Results 111 to 120 of about 3,832 (301)

Nonsilting transport characteristics of coal slurry in a deep underground fluidization conveying pipeline under the action of a guide vane swirler

Deep Underground Science and Engineering, EarlyView.
Aiming at the scientific frontiers of in situ fluidized mining of deep resources, a deep coal fluidized pipeline lifting system based on hydraulic conveying has been proposed. To solve the issue of particle sedimentation of large particles in horizontal connection sections, a solution involving the installation of guide vane‐type swirlers in the ...
Jiusheng Bao, Shaodi Zhao, Yan Yin, Zhongbin Wang, Shuai Liu, Shirong Ge   +5 more
wiley   +1 more source

Implementation of a fully variable valve actuation valvetrain

, 2011
In January 2008 the Sasol (Pty) Ltd Advisory Board identified that the Sasol Advanced Fuels Laboratory's (SAFL) single cylinder research engine was not in line with the current engine technologies, in particular Fully Variable Valve Actuation (FVVA ...
Jaffa, Steven
core  

Motion planning and control of an installation robot for attitude adjustment of arc parts in underground shield tunneling

Deep Underground Science and Engineering, EarlyView.
Inspired by spiders, the multilegged walk‐through assembling robot for arc parts achieves high‐precision synchronous control under heavy loads through dual‐layer hydraulic pose dynamics modeling and hierarchical pressure optimization, significantly enhancing shield tunneling assembly efficiency and precision.
Quan Xiao, Guofei Xiang, Liang Liao, Lai Wei, Hongli Wang, Songyi Dian   +5 more
wiley   +1 more source

FigS3 – Supplemental material for Modeling and analysis of hydraulic piston actuation of McKibben fluidic artificial muscles for hand rehabilitation

, 2019
Supplemental material, FigS3 for Modeling and analysis of hydraulic piston actuation of McKibben fluidic artificial muscles for hand rehabilitation by Anderson S Camp, Edward M Chapman and Paola Jaramillo Cienfuegos in The International Journal of ...
Paola Jaramillo Cienfuegos (7352579), Edward M Chapman (7352576), Anderson S Camp (7352573)   +2 more
core   +1 more source

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

Deep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu, Tao Li, Ruiqi Yuan, Yue Li, Bingni Wu, Bo Liu, Zhengding Deng, Galindo Rubén, Fausto Molina‐Gómez   +8 more
wiley   +1 more source

Electromechanical actuation for landing gear application: A case study on end-stroke impact in case of high speed free-fall emergency extension

, 2018
Current widespread R&D trend in aeronautics is the use of electromechanical actuators for primary and secondary flight controls and for landing gear applications, often stepping up from an already existing hydraulic or electrohydraulic actuation (EHA ...
Claudio Braccesi, Filippo Cianetti, Massimiliano Palmieri, Pispola Giulio   +3 more
core  

FigS4 – Supplemental material for Modeling and analysis of hydraulic piston actuation of McKibben fluidic artificial muscles for hand rehabilitation

, 2019
Supplemental material, FigS4 for Modeling and analysis of hydraulic piston actuation of McKibben fluidic artificial muscles for hand rehabilitation by Anderson S Camp, Edward M Chapman and Paola Jaramillo Cienfuegos in The International Journal of ...
Paola Jaramillo Cienfuegos (7352579), Edward M Chapman (7352576), Anderson S Camp (7352573)   +2 more
core   +1 more source

Seismic analysis and design of tunnels within fault ground: A review

Deep Underground Science and Engineering, EarlyView.
The research methods of seismic response of tunnels within fault ground, including field investigations, analytical solutions, physical experiments, and numerical simulations, and seismic countermeasures are discussed. The present study examines the shortcomings and limitations of the current research and design, and puts forward proposals for future ...
Xingda Wang, Yujing Jiang, Xuepeng Zhang, Yuyong Jiao, Ningbo Li, Xiao Wang, Bo Li   +6 more
wiley   +1 more source

Electro-Hydraulic Variable-Speed Drive Network Technology—First Experimental Validation

Energies
The improvement of the energy efficiency of hydraulic systems remains an essential challenge for industry, and the demand for more sustainable solutions is increasing.
Lasse Schmidt, Mikkel van Binsbergen-Galán   +1 more
doaj   +1 more source

Switching sliding mode force tracking control of piezoelectric-hydraulic pump-based friction element actuation systems for automotive transmissions [PDF]

, 2009
In this study, a nonlinear sliding-mode controller is designed for force tracking of a piezoelectric-hydraulic pump (PHP)-based actuation system, which is developed to replace the current electro-hydraulic actuation systems for automatic transmission (AT)
Kim, Gi-Woo, Wang, K. W.
core