Results 11 to 20 of about 86 (83)
Engineering Applications of Computational Fluid Mechanics, 2019 Raising the rotational speed of electro-hydrostatic actuator (EHA) pumps is a useful way to improve their power density. However, gaseous cavitation tends to occur in the displacement chambers at high speed, reducing the effective delivery flow rate of ...
Qun Chao +4 more
doaj +2 more sources
Position Control of a Single‐Rod Electro‐Hydrostatic Actuator Experiencing a Leaky Piston Seal
Mathematical Problems in Engineering, Volume 2022, Issue 1, 2022., 2022 Single‐rod cylinders are generally employed in electro‐hydrostatic actuators (EHAs). A condition that is difficult to detect and could degrade the performance in single‐rod EHAs, is the faulty cylinder piston seal. It causes internal leakage from one chamber of the actuator to another.
Guangan Ren +4 more
wiley +1 more source
Modeling and Analysis of Prostate Soft Tissue Puncture Performance using Puncture Needle
Applied Bionics and Biomechanics, Volume 2022, Issue 1, 2022., 2022 When treating prostate cancer, the use of puncture robots is an effective method to perform radioactive seed implantation surgery. However, when the puncture needle enters the lesion, the soft tissue is easily deformed owing to the complex force between the puncture needle and soft tissue, which leads to a puncture deviation between the needle tip and ...
Bing Li, Lipeng Yuan, Qiguo Rong
wiley +1 more source
Perspectives and Development of Electrical Systems in More Electric Aircraft
International Journal of Aerospace Engineering, Volume 2021, Issue 1, 2021., 2021 On‐board electrical systems are the key components of each modern aircraft. They enable its safer, more comfortable, and environmentally friendlier operation. The strict regulations to reduce pollution and noise are produced by aircraft eventuated in projects like Clean Sky or ICAO Global Coalition for Sustainable Aviation.
Ahmet Yigit Arabul +7 more
wiley +1 more source
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
doaj +1 more source
RISE-Based Composite Adaptive Control of Electro-Hydrostatic Actuator with Asymptotic Stability
Machines, 2021 The electro-hydrostatic actuator (EHA), the actuator of electric drive and hydraulic transmission, is competitive since it is small in size, light in weight and high in power density.
Yaowen Ge +3 more
doaj +1 more source
Load-Sensing Pump Design to Reduce Heat Generation of Electro-Hydrostatic Actuator Systems
Energies, 2018 The electro-hydrostatic actuator (EHA) with variable pump displacement is considered to be a promising alternative to the currently popular EHA with fixed pump displacement in terms of heat reduction.
Qun Chao +5 more
doaj +1 more source
Applied Sciences, 2023 A new type dissimilar redundant actuation system (NT-DRAS), which is composed of an electro-hydrostatic actuator (EHA) and an electro-mechanical actuator (EMA), is applied in high value unmanned aerial vehicles such as the future near space vehicles to ...
Jian Huang +5 more
doaj +1 more source
An improved EKF based on excitation equivalent conversion for EHA multi-factor fault diagnosis
Advances in Mechanical Engineering, 2022 Electro-hydrostatic actuator (EHA), as an emerging power-by-wire (PBW) actuation mechanism with high energy efficiency and fast responsiveness, has been widely used in modern flight control systems.
Pei Chen +4 more
doaj +1 more source
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
doaj +1 more source