Results 31 to 40 of about 28,700 (312)

Two-Stage Hyperelliptic Kalman Filter-Based Hybrid Fault Observer for Aeroengine Actuator under Multi-Source Uncertainty

open access: yesAerospace
An aeroengine faces multi-source uncertainty consisting of aeroengine epistemic uncertainty and the control system stochastic uncertainty during operation.
Yang Wang, Rui-Qian Sun, Lin-Feng Gou
doaj   +1 more source

Sequential Fault-Tolerant Fusion Estimation for Multisensor Time-Varying Systems

open access: yesDiscrete Dynamics in Nature and Society, 2018
In this paper, the impact of the fusion framework on the fault diagnosis process is discussed. The centralized fusion framework makes it difficult to locate and estimate the sensor fault.
Xiaoliang Feng, Lan Wu, Chenglin Wen
doaj   +1 more source

Observer canonical form based robust fault detection and estimation for hyperbolic spatiotemporal dynamic systems

open access: yesIET Cyber-systems and Robotics, 2020
In this study, the authors propose a novel state and a fault estimation scheme for a class of hyperbolic spatiotemporal dynamic systems in the presence of unknown external disturbance.
Xiaodong Xu   +2 more
doaj   +1 more source

Robust Fault Detection of Switched Linear Systems with State Delays [PDF]

open access: yes, 2009
This correspondence deals with the problem of robust fault detection for discrete-time switched systems with state delays under an arbitrary switching signal.
Shi, Peng   +7 more
core   +1 more source

Fault Estimation Method for Nonlinear Systems With Perturbations Based on Augmented Fault Observer

open access: yesIEEE Access
This paper proposes a robust fault estimation method for nonlinear systems with both actuator and sensor faults. Specifically, a singular system is constructed by combining the state vector of the system with the fault vector of the sensor, and an ...
Yanxiu Sun, Ying Du, Yuping Zhang
doaj   +1 more source

Robust dynamic output feedback fault-tolerant control for Takagi-Sugeno fuzzy systems with interval time-varying delay via improved delay partitioning approach

open access: yesOpen Mathematics, 2016
This paper addresses the problem of robust fault-tolerant control design scheme for a class of Takagi-Sugeno fuzzy systems subject to interval time-varying delay and external disturbances.
Sun Chao, Wang Fuli, He Xiqin
doaj   +1 more source

Robust fault detection for networked systems with distributed sensors [PDF]

open access: yes, 2011
Copyright [2011] IEEE. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Brunel University's products or services.
Zidong Wang   +7 more
core   +1 more source

Forecasting the Dialysis Burden in Japan: Validation‐Based Projections of Prevalence and Incidence Through 2050

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Japan has one of the highest dialysis prevalence rates worldwide and a shrinking, aging population. Whether dialysis burden has entered a sustained post‐peak phase or whether recent declines partly reflect pandemic‐related disruptions remains uncertain.
Hatice Şahin   +2 more
wiley   +1 more source

Bispectrum of stator phase current for fault detection of induction motor [PDF]

open access: yes, 2009
A number of research studies has shown that faults in a stator or rotor generally show sideband frequencies around the mains frequency (50 Hz) and at higher harmonics in the spectrum of the Motor Current Signature Analysis (MCSA).
Gu, Fengshou   +5 more
core   +1 more source

Fault Severity Classification and Size Estimation for Ball Bearings Based on Vibration Mechanism

open access: yesIEEE Access, 2019
Severity identification and size estimation is a crucial part of the quantitative diagnosis for ball bearing faults. In this paper, novel fault severity classification rules and the size estimation model based on vibration mechanism for ball bearings are
Lingli Cui   +3 more
doaj   +1 more source

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