Results 31 to 40 of about 290 (181)
Energies, 2022 The EHA is a highly integrated closed hydraulic system which is widely used in aerospace, vehicles, and robotics because of its high power and lightweight size.
Ruizhe Li, Yuhuan Du, Yang Yu
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Detection of overload generated faults in electro-hydrostatic actuators [PDF]
2011 19th Mediterranean Conference on Control & Automation (MED), 2011 This paper proposes a method for detecting faults generated by increased loads in a class of mechanical control systems. It is considered that the load (input disturbance) is unmeasurable, only its bounds corresponding to normal operation are known. To solve the fault detection problem, a detector was proposed for a class of linear control systems that
Márton, Lörinc, Varga, Andreas
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IEEE Access, 2021 Electro-hydrostatic actuator (EHA) is an important type of power-by-wire (PBW) which is a highly integrated closed volume control system with the advantages of high reliability, high efficiency and easy maintenance.
Ligang Huang +3 more
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Study on fault diagnosis algorithms of EHA based on CNN-SVM
Xibei Gongye Daxue Xuebao, 2023 Contrapose the highly integrated, complex working conditions and many kinds of faults of aircraft electro hydrostatic actuator(EHA), to diagnose the typical fault of EHA effectively, a fault diagnosis algorithm based on convolutional neural networks (CNN)
LI Xudong +5 more
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IEEE Access, 2020 For electro-hydrostatic actuators (EHAs), how to estimate and compensate for the combined effects of the severe nonlinearity caused by inner leakage and friction, the parametric uncertainties of the hydraulic components due to the environment and the ...
Mingkang Wang +5 more
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Applied Sciences, 2021 This work presents a new disturbance observer-based chattering-attenuated terminal sliding mode control for a class of nonlinear systems in the presence of both mismatched and matched disturbances.
Duc Giap Nguyen +2 more
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Research on Dual-Variable Integrated Electro-Hydrostatic Actuator
Chinese Journal of Aeronautics, 2006 AbstractThe integrated electro-hydrostatic actuator (EHA) with variable displacement and variable rotation speed is researched. In the system, the output of the actuator is changed by controlling the rotation speed of the brushless DC servomotor and the displacement of the servopump. The mathematical model described in state space model is created. The
GAO, Bo +3 more
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Studies on the Thermal Behavior of an Electro-Hydrostatic Servo Actuator
ActuatorsThis paper presents a study on the thermal behavior of an electro-hydrostatic servo actuator designed to actuate the ailerons of an airliner. The considered servo actuator was designed using existing commercial off-the-shelf components (electric motor ...
Liviu Dinca +4 more
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Mathematics, 2020 In existing methods, full-state feedback is required for the position tracking of single-rod Electro Hydrostatic Actuators (EHAs). Measuring a full state is not always possible because of cost and space limitations.
Wonhee Kim, Daehee Won
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Intelligent Acousto‐Electrical Metamaterials (IAM) for Sound Source Detection
Advanced Materials, EarlyView.Our proposed metamaterial concept enables sound source detection using a single material, in contrast to conventional arrays that require dozens or even hundreds of transducers. We show that the coupled acoustic–vibrational–electrical responses in piezoelectric metamaterials give rise to topology‐governed charge transport, producing distinct voltage ...
Victor Couëdel +7 more
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