Results 41 to 50 of about 268,948 (168)
A combined model reference adaptive control law for multirotor UAVs
IET Control Theory & Applications, 2021 Model reference adaptive control (MRAC) offers the potential to adapt in real‐time to changes in the performance of small unmanned air vehicles. There are significant challenges with their use, however, primarily in the implementation and assurance of ...
Alia Farhana Abdul Ghaffar +2 more
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IET Control Theory & Applications, 2021 An asymptotic output feedback controller for the hydraulic systems with model uncertainty compensation and prescribed performance is proposed here, where state observers, funnel function and nonlinear adaptive controller are integrated via backstepping ...
Zhangbao Xu +4 more
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Multi‐variable finite‐time observer‐based adaptive‐gain sliding mode control for fixed‐wing UAV
IET Control Theory & Applications, 2021 This paper presents a multivariable finite‐time observer‐based adaptive‐gain sliding mode control scheme for a fixed‐wing unmanned aerial vehicle (UAV) subject to the unmeasurable angular rates and unknown matched/unmatched disturbance.
Chaofan Zhang, Guoshan Zhang, Qi Dong
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Vegetation and Topographic Control on Spatial Variability of Soil Organic Carbon
Pedosphere, 2013 Abstract Soil organic carbon (SOC) is one of the most important parameters affecting the hydraulic characteristics of natural soils. Despite being rather easy to measure, SOC is known to be highly variable in space. In this study, vegetation, climate, and morphology factors were used to reproduce the spatial distribution of SOC in the mineral ...
OUESLATI, INES +3 more
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COLLINEAR CONTROL OF OSCILLATION MODES OF SPATIAL DOUBLE PENDULUM WITH VARIABLE GAIN
Cybernetics and Physics, 2021 This article is devoted to the study of controlled movements of spatial double pendulum with non-parallel cylindrical joints axes. The collinear control is used to swinging of the system by feedback. The most important property of collinear control is the ability of increasing system oscillations only on one oscillation mode.
Alexey Smirnov, Boris Smolnikov
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Non‐linear adaptive tracking control for quadrotor aerial robots under uncertain dynamics
IET Control Theory & Applications, 2021 This paper presents the design, analysis, and implementation of an adaptive backstepping controller for underactuated quadrotors to track time‐varying trajectories with parameter uncertainties.
Yen‐Chen Liu, Tsung‐Wei Ou
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Spatial and temporal variability in cyanobacterial populations controlled by physical processes [PDF]
Journal of Plankton Research, 2004 The Fitzroy impoundment is a long slender water body (10 m deep) formed by the regulation of the Fitzroy River in tropical Australia. Large, monsoonally driven discharges in late summer flush the impoundment repeatedly leaving, after 2 months, a longitudinally uniform, well-mixed water column, rich in dissolved nutrients and with high turbidity.
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IET Control Theory & Applications, 2021 This paper investigates robust path tracking issue of the four‐wheel independent driven robot (FWIDR) under time‐varying system uncertainties and unavoidable external disturbances.
Xiaolong Zhang +5 more
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Frontiers in Veterinary Science, 2022 From 2003 to 2017, highly pathogenic avian influenza (HPAI) epidemics, particularly H5N1, H5N8, and H5N6 infections in poultry farms, increased in South Korea.
Dae-sung Yoo +7 more
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Spatial variability and directional shifts in postural control in Parkinson’s disease
Clinical Parkinsonism & Related DisordersIndividuals with Parkinson's disease exhibit tremors, rigidity, and bradykinesia, disrupting normal movement variability and resulting in postural instability. This comprehensive study aimed to investigate the link between the temporal structure of postural sway variability and Parkinsonism by analyzing multiple datasets from young and older adults ...
Damian G. Kelty-Stephen +3 more
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