Results 11 to 20 of about 16,462 (216)

Iterative Learning Scheme Based Sensor Fault Estimation for Nonlinear Repetitive System

IEEE Access, 2019
Iterative learning scheme is proposed with the aim to achieve perfect tracking of a prescribed reference trajectory for systems that operate repetitively.
Li Feng, Meng Deng, Ke Zhang, Shuiqing Xu   +3 more
doaj   +1 more source

An estimation method for sensor faults based on observer in interconnected systems.

PLoS ONE
In this research, a class of nonlinear interconnected systems with sensor faults were investigated and an estimation method was proposed for system sensor faults based on the theory of system state reconstruction.
Yanxiu Sun, Hong Li
doaj   +1 more source

Optimal Fault Tolerant Control of Large-Scale Wind Turbines in the Case of the Pitch Actuator Partial Faults

Complexity, 2020
In this paper, an adaptive fault tolerant control strategy is proposed to deal with the three pitch actuator faults in the large-scale wind turbines. Firstly, a simultaneous state and fault estimation was performed through a suitable LMI (linear matrix ...
Younes Ait El Maati, Lhoussain El Bahir
doaj   +1 more source

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

Aerospace
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

Discrete 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

IET 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, Yuncheng Du, Stevan Dubljevic   +2 more
doaj   +1 more source

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

IEEE 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 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

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

IEEE 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, Zhi Jin, Jinfeng Huang, Huaqing Wang   +3 more
doaj   +1 more source

Fault tolerant control in an unmanned bicycle robot via sliding mode theory

IET Cyber-systems and Robotics, 2022
In this work, a new active fault tolerant control (FTC) is developed for an unmanned bicycle robot based on an integration between a sliding mode control (SMC), fault detection (FD), and fault estimation (FE) via a residual signal.
Mousa Alizadeh, Amin Ramezani, Hadis Saadatinezhad   +2 more
doaj   +1 more source