Results 111 to 120 of about 1,737,791 (396)

Experimental research on the electric vacuum gyro Final technical report [PDF]

open access: yes
Electronic circuitry for suspending electric vacuum gyro rotor in center of electrode ...

core   +1 more source

Vision‐Assisted Avocado Harvesting with Aerial Bimanual Manipulation

open access: yesAdvanced Robotics Research, EarlyView.
This work outlines the design and implementation of a bimanual aerial robot that employs visual perception and learning to detect, reach, and harvest avocados. A new gripper and fixer arm assembly is used to harvest avocados, while visual perception enables the detection of avocados and estimation of their position and orientation for determining ...
Zhichao Liu   +3 more
wiley   +1 more source

Multi-rotor helicopter type platform capacities research

open access: yesНаучный вестник МГТУ ГА, 2019
The development of multi-rotor helicopter concepts, driven by the active introduction of brushless electric motors, leads to the necessity of assessing the multi-rotor scheme main advantages implementing possibility and determining the rational areas of ...
V. I. Buzuluk   +2 more
doaj   +1 more source

An electroviscous damper [PDF]

open access: yes
A new type of vibration damper for rotor systems was developed and tested. The damper contains electroviscous fluid which solidifies and provides Coulomb damping when an electric voltage is imposed across the fluid.
Hoque, M. S., Nikolajsen, Jorgen L.
core   +1 more source

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

open access: yesAdvanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui   +5 more
wiley   +1 more source

Technical Damage in Wind Rotor Blade under Static Load at Environment Conditions

open access: yesChemical Engineering Transactions, 2014
Accidents with a wind rotor blade are frequently observed in the wind farms and the simulation study of its undesired damage and its full degradation has to be done. As usual the full degradation of the wind rotor blade happens in a sequence of appearing
W. Becker   +3 more
doaj   +1 more source

Torque control of switched reluctance motors [PDF]

open access: yes, 2011
This paper presents the performance of an instantaneous torque control method. The simulation and experimental results illustrate the capability of Switched Reluctance Motors (SRM) being used in the motor drive industry. Based on experimental data, the
García García, Alfonso   +3 more
core   +1 more source

Control of rotor torque and rotor electric power of a shaft-mounted electrical load in a mixed pole machine

open access: yesIET Electric Power Applications, 2009
A new operational mode for mixed-pole machines is presented. The proposed wound reluctance rotor machine can produce an n-phase rotor electric power from the rotor windings to a resistive or inductive load, independent of rotor torque, at any desired synchronous speed.
Abdel-Khalik, A.   +4 more
openaire   +2 more sources

TreeSpider: In‐Canopy Exploration With Tether‐Based Aerial Modular Arms

open access: yesAdvanced Robotics Research, EarlyView.
A tethered drone with perching arms and a 360° ring enables unprecedented maneuverability within dense forest canopies. By dynamically adjusting tether length and decoupling pitch from the frame, it navigates between branches, senses multiple trees, and interacts physically with foliage.
Luca Romanello   +7 more
wiley   +1 more source

Research of electric power regeneration using automotive cooling fan (Improvement of wind turbine efficiency by high solidity rotor)

open access: yesNihon Kikai Gakkai ronbunshu, 2015
This work aims at developing a new cooling fan for vehicle engine. This fan can operate as a cooling fan at low vehicle speed. At high vehicle speed, however, the fan is rarely used as a cooling fan. Therefore the fan can be used as a wind turbine, which
Shinichi ODA   +3 more
doaj   +1 more source

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