Results 121 to 130 of about 1,417,989 (292)
Measurement of starting torque in surface tensionself-assembly of microstructures
Electronics Letters, 2001 The torque available at the start of out-of-plane rotation in surface tension powered self-assembly of microstructures is measured by deformation of an elastic spring. Values confirm to theoretical estimates and show that surface tension torque can overwhelm the gravitational counter-torque for realistic components in the microstructure size regime.
openaire +1 more source
Collision‐Resilient Winged Drones Enabled by Tensegrity Structures
Advanced 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
Advanced Robotics Research, EarlyView.Robots can learn manipulation tasks from human demonstrations. This work proposes a versatile method to identify the physical interactions that occur in a demonstration, such as sequences of different contacts and interactions with mechanical constraints.
Alex Harm Gert‐Jan Overbeek +3 more
wiley +1 more source
Iranian Journal of Electrical and Electronic Engineering, 2020 Single-phase induction motors have a wide range of domestic and industrial applications. These motors have a squirrel cage rotor and their stator usually has two windings: main and auxiliary.
H. Shadfar, H. R. Izadfar
doaj
Avaliação do contra-torque e do desgaste de conexões de implantes dentários após imersão em biofilme [PDF]
, 2015 Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências da Saúde, Programa de Pós-Graduação em Odontologia, Florianópolis, 2015.No tratamento com próteses sobre implantes, muitas vezes é preciso substituir o parafuso do pilar ...
Prado, Abraão Moratelli
core
Asymmetry in Skipping Enhances Viability Against Control Input Noise
Advanced Robotics Research, EarlyView.Quadruped animals use asymmetric galloping gaits at high speeds, yet the functional role of this asymmetry remains unclear. This study shows that left–right asymmetry in touchdown angles enhances robustness to control noise. Using a simple two‐legged locomotion model and viability theory, it demonstrates that asymmetric skipping substantially enlarges ...
Yuichi Ambe, Alvin So, Shinya Aoi
wiley +1 more source
Continuum Mechanics Modeling of Flexible Spring Joints in Surgical Robots
Advanced Robotics Research, EarlyView.A new mechanical model of a tendon‐actuated helical extension spring joint in surgical robots is built using Cosserat rod theory. The model can implicitly handle the unknown contacts between adjacent coils and numerically predict spring shapes from straight to significantly bent under actuation forces.
Botian Sun +3 more
wiley +1 more source
Tumbling Magnetic Microrobots for Targeted In Vivo Drug Delivery in the GI Tract
Advanced Robotics Research, EarlyView.We introduce a microrobot design and integrated system for on‐demand targeted drug release in the gastrointestinal tract. The microrobot has an embedded magnet for actuation with external magnetic fields and is visualized in real time using ultrasound. It has two drug release ports sealed with a thermally sensitive wax. Local heating of the wax using a
Aaron C. Davis +7 more
wiley +1 more source
Research of frequency division starting method based on six-pulse-wave AC/AC frequency converter
Gong-kuang zidonghua, 2013 Based on analysis of six-pulse-wave AC/AC frequency converter and according to principle of dual-slope voltage soft starting method, a frequency division starting method based on six-pulse-wave AC/AC frequency converter was put forward.
LI Gao-ju +3 more
doaj
Experimental Assessment of the Behaviour of TwinSpin Precision Reducers Under Low Temperatures
LubricantsThe present study investigates the influence of low temperatures on the starting torque, viscous friction, and power intensity of a precision cycloidal reducer TwinSpin TS 140-115-E-P19-0583.
Marek Kočiško +2 more
doaj +1 more source