Results 31 to 40 of about 283 (166)
The Journal of Engineering, 2023 Developing a method to detect internal leakage in hydraulic cylinder, which is used for Electro‐Hydrostatic Actuators (EHA), is important to prevent serious malfunctions for aircrafts.
Qingchuan He +3 more
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Machines, 2023 The wheel-legged robot combines the functions of wheeled vehicles and legged robots: high speed and high passability. However, the limited performance of existing joint actuators has always been the bottleneck in the actual applications of large wheel ...
Huipeng Zhao +5 more
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Mathematics, 2021 In the existing literature, studies on position controller design using only position feedback, considering the disturbances for single-rod electro-hydrostatic actuators (EHAs), have not been reported.
Young Seop Son, Wonhee Kim
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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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ActuatorsPrognostic and Health Management (PHM) strategies are gaining increasingly more traction in almost every field of engineering, offering stakeholders advanced capabilities in system monitoring, anomaly detection, and predictive maintenance. Primary flight
Leonardo Baldo +3 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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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
wiley +1 more source
Transactions of Nanjing University of Aeronautics and AstronauticsWith the advancement of more electric aircraft （MEA） technology， the application of electro-hydrostatic actuators （EHAs） in aircraft actuation systems has become increasingly prevalent.
GUO Tuanhui, FU Yongling, CHEN Juan
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Performance Analysis of an Electro-Hydrostatic Actuator
Journal of the Korean Society for Aeronautical & Space Sciences, 2007 The EHA(Electro-hydrostatic Actuator) reveals completely different characteristics from the conventional valve-controlled Electro-hydraulic actuators. In this paper, its mathematical model including nonlinear elements was derived to be verified by experiments.
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Advanced Science, EarlyView.In this work, a bioinspired all‐in‐one underwater quality evaluation metamaterial, combining sound attenuation, diffuse reflection, and mechanical robustness, is proposed based on jumping spider locomotion and human skeletal biomechanics. Meanwhile, a CNN‑driven quality evaluation framework is established for theoretically dimension‐reduced ...
Hongze Li +8 more
wiley +1 more source