Results 11 to 20 of about 6,838,442 (240)

Forward Kinematics and Singularity Analyses of an Uncoupled Parallel Manipulator by Algebraic Screw Theory

open access: yesIEEE Access, 2022
In this contribution, the Jacobian analysis of a four-legged six-degrees-of-freedom decoupled parallel manipulator is carried out through the screw theory. As an intermediate step, for the sake of completeness the inverse/forward displacement analysis as
J. Gallardo-Alvarado   +4 more
semanticscholar   +1 more source

Kinematics modeling of redundant manipulator based on screw theory and Newton-Raphson method

open access: yesJournal of Physics: Conference Series, 2022
In this paper, forward kinematics and inverse kinematicsis algorithms are proposed to solve the problem that the redundant manipulator has more freedom than the traditional manipulator and cannot directly solve the inverse kinematics analytical solution.
Dawei Ge
semanticscholar   +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

Screw theory-based stiffness analysis for a fluidic-driven soft robotic manipulator

open access: yesIEEE International Conference on Robotics and Automation, 2021
Soft robotic manipulators have been created and investigated for a number of applications due to their advantages over rigid robots. In minimally invasive surgery, for instance, soft robots have successfully demonstrated a number of benefits due to the ...
Jialei Shi   +6 more
semanticscholar   +1 more source

Screw Theory and Its Application to Spatial Robot Manipulators

open access: yes, 2022
Discover a fresh take on classical screw theory and understand the geometry embedded within robots and mechanisms with this essential text. The book begins with a geometrical study of points, lines, and planes and slowly takes the reader toward a mastery
Carl D. Crane III, M. Griffis, J. Duffy
semanticscholar   +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

Simplified theory of Archimedean screws [PDF]

open access: yesJournal of Hydraulic Research, 2009
The Archimedean screw pump is one of the oldest hydraulic machines. Today, it is employed in pumping as well as - operating in reverse - in an energy conversion role. Despite its age, no consistent theory links the screw's geometry with its mechanical efficiency. Based on geometrical parameters and an idealised energy conversion process for one turn of
Muller, Gerald, Senior, James
openaire   +1 more source

pyScrew4Mobility: Modul Python untuk Penentuan Mobilitas Manipulator Paralel Berbasis Teori Screw

open access: yesMetal: Jurnal Sistem Mekanik dan Termal, 2020
This paper addresses the mobility determination of parallel manipulators (PMs) using screw theory with algebra methods on an open-source computer algebra package: Sympy (symbolic python).
Adriyan Adriyan
doaj   +1 more source

Actuation Spaces Synthesis of Lower-Mobility Parallel Mechanisms Based on Screw Theory

open access: yes, 2021
The lower-mobility parallel mechanism has been widely used in the engineering field due to its numerous excellent characteristics. However, little work has been devoted to the actuator selection and placement that best satisfy the system’s functional ...
Shihua Li   +3 more
semanticscholar   +1 more source

The melting performance of single screw extruders. II [PDF]

open access: yes, 1981
In the previous paper (1) the melting performance of a number of recent screw designs was analyzed, using a rather simple theory. A new screw design was proposed.
Dekker   +8 more
core   +9 more sources

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