Results 41 to 50 of about 22,464 (227)
Experimental comparison between proportional and PWM-solenoid valves controlled servopneumatic positioning systems [PDF]
, 2017 The performance of the Dynamical Adaptive Backstepping-Sliding Mode Control (DAB-SMC) scheme for positioning of a pneumatic cylinder regulated by two types of PWM-solenoid valves is experimentally investigated.
Abd. Rahman, Ramhuzaini +1 more
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Deep Underground Science and Engineering, EarlyView.Based on experimental results and theoretical analysis, an established rock damage accumulation model that comprehensively considers the preapplied static load, impact peak value, impact frequency, and impact times. Abstract To study the rock damage mechanism under high static loading and superimposed medium strain rate cyclic impact loading, a series ...
Wei Wang +6 more
wiley +1 more source
IEEE Access, 2019 The performance of the pneumatic elements and the micro-controller steadily increases as the price of them decreases. This trend promotes high performance tracking control research on pneumatic servo systems. However, it is very difficult to obtain exact
Hai-Peng Ren +3 more
doaj +1 more source
Mechanically limited, electrically operated hydraulic valve system for aircraft controls Patent [PDF]
, 1959 Development of aircraft control system with high performance electrically controlled and mechanically operated hydraulic valves for precise flight ...
Foster, J. V.
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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
Hydraulic Actuator System for Rotor Control [PDF]
, 1991 In the last ten years, several different types of actuators were developed and fabricated for active control of rotors. A special hydraulic actuator system capable of generating high forces to rotating shafts via conventional bearings is addressed.
Althaus, Josef, Ulbrich, Heinz
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Deep Reinforcement Learning‐Based Control for Real‐Time Hybrid Simulation of Civil Structures
International Journal of Robust and Nonlinear Control, EarlyView.ABSTRACT Real‐time Hybrid Simulation (RTHS) is a cyber‐physical technique that studies the dynamic behavior of a system by combining physical and numerical components that are coupled through a boundary condition enforcer. In structural engineering, the numerical components are subjected to environmental loads that become dynamic displacements of the ...
Andrés Felipe Niño +6 more
wiley +1 more source
Dynamic Modelling of Critical Infrastructures for Improved Disaster Habitation Recovery
Systems Research and Behavioral Science, EarlyView.ABSTRACT Natural disasters damage infrastructure systems that support housing habitability, leading to population displacement. Recovery efforts speed up infrastructure capacity restoration and, thereby, rehabitation by displaced residents. Current recovery policy analysis methods focus on individual infrastructure systems or overall community recovery
Benjamin C. Ozumba, David N. Ford
wiley +1 more source
Analysis of the jet pipe electro-hydraulic servo valve with finite element methods
MATEC Web of Conferences, 2018 The dynamic characteristics analysis about the jet pipe electro-hydraulic servo valve based on experience and mathematical derivation was difficult and not so precise.
Kaiyu Zhao +4 more
doaj +1 more source
Experimental research of flow servo-valve [PDF]
EPJ Web of Conferences, 2017 Positional control of pneumatic drives is particularly important in pneumatic systems. Some methods of positioning pneumatic cylinders for changeover and tracking control are known. Choking method is the most development-oriented and has the greatest potential.
openaire +2 more sources