Results 131 to 140 of about 40,379 (295)
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 +6 more
wiley +1 more source
SYNCHRONOUS HYDROMECHANICAL DRIVE OF MOBILE ACTUATOR AND ITS MATHEMATICAL MODEL
Вестник Донского государственного технического университета, 2018 A synchronous hydromechanical system of the mobile actuator is considered as an example of the brush drive system of the airport sweeper. It is proposed to equip the synchronous hydraulic machine drive with a throttle flow divider of not spool-type ...
Alan Ruslanovich Temirkanov +1 more
doaj
A Conceptual Comparison of Hydraulic and Electric Actuation Systems for a Generic Fighter Aircraft
AerospaceThis paper presents a methodology for evaluating different flight control actuation system architectures in the early conceptual design phase. In particular, this paper shows how hydraulic and electric actuators can be modeled even if very little is ...
Alessandro Dell’Amico +1 more
doaj +1 more source
Energy Science &Engineering, EarlyView.Fluidized gangue backfilling controls mining subsidence through stress redistribution in composite backfill‐pillar systems, reducing surface settlement and stress concentrations. Multi‐scale experimental and numerical analysis provides quantitative design parameters for optimizing ground control in sustainable underground coal mining operations ...
Weilong Zhang +11 more
wiley +1 more source
Foreign technology summary of flight crucial flight control systems [PDF]
, 1984 A survey of foreign technology in flight crucial flight controls is being conducted to provide a data base for planning future research and technology programs.
Rediess, H. A.
core +1 more source
Fire and Materials, EarlyView.ABSTRACT Heat induced delamination (HID) is a phenomenon in engineered wood products which may result in the detachment of the bonded timber lamellae before charring propagates to the bond line interphase. This study aims to correlate the thermal degradation of two 1‐c‐polyurethane adhesives at the microscale to the thermo‐hydro‐mechanical behaviour of
A. Čolić +4 more
wiley +1 more source
Design and Control of a Polycentric Knee Exoskeleton Using an Electro-Hydraulic Actuator. [PDF]
Sensors (Basel), 2019 Lee T, Lee D, Song B, Baek YS.
europepmc +1 more source
FlexMat, EarlyView.Abstract Soft robots, engineered from highly compliant materials, offer superior adaptability and safety in unstructured environments compared to their rigid counterparts. Recent advancements, fueled by bio‐inspiration and material programmability, have led to the rapid co‐evolution of their core modules: actuation, sensing, protection, energy, and ...
Qiulei Liu +3 more
wiley +1 more source
International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT Hydraulic manipulators exhibit strong coupling, pronounced nonlinearities, and significant modeling uncertainties, which hinder high‐precision motion control. This paper proposes a finite‐time disturbance observer–based nonlinear robust adaptive control (RAC‐FTDO) framework enhanced by a physically consistent dynamic parameter identification ...
Tianyu Gao +3 more
wiley +1 more source
Integrated Application of Active Controls (IAAC) technology to an advanced subsonic transpot project-demonstration act system definition [PDF]
The 1985 ACT airplane is the Final Active Controls Technology (ACT) Airplane with the addition of three-axis fly by wire. Thus it retains all the efficiency features of the full ACT system plus the weight and cost savings accruing from deletion of the ...
Crumb, C. B. +7 more
core +1 more source