Results 1 to 10 of about 14,996 (162)

Pitch Invariance Reveals Skill-Specific Coordination in Human Movement: A Screw-Theoretic Reanalysis of Golf Swing Dynamics [PDF]

open access: yesJournal of Functional Morphology and Kinesiology
Background: Skilled human movement, such as the golf swing, emerges from coordinated rotational and translational dynamics. This study investigates pitch—a screw-theoretic invariant defined as the ratio of linear to angular velocity along the ...
Wangdo Kim
doaj   +2 more sources

Dynamic Modeling Method of Multibody System of 6-DOF Robot Based on Screw Theory

open access: yesMachines, 2022
An accurate dynamic model is a prerequisite for realizing precise control of industrial robots. The dynamics research of multi-degree of freedom (DOF) robots is relatively unexplored and needs to be solved urgently.
Jun Cheng   +5 more
doaj   +3 more sources

An Application of Screw Theory to the Jerk Analysis of a Two-Degrees-of-Freedom Parallel Wrist

open access: yesRobotics, 2015
In this work the velocity, acceleration, and jerk analyses of a two-degrees-of-freedom parallel wrist are approached by means of the theory of screws. For the sake of completeness, the finite kinematics of the manipulator is also investigated.
Jaime Gallardo-Alvarado   +3 more
doaj   +3 more sources

Non-Inertial Dynamic Analysis of 3-SPS/U Parallel Platform by Screw Theory and Kane’s Method

open access: yesActuators
This paper presents an improved method for the non-inertial dynamic analysis of the 3-SPS/U parallel platform (3-SPS/U PM), employing the screw theory and Kane’s method, where S, P, and U denote spherical, prismatic, and universal joints, respectively ...
Tianzhu Wang   +7 more
doaj   +3 more sources

Calculation Method of Bearing Capacity of Screw Pile Based on Unified Strength Theory

open access: yesShanghai Jiaotong Daxue xuebao, 2022
Based on the unified strength theory and the Terzaghi limit equilibrium theory, the ultimate bearing capacity of screw pile has been deduced. The method to determine the critical pitch and calculate the ultimate bearing capacity of the screw pile in two ...
MA Jiakuan, LUO Lijuan, REN Xiang, SHI Hang, YIN Yimo
doaj   +1 more source

A screw theory of static beams [PDF]

open access: yesProceedings 2001 IEEE/RSJ International Conference on Intelligent Robots and Systems. Expanding the Societal Role of Robotics in the the Next Millennium (Cat. No.01CH37180), 2002
We derive the deflection equation of a simple beam using the screw theory. The effects of tension, torsion and bending of the beam can be unified into a single equation. We begin by looking at the compliance matrix for small elements of the beam. This is loosely based on the work by von Mises (1924).
J. M. Selig, X. Ding
openaire   +1 more source

Novel Reconfigurable Spherical Parallel Mechanisms with a Circular Rail

open access: yesRobotics, 2022
The COVID-19 pandemic has placed unprecedented stress on the world healthcare system and demonstrated the need for modern automated robotic solutions for numerous medical applications.
Pavel Laryushkin   +3 more
doaj   +1 more source

Inverse Kinematics Analysis of Humanoid Robot Arm by Fusing Denavit–Hartenberg and Screw Theory to Imitate Human Motion With Kinect

open access: yesIEEE Access, 2023
The closed-form solution of each rotation joint angle is the most direct and convenient method for humanoid robot arms to imitate the real-time motion of the human arm.
Feifei Zhong   +5 more
doaj   +1 more source

Screw Analysis, Modeling and Experiment on the Mechanics of Tibia Orthopedic with the Ilizarov External Fixator

open access: yesMicromachines, 2022
The Ilizarov external fixator plays an important role in the correction of complex malformed limbs. Our purpose in this work was to reveal the transmission of adjustable forces between the external fixator and the broken bone, and express the stress ...
Peng Su   +4 more
doaj   +1 more source

A Screw Theory Approach to Computing the Instantaneous Rotation Centers of Indeterminate Planar Linkages

open access: yesRobotics, 2021
This paper presents a screw theory approach for the computation of the instantaneous rotation centers of indeterminate planar linkages. Since the end of the 19th century, the determination of the instantaneous rotation, or velocity centers of planar ...
Juan Ignacio Valderrama-Rodríguez   +3 more
doaj   +1 more source

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