Results 61 to 70 of about 6,064 (306)

Research on air flow control device for excavating face

Gong-kuang zidonghua, 2021
At present, it is difficult to adjust the air flow at the outlet of the wind pipe dynamically by the total ventilation control method commonly used in the excavating face, resulting in insufficient air volume or unreasonable air flow distribution, and ...
GONG Xiaoyan, CUI Xiaoqiang, LEI Kefan, ZHAO Kuan, LIU Hui, FENG Xiong   +5 more
doaj   +1 more source

Pneumatic Variable Series Elastic Actuator [PDF]

Journal of Dynamic Systems, Measurement, and Control, 2016
Inspired by human motor control theory, stiffness control is highly effective in manipulation and human-interactive tasks. The implementation of stiffness control in robotic systems, however, has largely been limited to closed-loop control, and suffers from multiple issues such as limited frequency range, potential instability, and lack of contribution
Hao, Zheng, Molei, Wu, Xiangrong, Shen
openaire   +2 more sources

Computational and experimental study of air hybrid engine concepts [PDF]

, 2011
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel UniversityThe air hybrid engine absorbs the vehicle kinetic energy during braking, stores it in an air tank in the form of compressed air, and reuses it to start the ...
Lee, Cho-Yu
core  

Review of Thermally Activated Twisted Coiled Polymer Actuators: A Materials Science Perspective

Advanced Functional Materials, EarlyView.
Thermally activated twisted and coiled polymer actuators (TCPAs) combine lightweight design, large deformation, and scalable fabrication for soft robotic and wearable applications. This review connects polymer structure, processing history, helix geometry, and thermomechanical characterization to actuator performance, highlighting current challenges in
Nadja Schenk, Lukas Benecke, Chokri Cherif, Johannes Mersch   +3 more
wiley   +1 more source

How to Easily Make Self-Sensing Pneumatic Inverse Artificial Muscles

Biomimetics
Wearable mechatronics for powered orthoses, exoskeletons and prostheses require improved soft actuation systems acting as ‘artificial muscles’ that are capable of large strains, high stresses, fast response and self-sensing and that show electrically ...
Valentina Potnik, Gabriele Frediani, Federico Carpi   +2 more
doaj   +1 more source

Power-Efficient Soft Pneumatic Actuator Using Spring-Frame Collateral Compression Mechanism

Actuators, 2022
With the ongoing research on soft robots, the performance of soft actuators needs to be enhanced for more wide robotic applications. Currently, most soft robots based on pneumatic actuation are capable of assisting small systems, but they are not fully ...
Sungjun Kim, Seung Ryeol Lee, Sinyoung Lee, Dongun Lee, Dongjun Shin   +4 more
doaj   +1 more source

FPGA Controlled Pneumatic Variable Valve Actuation [PDF]

, 2006
A control system for pneumatic variable valve actuation has been designed, implemented and tested in a single cylinder test engine with valve actuators provided by Cargine Engineering AB.
Sasa Trajkovic, Trajkovic, Sasa, Alexandar Milosavljevic, Bengt Johansson, Tunestål, Per, Per Tunestål, Johansson, Bengt, Milosavljevic, Alexandar   +7 more
core   +1 more source

Standardized Effect Measures Informing Next‐Generation Strategies for Mechanical Stimulation in Cartilage Tissue Engineering

Advanced Healthcare Materials, EarlyView.
This systematic review quantitatively compares conventional mechanical stimulation strategies in cartilage tissue engineering across 85 heterogeneous in vitro studies. Applying standardized effect measures, meta‐analysis reveals that combined compression and shear loading optimally promotes cartilage matrix development.
Jiaqi K. Shen, Tony B. Huang, Catherine E. Davey, Elias Salzer, Gerjo J. V. M. Van Osch, Sandra J. Shefelbine, Marcus G. Pandy, Kathryn S. Stok   +7 more
wiley   +1 more source

Microgel‐Based 3D Bioprinting: A Convergent Strategy Integrating Material Design, Jamming Dynamics, and Biological Function

Advanced Healthcare Materials, EarlyView.
Microgel‐based 3D printed constructs represent a compelling and versatile innovation for engineering architecturally complex, dynamically remodelable, and biocompatible structures with high structural fidelity and bioactivity. By integrating material design, biofabrication, and biological function, these systems enable the development of adaptive ...
Elena Ghighină, Andreea Ioana Dinu, Jana Ghițman   +2 more
wiley   +1 more source

A piezoelectric microvalve for compact high frequency high differential pressure micropumping systems

, 2003
A piezoelectrically driven hydraulic amplification microvalve for use in compact high-performance hydraulic pumping systems was designed, fabricated, and experimentally characterized. High-frequency, high-force actuation capabilities were enabled through
Steyn, J.L., Roberts, D.C., Yaglioglu, O., Hagood, N.W., Schmidt, M.A., Spearing, S.M., Li, H.   +6 more
core   +1 more source