Results 71 to 80 of about 15,341 (227)

Global and robust attitude control of a launch vehicle in exoatmospheric flight [PDF]

open access: yes, 2018
The goal of this research is to design global and robust attitude control systems for launch vehicles in exoatmospheric flight. An attitude control system is global when it guarantees that the vehicle converges to the desired attitude regardless of its ...
Celani, Fabio
core   +1 more source

Non-linear optimal control for multi-DOF electro-hydraulic robotic manipulators

open access: yesIET Cyber-systems and Robotics, 2020
A non-linear optimal (H-infinity) control approach is proposed for the dynamic model of multi-degree-of-freedom (DOF) electro-hydraulic robotic manipulators.
Gerasimos Rigatos   +4 more
doaj   +1 more source

Corrosion effect of hydrochloric acid on the granite: Insights from electrical conductivity, mineral composition, and tensile behavior

open access: yesDeep Underground Science and Engineering, EarlyView.
The evolution of electrical conductivity, mineral composition, and tensile behavior such as peak strength, average stiffness, and the energy evolution of the granite specimen under different HCl conditions are studied, analyzed as well as quantified, and investigated, respectively.
Yanan Gao   +5 more
wiley   +1 more source

Expert supervision of an anti-skid control system of a commercial aircraft [PDF]

open access: yes, 1996
A rule-based supervising system that incorporates fuzzy logic has been designed to back-up a conventional anti-skid braking system (ABS). Expressing the expert knowledge about the ABS in terms of linguistic rules, the supervising fuzzy system adapts the ...
Bordeneuve-Guibé, Joël   +3 more
core  

Stress analysis of crack characteristic of anthracite under dynamic loading

open access: yesDeep Underground Science and Engineering, EarlyView.
In this article, the dynamic compression test of anthracite under five strain rates is carried out, the evolution law of three kinds of crack characteristic stress is analyzed, and a prediction model of the crack characteristic stress threshold considering the strain rate effect is established. Then, the rationality of crack characteristic stress under
Yun Bai   +5 more
wiley   +1 more source

Влияние управления полем нагружения при электрогидравлической штамповке на повышение качества крупногабаритных листовых деталей [PDF]

open access: yes, 2011
Кратко описаны возможности влияния управления полем нагружения заготовки при последовательном локальном электрогидравлическом деформировании на технологическую наследственность листовых деталей.Briefly describes the ability to influence management field ...
Тараненко, М. Е.
core  

Characterization of the permeability evolution of hard and soft rocks under hydro‐mechanical coupling conditions

open access: yesDeep Underground Science and Engineering, EarlyView.
The permeability variation of rocks during complete stress–strain processes was investigated. A mathematical model describing the influence of rock damage on permeability was constructed. The permeability–stress relationship between soft rock and hard rock was proposed.
Zhen Huang   +6 more
wiley   +1 more source

Adaptive tracking electro-hydraulic drive

open access: yesMORSKIE INTELLEKTUAL`NYE TEHNOLOGII)</msg>, 2020
Статья посвящена исследованию возможностей снижения влияния параметрических возмущений на показатели назначения корабельного артиллерийского комплекса. Предложен закон адаптивного управления слежением в аналитической форме и способ его технической реализации для снижения чувствительности следящего электрогидравлического привода артиллерийского ...
openaire   +1 more source

Dynamic response at the terminus of oblique intersecting joints subjected to stress waves

open access: yesDeep Underground Science and Engineering, EarlyView.
This study derives the propagation equation for stress waves impinging upon nonlinear oblique intersecting joints. It analyzes the dynamic response at the terminus of nonlinear oblique intersecting joints subjected to stress waves. Abstract To investigate the dynamic response at the terminus of oblique intersecting joints subjected to stress waves, a ...
Gang Hu   +4 more
wiley   +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

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