Results 71 to 80 of about 79,696 (330)

Impact of double-logarithmic electroweak radiative corrections on the non-singlet structure functions at small x

, 2007
In the QCD context, the non-singlet structure functions of u and d -quarks are identical, save the initial quark densities. Electroweak radiative corrections, being flavor-dependent, bring further difference between the non-singlets.
B.I Ermolaev, B.I. Ermolaev, B.I. Ermolaev, G. Altarelli, S.I Troyan, V.G. Gorshkov, V.G. Gorshkov, V.G. Gorshkov, V.G. Gorshkov, V.N. Gribov, V.V. Sudakov, Y.L. Dokshitzer   +11 more
core   +1 more source

Nonlocomotory Robotic Strategies for Dynamic Rotation Control in Terrestrial Robots: A Review

Advanced Robotics Research, EarlyView.
Terrestrial robots increasingly require rapid body rotation to maintain stability and agility in complex environments. This review shows nonlocomotory rotational control strategies that operate without ground contact, including reaction wheels, tails, bars, limbs, and thrusters.
Y. Liang, J. An, X. Zheng, D. Wang, S. Wang, X. Wang, P. Zhu, J. Pei, S. Li, J. Paripurana, Y. Han, Z. Tang, X. Gan, Q. He, X. Ma   +14 more
wiley   +1 more source

Forward Position Solution of Redundantly Constrained Cable-driven Parallel Robot

Jixie chuandong, 2020
An algorithm for solving the forward position solution problem of the parallel robot based on Levenberg-Marquardt method is proposed. A kinematics model of a redundantly constrained cable-driven parallel robot is established，and the mechanism is ...
Tao Ye, Zhang Shangying, Wang Yanwei
doaj  

Forward and inverse kinematics of double universal joint robot wrists [PDF]

A robot wrist consisting of two universal joints can eliminate the wrist singularity problem found on many individual robots. Forward and inverse position and velocity kinematics are presented for such a wrist having three degrees of freedom.
Williams, Robert L., II
core   +1 more source

Multidirectional Motion Strategy of Miniature Water Surface Robot Actuated by Single Exciter

Advanced Robotics Research, EarlyView.
A novel multidirectional motion strategy on the water surface based on a single exciter is proposed, and a single‐exciter single‐plate module is developed for actuation. The driving forces generation mechanism of the module is revealed from the perspective of the asymmetric surface wave field.
Haoxuan He, Dehong Wang, Jing Li, Shijing Zhang, Yingxiang Liu   +4 more
wiley   +1 more source

Pose consensus based on dual quaternion algebra with application to decentralized formation control of mobile manipulators

, 2019
This paper presents a solution based on dual quaternion algebra to the general problem of pose (i.e., position and orientation) consensus for systems composed of multiple rigid-bodies.
Adorno, Bruno V., Pimenta, Luciano C. A., Savino, Heitor J., Shah, Julie A.   +3 more
core   +1 more source

Identifying Physical Interactions in Contact‐Based Robot Manipulation for Learning from Demonstration

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, Herman van der Kooij, Douwe Dresscher, Mark Vlutters   +3 more
wiley   +1 more source

Research on Solving the Excavation Pose of Shield Machine based on Neural Network-Newton Hybrid Algorithm

Jixie chuandong, 2021
In order to solve the problems such as the kinematics modeling of the shield machine propulsion system and the difficulty of forward solution， the simplified equivalent model method is adopted to construct a simplified model of the shield machine ...
Qiang Zhang, Dongchen Qin, Qiang Zhu, Jiangyi Chen   +3 more
doaj  

Study on numerical solution of wrist offset Pieper robot for mining with prismatic link based on new method

矿业科学学报, 2020
The offset wrist robot with prismatic link for mining equipment can withstand large loads and has a large operating range.In this paper, this type of robot is studied, and two characteristics of its architecture are found.One is that the solution for the
Yao Haifeng, Liu Wei, Zheng Xiaowen, Zhang Lansheng, Liu Fuxin, Wu Miao   +5 more
doaj   +1 more source

Forward and Inverse Kinematics Solution of A 3-DOF Articulated Robotic Manipulator Using Artificial Neural Network [PDF]

, 2023
Abdel‐Nasser Sharkawy, Shawkat Sabah Khairullah   +1 more
openalex   +1 more source