UAV with actuator fault in the presence of external ...
Xiao-Lu Ren
doaj   +1 more source

Adaptive fault estimation (FE) and fault-toletant control (FTC) for the molten steel level in a strip casting process

open access: yesMetalurgija, 2023
In this paper, the problem of adaptive fault estimation and fault-tolerant control is studied for molten steel level for twin roll strip casting systems with the inclined angle and actuator fault.
X. L. Zhang, Y. J. Zhang, L. B. Wu
doaj  

Fault Tolerant Control of DFIG-Based Wind Energy Conversion System Using Augmented Observer

open access: yesEnergies, 2019
An augmented sliding mode observer is proposed to solve the actuator fault of an uncertain wind energy conversion system (WECS), which can estimate the system state and reconstruct the actuator faults.
Xu Wang, Yanxia Shen
doaj   +1 more source

A Hybrid Fault-Tolerant Control for Nonlinear Active Suspension Systems Subjected to Actuator Faults and Road Disturbances

open access: yesComplexity, 2020
This paper proposes a hybrid fault-tolerant control strategy for nonlinear active suspension subjected to actuator faults and road disturbances. First, an augmented closed-loop system model is established for the nonlinear active suspension system with ...
Hui Pang, Xue Liu, Yuting Shang, Rui Yao
doaj   +1 more source

Fault-tolerant control for a class of uncertain systems with actuator faults

open access: yesTsinghua Science and Technology, 2009
This paper is concerned with the problem of fault tolerant H8 controller design for polytopic uncertain systems against actuator faults. The type of fault mode describes as a more general and practical continuous fault model. A sufficient condition for the existence of fault tolerant controller is given by parameter-dependent Lyapunov function approach,
Sijun Ye   +3 more
openaire   +1 more source

Actuator and sensor fault isolation in a class of nonlinear dynamical systems

open access: yesJournal of Automation and Intelligence
Fault isolation in dynamical systems is a challenging task due to modeling uncertainty and measurement noise, interactive effects of multiple faults and fault propagation.
Hamed Tirandaz   +2 more
doaj   +1 more source

Actuator Fault Estimation for Vehicle Active Suspensions Based on Adaptive Observer and Genetic Algorithm

open access: yesShock and Vibration, 2019
This paper is concerned with the problem of actuator fault estimation (FE) for vehicle active suspension systems. First, the fast FE approach, which combines the output error term with its derivative term in the FE algorithm, is extended to the active ...
Pan Jin, Wenping Xue, Kangji Li
doaj   +1 more source

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