Results 31 to 40 of about 16,016 (218)

The Railway 4.0 Concept – the vision of a digital railway in the Czech Republic (CR)

open access: yesActa Polytechnica CTU Proceedings, 2022
The paper presents a new alternative approach to the modernization of control and safety technologies on the railway network in the Czech Republic, referred to as the "The Railway 4.0 Concept".
Martin Leso
doaj   +1 more source

A machine learning approach for mapping the very shallow theoretical geothermal potential

open access: yesGeothermal Energy, 2019
The very shallow geothermal potential (vSGP) is increasingly recognized as a viable resource for providing clean thermal energy in urban and rural areas.
Dan Assouline   +3 more
doaj   +1 more source

Implications for (d,p) reaction theory from nonlocal dispersive optical model analysis of $^{40}$Ca(d,p)$^{41}$Ca [PDF]

open access: yes, 2016
The nonlocal dispersive optical model (NLDOM) nucleon potentials are used for the first time in the adiabatic analysis of a (d,p) reaction to generate distorted waves both in the entrance and exit channels.
Timofeyuk, N. K., Waldecker, S. J.
core   +2 more sources

A New Approach to Nonlinear State Observation for Affine Control Dynamical Systems

open access: yesApplied Sciences, 2023
In this work, a Nonlinear Higher Order Extended State Observer (NHOESO) is presented to replace the Linear Extended State Observer (LESO) used in Conventional Active Disturbance Rejection Control (C-ADRC) solutions.
Ahmad Taher Azar   +11 more
doaj   +1 more source

Representation theory for the Kriz model

open access: yes, 2012
The natural action of the symmetric group on the configuration spaces F(X; n) induces an action on the Kriz model E(X; n). The represen- tation theory of this DGA is studied and a big acyclic subcomplex which is Sn-invariant is described.Comment: 25 ...
Arnold   +7 more
core   +1 more source

Analysis and Control of Fault Ride-Through Capability Improvement for Wind Energy Conversion System Using Linear Active Disturbance Rejection Control With Correction Link

open access: yesIEEE Access, 2020
Wind energy, as a kind of renewable natural energy, is spread all over the world. It is one of the most widely used and promising green energy to adjust the energy structure. Therefore, wind energy conversion systems (WECSs) have captured a great deal of
Youjie Ma   +3 more
doaj   +1 more source

Fuzzy Adaptive Linear Active Disturbance Rejection Control for Quadrotor Load UAV Based on Kalman Filter

open access: yesIEEE Access, 2023
In order to solve the problem of load variation and nonlinear strong coupling of the quadrotor load unmanned aerial vehicle (UAV), this paper proposes a fuzzy adaptive linear active disturbance rejection control algorithm based on the Kalman filter (KFFA-
Yunpeng Ju, Yalin Zhang, Guixin Zhu
doaj   +1 more source

Key Technical Fields and Future Outlooks of Space Manipulators: A Survey

open access: yesSmartBot, EarlyView.
This paper systematically reviews the technological development of space manipulators, emphasizing the unique challenges posed by space environments. It examines four areas: structural design, modeling, planning, and control, while introducing typical ground test platforms.
Gang Chen   +12 more
wiley   +1 more source

Extended State Observer-Based Sliding Mode Control Design of Two-DOF Lower Limb Exoskeleton

open access: yesActuators, 2023
Due to some model uncertainties and unknown friction disturbances that exist in the 2-DOF lower limb exoskeleton, a linear extended state observer (LESO) is proposed to estimate the unmeasurable angular velocity of two joints and the lumped uncertainties
Jiyu Zhang, Wei Gao, Qing Guo
doaj   +1 more source

Spaceflight and sport science: Physiological monitoring and countermeasures for the astronaut–athlete on Mars exploration missions

open access: yesExperimental Physiology, EarlyView.
Abstract Long‐duration spaceflight impacts essentially every system in the human body, resulting in multisystem deconditioning that might impair the health and performance of crewmembers, particularly on long‐duration exploration missions to Mars. In this review, we apply the sport science model of athlete monitoring, testing and training to astronauts;
Luke DeVirgiliis   +8 more
wiley   +1 more source

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