Results 101 to 110 of about 56,879 (283)

Modelling of cup anemometry and dynamic overspeeding in average wind speed measurements [PDF]

open access: yesAtmospheric Measurement Techniques
Cup anemometers measure average wind speed in the atmosphere and have been used for one and a half centuries by meteorologists. Within the last half century, cup anemometers have been used extensively in wind energy to measure wind resources and ...
T. F. Pedersen, J.-Å. Dahlberg
doaj   +1 more source

Anti-backlash circuit for hydraulic drive system Patent [PDF]

open access: yes, 1966
Antibacklash circuit for hydraulic drive ...
Acord, J. D.
core   +1 more source

Design of a Reconfigurable Microfluidic System Enabled by Magnetic Miniature Robots

open access: yesAdvanced Intelligent Systems, EarlyView.
Magnetic miniature robots are integrated into microfluidic chips to achieve real‐time reconfiguration. By external magnetic actuation, the robots perform sorting, mixing, flow regulation, and bubble removal on demand. This versatile platform eliminates the need for complex on‐chip hardware and enables adaptive control for biological and chemical ...
Yuanhe Chen   +3 more
wiley   +1 more source

Analysis of Drag Torque Characteristic of Hydro-viscous Clutch with Consideration of Cavitation Effect

open access: yesJixie chuandong, 2018
In order to accurately predict the internal flow field and drag torque characteristics of the hydro-viscous clutch,with the flow field of double circular groove clearance as the research object,based on the principle of hydrodynamics and the Newtonian ...
Sun Chunlian
doaj  

Control of VTOL Vehicles with Thrust-direction Tilting

open access: yes, 2013
An approach to the control of a VTOL vehicle equipped with complementary thrust-direction tilting capabilities that nominally yield full actuation of the vehicle's position and attitude is developed.
Hamel, Tarek   +2 more
core   +1 more source

Torque and drag analysis

open access: yes
Summarization: Drilling through the subsurface is a complex operation and problems are almost guaranteed to occur. Therefore, understanding and anticipating drilling problems, understanding their causes and planning solutions are necessary for successfully reaching the target. The most prevalent drilling problems include pipe sticking, lost circulation,
Azeez Mustafa(http://users.isc.tuc.gr/~mazeez)   +1 more
openaire   +1 more source

Multimodal Locomotion of Soft Robots

open access: yesAdvanced Intelligent Systems, EarlyView.
This review comprehensively surveys recent advances in multimodal locomotion within soft robotics. Typical locomotion modes are summarized and categorized. Furthermore, the underlying mechanisms enabling multimodal locomotion are discussed and classified into three primary categories: active control‐based, reconfiguration‐based, and environment ...
Zihao Yuan   +4 more
wiley   +1 more source

Contact Force Estimation of Continuum Robots without Embedded Sensors: A Review

open access: yesAdvanced Intelligent Systems, EarlyView.
This review surveys methods for estimating contact forces in continuum robots without embedded sensors. It explains why contact force matters, classifies force patterns, and groups existing methods into three approaches based on actuation, deformation, and environment information.
An Hu, Yu Sun
wiley   +1 more source

Anatomy of a bearing torque problem [PDF]

open access: yes
In the early 1970s, an antenna despin drive was developed for MBB solar science satellite HELIOS. A problem with high bearing drag torque that was encountered on the two flight models of this drive, after successful tests were completed on twelve ...
Phinney, Damon D.
core   +1 more source

Design Challenges to Expand the Functionality of Drones: Deformable Rotorcraft and Nature‐Inspired Flapping Drones

open access: yesAdvanced Intelligent Systems, EarlyView.
This review systematically analyzes deformable drones, including extendable, foldable, and tilting configurations, along with nature‐inspired flapping rotorcraft. By classifying deformation principles and structural mechanisms, design trade‐offs, functional capabilities, and future development potential are highlighted.
Ju‐Hee Lee   +9 more
wiley   +1 more source

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