Results 21 to 30 of about 58,412 (266)

Design and analysis of driving mechanism of flapping-wing aircraft based on space crank-swing rod mechanism

open access: yes上海师范大学学报. 自然科学版, 2022
In order to improve the flight performance of the flapping-wing aircraft,a novel multi-degree of freedom flapping-wing mechanism based on the space pendulum mechanism was designed by referring to the flight motion characteristics of living things.
FANG Yue, YANG Ye
doaj   +1 more source

Designing a User-Centered Inspection Device’s Handle for the Aircraft Manufacturing Industry

open access: yesApplied Sciences, 2023
In aircraft manufacturing settings, workers are frequently exposed to biomechanical risk factors, mainly in the later stages of the production processes, including inspection tasks.
Ana Colim   +7 more
doaj   +1 more source

Positive Torque Modulation Method and Key Technology of Conventional Beam Pumping Unit

open access: yesEnergies, 2022
The large fluctuation of net torque and the existence of negative torque on the crank output shaft of the beam pumping unit are the decisive factors leading to its low efficiency and high energy consumption.
Jinchao Xu   +3 more
doaj   +1 more source

Application of direct and inverse kinematics and dynamics in motion planning of manipulator links

open access: yesInternational Journal of Applied Mechanics and Engineering, 2023
For the synthesis of manipulators and robots, an accurate analysis of the movements of the individual links is essential. This thesis deals with motion planning of the effector of a multi-linked manipulator.
Ingrid Delyová   +5 more
doaj   +1 more source

Kinematic Analysis on the Serve Technique of Elite Tennis Player Grigor•Dimitrov Based on 3D Virtual Reality Technology

open access: yesMATEC Web of Conferences, 2016
By using three-dimensional video analysis, we made a kinematic analysis on Grigor Dimitrov’s Serve technique, aiming at finding the kinematic characteristics of his serve technique during various stages.
Du Chuan Jia, Zhou Ji He, Wang Shuai
doaj   +1 more source

The "Akopian" vault performed by elite male gymnasts: Which biomechanical variables are related to a judge's score?

open access: yesActa Gymnica, 2015
Background: A vaulting performance takes a short time and it is influenced by and affects the quantity of mechanical variables. The significant relationships between the vaulting score and specific aspects of the gymnast's vault should conduct coaches to
Roman Farana   +3 more
doaj   +1 more source

Kinematics and Performance Analysis of the 2T1R/1T2R Reconfigurable Decoupled Parallel Mechanism

open access: yesApplied Sciences
Based on the reconfigurable revolute (rR) pair, a reconfigurable decoupled parallel mechanism is proposed, which is composed of three serial chains. Traditional serial chain 1 and 2 are of types PRRR and URC, respectively, where P denotes a prismatic ...
Juan Liu   +4 more
doaj   +1 more source

Low Delay Control Algorithm of Robot Arm for Minimally Invasive Medical Surgery

open access: yesIEEE Access, 2020
Minimally invasive surgical robots have received more and more attention from medical patients because of their higher surgical accuracy and higher safety than doctors.
Xiumei Tian, Yan Xu
doaj   +1 more source

Model-Based Design of the 5-DoF Light Industrial Robot

open access: yesRobotics
With the application and rapid development of light industrial robots, it is vital to accelerate the prototype design to fulfill the demands of shortening the robot’s production cycle, owing to rapid update iterations. Since the traditional design method
Yongping Shi   +6 more
doaj   +1 more source

An Automated Tracking System of Fine Dust Generating Spot for Building Dismantlement Sites [PDF]

open access: yes한국정밀공학회지, 2019
Water spraying work to prevent the dust from scattering during building dismantling operation has usually been done manually. Since it is very risky and often causes fatal accidents due to unexpected collapse, a few countries have adopted mechanical ...
Seolha Kim   +3 more
doaj   +1 more source

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