Results 51 to 60 of about 11,561 (230)

Disturbance observer–based nonlinear energy-saving control strategy for electro-hydraulic servo systems

open access: yesAdvances in Mechanical Engineering, 2017
Precise tracking performance and significant energy-saving effect are both important issues for electro-hydraulic servo system. Nevertheless, the electro-hydraulic servo system usually demonstrates inferior efficiency compared with other available ...
Weiping Wang, Bo Wang
doaj   +1 more source

Design and simulation of hydraulic shaking table [PDF]

open access: yes, 2006
Recent industrial progress and computational technology made it possible to construct more complex structures. Vibration of these structures due to seismic strength must be measured and proved to prevent them from damage when they are subjected to ...
Ngadimon, Khairulnizam
core  

Deterioration Mechanism of Fractured Coal–Rock Combined Body Under Coupled Chemical Corrosion and Time Effects

open access: yesGeofluids, Volume 2026, Issue 1, 2026.
Addressing the stability issues of coal mine underground reservoir dams caused by long‐term erosion from highly acidic/alkaline mine water, this study investigates the mechanical property deterioration of fractured coal–rock combined bodies under the action of solutions with different pH values (3, 5, 7, and 9) and immersion times (7–35 days) through ...
Liya Yu   +3 more
wiley   +1 more source

Research on the Control Method of Force Servo System of Liquid Hydrostatic Guide Oil Film Thickness Test Bench for Machine Tools

open access: yesShock and Vibration, 2022
The test bench was designed to solve the problem of measuring the oil film thickness of the liquid hydrostatic guideway of machine tools. And based on the fast overshoot of the classical PID control, introducing the self-antidisturbance control algorithm,
Xu Fang, Youmin Wang, Bo Zhu
doaj   +1 more source

Improving Aircraft Engines Prognostics and Health Management via Anticipated Model-Based Validation of Health Indicators [PDF]

open access: yes, 2014
The aircraft engines manufacturing industry is subjected to many dependability constraints from certification authorities and economic background. In particular, the costs induced by unscheduled maintenance and delays and cancellations impose to ensure a
LAMOUREUX, Benjamin   +2 more
core   +6 more sources

Displacement and Vibration Measurements with Interferometers: Benchmark Configurations, Performance, and R&D Opportunities

open access: yesAdvanced Photonics Research, Volume 6, Issue 12, December 2025.
Self‐mixing interferometry is a powerful technique that brings together the exceptional sensitivity of phase measurements with the unequalled simplicity of the self‐mix configuration based on modulation of the cavity field induced by the return from the target. According to the selected measurand, displacement or vibration, and to the analog of digital
Silvano Donati
wiley   +1 more source

Study on damage and failure characteristics of loaded gas‐bearing rock–coal–rock combination structures

open access: yesDeep Underground Science and Engineering, Volume 4, Issue 4, Page 800-815, December 2025.
The influence of gas on the instability and failure of rock–coal–rock combinations is considered. The damage characteristics of gas‐bearing rock–coal–rock combinations under different confining pressures, axial loading rates, and gas are revealed. A constitutive model for gas‐bearing rock–coal–rock damage considering gas is established.
Feng Du   +8 more
wiley   +1 more source

Corrosion Inhibition Characteristics and Mechanical Properties of High‐Strength Galvanized Steel Wire in the Presence of N,N′‐Dimethylethanolamine

open access: yesEngineering Reports, Volume 7, Issue 12, December 2025.
This paper proposes N,N′‐DMEA to inhibit HSGSW corrosion, characterizes its induced mechanical degradation, and identifies the optimum N,N′‐DMEA ratio for HSGSW in cable‐stayed bridge structures. It offers a new technical approach for protecting bridge cable high‐strength steel wires.
Mingchun Yang   +6 more
wiley   +1 more source

Position Tracking Control of an Electro-Hydraulic Servo System Based on Nonlinear Disturbance Observers

open access: yesIEEE Access
In order to ensure a precisely controlled electro hydraulic servo system, a sliding mode control algorithm based on nonlinear disturbance observers (NDOB-SMC) is developed in this study.
Qingqing Xu   +3 more
doaj   +1 more source

Extended state observer–based fractional order proportional–integral–derivative controller for a novel electro-hydraulic servo system with iso-actuation balancing and positioning

open access: yesAdvances in Mechanical Engineering, 2015
Aiming at balancing and positioning of a new electro-hydraulic servo system with iso-actuation configuration, an extended state observer–based fractional order proportional–integral–derivative controller is proposed in this study. To meet the lightweight
Qiang Gao   +4 more
doaj   +1 more source

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