Results 1 to 10 of about 36,366 (303)

Actuator Fault Detection and Fault-Tolerant Control for Hexacopter [PDF]

Sensors, 2019
In this paper, fault detection and fault-tolerant control strategies are proposed to handle the issues of both actuator faults and disturbances in a hexacopter.
Ngoc Phi Nguyen, Nguyen Xuan Mung, Sung Kyung Hong   +2 more
doaj   +5 more sources

Observer-based fault tolerant control of shape memory alloy actuator [PDF]

Scientific Reports
This study aims to design and experimentally implement a nonlinear fault tolerant control scheme for shape memory alloy actuator employed for a robotic manipulator. In the proposed scheme, a super twisting sliding mode controller as a baseline controller
Mehdi Mirzaei, Sadra Rafatnia, Mohammad Mohammadi Shahir, Somayeh Jamshidi, Maryam Farbodi   +4 more
doaj   +2 more sources

Fault Detection, Isolation and Reconfiguration of Four-Bar Mechanism-Based Knee Exoskeleton [PDF]

Sensors
Knee exoskeletons are sophisticated wearable devices engineered to aid or augment human movement, especially in rehabilitation and mobility assistance contexts.
Prakhar Jain, Tarun Kumar Bera, Ashish Singla, Sajid Rafique, Magnus Isaksson   +4 more
doaj   +2 more sources

ADP-Based Fault-Tolerant Control with Stability Guarantee for Nonlinear Systems [PDF]

Entropy
This paper develops the stability-guaranteed adaptive dynamic programming (ADP)-based fault tolerant control (FTC) for nonlinear systems with an actuator fault. Firstly, a fault observer is designed to identify the unknown actuator fault.
Luojia Liu, Junhong Lv, Haowei Lin, Ruidian Zhan, Liming Wu   +4 more
doaj   +2 more sources

Adaptive Fault-Tolerant Control for Flexible Variable Structure Spacecraft with Actuator Saturation and Multiple Faults

Applied Sciences, 2022
This study investigated the adaptive fault-tolerant control (FTC) for a flexible variable structure spacecraft in the presence of external disturbance, multiple actuator faults, and saturation. The attitude system model of a variable structure spacecraft
Kai-Yu Hu, Wenjing Sun, Chunxia Yang
doaj   +1 more source

Model and Data-Driven Combination: A Fault Diagnosis and Localization Method for Unknown Fault Size of Quadrotor UAV Actuator Based on Extended State Observer and Deep Forest

Sensors, 2022
The rotor is an essential actuator of quadrotor UAV, and is prone to failure due to high speed rotation and environmental disturbances. It is difficult to diagnose rotor faults and identify the fault localization simultaneously. In this paper, we propose
Jia Song, Weize Shang, Shaojie Ai, Kai Zhao   +3 more
doaj   +1 more source

CNN-Based Intelligent Fault-Tolerant Control Design for Turbofan Engines With Actuator Faults

IEEE Access, 2021
In this paper, the problem of fault-tolerant control is investigated for turbofan engines with actuator faults. The controller involvement has repressed the effects of actuator faults on the controlled outputs of turbofan engines, making fault-tolerant ...
Dingding Cheng, Lijun Liu, Zhen Yu
doaj   +1 more source

Research on composite fault diagnosis technology of underwater vehicle actuator with positioning error constraint

Heliyon, 2023
When diagnosing the composite fault of the actuator, the characteristics of the motion force of the underwater vehicle are not analyzed, and there are diagnostic errors, resulting in the low accuracy of the diagnosis technology.
Dewen Zhu, Zhiyu Zhu
doaj   +1 more source

Adaptive Fixed-Time Nonsingular Terminal Sliding Mode Attitude Tracking Control for Spacecraft with Actuator Saturations and Faults

International Journal of Aerospace Engineering, 2021
This paper focuses on the potential actuator failures of spacecraft in practical engineering applications. Aiming at the shortcomings and deficiencies in the existing attitude fault-tolerant control system design, combined with the current research ...
Zhiguo Han, Minghao Wang, Xunliang Yan, Hang Qian   +3 more
doaj   +1 more source

An Actuator Fault Detection and Reconstruction Scheme for Hex-Rotor Unmanned Aerial Vehicle

IEEE Access, 2019
The detection and the reconstruction of actuator faults in a flight control system are crucial to avoid negative impacts on the aircraft itself, as well as human and environmental systems.
Rijun Wang, Changjun Zhao, Yue Bai, Wenhua Du, Junyuan Wang   +4 more
doaj   +1 more source