Results 31 to 40 of about 3,030 (185)

A Physics‐Informed Koopman Operator Framework for Decentralized Discrete‐Time Sequential Control of a Modular Aerial Parcel Delivery Robot

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT This paper presents a Physics‐Informed Koopman Operator (PIKO) framework integrated with a discrete‐time Sequential Action Control (SAC) for real‐time, decentralized control of a modular aerial parcel delivery robot composed of multiple independently actuated propeller modules.
Archit Krishna Kamath   +2 more
wiley   +1 more source

Scaling turbulence drives the general circulation

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
The NOAA Gulfstream SP4, which deployed the GPS dropsondes over the NE Pacific Ocean as part of the Winter Storms Project during the January–March periods of 2004, 2005 and 2006. Abstract Statistical multifractal analysis of airborne and dropsonde observations is used to show that persistence of velocity after molecular collisions breaks the continuous
Adrian F. Tuck
wiley   +1 more source

Observer-Based Autopilot Heading Finite-Time Control Design for Intelligent Ship with Prescribed Performance

open access: yesJournal of Marine Science and Engineering, 2021
Traffic engineering control is a major challenge in marine transportation. Cost efficiency and high performance demand advanced technologies for the ship control systems.
Liyan Zhu, Tieshan Li
doaj   +1 more source

The presentation of the ARTA CanSat design and construction process at the CANSAT International Competition in Iran [PDF]

open access: yesفصلنامه علوم و فناوری فضایی, 2020
The CANSAT design, a simple and small scale of a satellite, is an experience for preparing for the design of a Life cycle of the space project. In this paper, the process of design and construction of ARTA CanSat, which is participated in the scientific ...
Amirhossain Adami   +8 more
doaj   +1 more source

Unmanned Aerial Systems for Corrosion Detection: Multi‐Sensor Technologies, Challenges, and Opportunities for Next‐Generation Inspection

open access: yesQuality and Reliability Engineering International, EarlyView.
ABSTRACT Corrosion remains a critical threat to the integrity and service life of infrastructure in industries such as oil, gas, construction, renewable energy, and transportation. Traditional inspection methods, being labor‐intensive, hazardous, and often subjective, fall short in addressing modern inspection demands.
Alhossein Alharbi   +3 more
wiley   +1 more source

Future studies in Charting a Sustainable Path in quad-rotor Flying Robot using the Fuzzy Controller and pso [PDF]

open access: yesآینده‌پژوهی دفاعی, 2019
Unmanned aircraft (UAV) refers to flying devices remotely or by internal direct and control the autopilot. They can be different types of accessories such as cameras, sensors and communications equipment to carry these birds are able to perform ...
Ali Ayoobi, Hamid reza Ghaffary
doaj   +1 more source

Application of Kalman Filter to Improve 3D LiDAR Signals of Autonomous Vehicles in Adverse Weather

open access: yesApplied Sciences, 2021
A worldwide increase in the number of vehicles on the road has led to an increase in the frequency of serious traffic accidents, causing loss of life and property.
Shih-Lin Lin, Bing-Han Wu
doaj   +1 more source

Sliding Mode Control in Aerospace Applications: A Survey

open access: yesInternational Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT Sliding mode control (SMC) enjoys robustness to matched and unmatched (in the case of minimum phase input‐output dynamics) bounded perturbations, and finite time convergence. Second‐order and higher‐order sliding mode control systems (2‐SMC/HOSMC) retain all the advantages of sliding mode control, but in addition can be applied to systems of ...
Yuri Shtessel, Christopher Edwards
wiley   +1 more source

Robust autopilot of the pitch channel of unmanned aircraft vehicles

open access: yesДоклады Белорусского государственного университета информатики и радиоэлектроники, 2019
Automatic pitch control system of unmanned aircraft vehicles (UAVs) with different aerodynamic configuration and airframe construction is reflected here. Robust autopilot scheme is proposed for such control system. While adjusting the parameters of UAV’s
Yu. V. Gridnev, A. G. Ivanov
doaj  

Economic Impact of Semi-Mechanized Transplanting In Coffee Farming: Comparison of Operational Costs Between Conventional Systems and Systems with Autopilot and Time Updates

open access: yesAgriEngineering
Studies related to the mechanization of coffee transplanting combined with precision agriculture techniques demonstrate a need to verify the quality of the operation to optimize future production processes in the field and reduce costs.
Rosalra Maria Alves de Morais   +4 more
doaj   +1 more source

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