Results 31 to 40 of about 4,945 (206)

Iris segmentation [PDF]

, 2018
The quality of eye image data become degraded particularly when the image is taken in the non-cooperative acquisition environment such as under visible wavelength illumination.
Ahmad, Asraful Syifaa’, Ahmar, Ansari Saleh, Asmuni,, Hishamudin, Hassan, Rohayanti, Hidayat, Rahmat, Kasim, Shahreen, Mat Raffei, Anis Farihan   +6 more
core   +1 more source

Modal and nonmodal stability analysis of electrohydrodynamic flow with and without cross-flow [PDF]

, 2015
We report the results of a complete modal and nonmodal linear stability analysis of the electrohydrodynamic flow (EHD) for the problem of electroconvection in the strong injection region.
Atten, Atten, Atten, Boyd, Fulvio Martinelli, Félici, Jian Wu, Maurizio Quadrio, Melcher, Mengqi Zhang, Peter J. Schmid, Schmid   +11 more
core   +2 more sources

Nonlinear Position Control with Nonlinear Coordinate Transformation Using Only Position Measurement for Single-Rod Electro-Hydrostatic Actuator

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
doaj   +1 more source

A method to detect internal leakage of hydraulic cylinder by combining data augmentation and multiscale residual CNN

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, Huiqi Ruan, Jun Pan, Xiaotian Lyu   +3 more
doaj   +1 more source

Design and Experiments of Electro-Hydrostatic Actuator for Wheel-Legged Robot with Fast Force Control Response

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, Junjie Zhou, Sanxi Ma, Shanxiao Du, Hui Liu, Lijin Han   +5 more
doaj   +1 more source

Monolayer MoS2 strained to 1.3% with a microelectromechanical system [PDF]

, 2019
We report on a modified transfer technique for atomically thin materials integrated onto microelectromechanical systems (MEMS) for studying strain physics and creating strain-based devices.
Bishop, David J., Bunch, J. Scott, Christopher, Jason W., Goldberg, Bennett B., Lloyd, David, Swan, Anna K., Vutukuru, Mounika   +6 more
core   +1 more source

Variable displacement electro-hydrostatic actuator [PDF]

Proceedings of the IEEE 1991 National Aerospace and Electronics Conference NAECON 1991, 2002
The author discusses the effects of pump displacement on electro-hydrostatic actuator (EHA) performance characteristics and the possible advantages of using a variable displacement pump in an EHA. Issues discussed are heating, size, and stiffness.
openaire   +1 more source

Robust Nonlinear Position Control with Extended State Observer for Single-Rod Electro-Hydrostatic Actuator

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
doaj   +1 more source

Periodic Flows in Microfluidics. [PDF]

Small
This paper comprehensively reviews periodic flows in microfluidics, including their fundamentals, generation techniques, and applications. The theoretical fundamentals of periodic flows are explained using the hydraulic‐electric analogy and study the working principles of various periodic flow generation techniques.
Mudugamuwa A, Roshan U, Hettiarachchi S, Cha H, Musharaf H, Kang X, Trinh QT, Xia HM, Nguyen NT, Zhang J.   +9 more
europepmc   +2 more sources

Effect of contact angle hysteresis on thermocapillary droplet actuation [PDF]

, 2005
Open microfluidic devices based on actuation techniques such as electrowetting, dielectrophoresis, or thermocapillary stresses require controlled motion of small liquid droplets on the surface of glass or silicon substrates.
Chen, Jian Z., Darhuber, Anton A., Troian, Sandra M., Wagner, Sigurd   +3 more
core   +1 more source