Articles with "parallel mechanisms" as a keyword



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A class of novel 2T2R and 3T2R parallel mechanisms with large decoupled output rotational angles

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Published in 2017 at "Mechanism and Machine Theory"

DOI: 10.1016/j.mechmachtheory.2017.04.003

Abstract: Abstract This article focuses on the synthesis and analysis of a class of novel 2T2R (T denotes Translation and R denotes Rotation) and 3T2R parallel mechanisms (PMs) with large decoupled output rotational angles. Two articulated… read more here.

Keywords: 3t2r parallel; decoupled output; novel 2t2r; parallel mechanisms ... See more keywords

Design of a class of generalized parallel mechanisms with large rotational angles and integrated end-effectors

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Published in 2019 at "Mechanism and Machine Theory"

DOI: 10.1016/j.mechmachtheory.2018.12.027

Abstract: Abstract The generalized parallel mechanisms (GPMs) become a new feasible research topic to explore the advantages and overcome the shortcomings of the traditional parallel mechanisms (TPMs). This paper aims to address the challenge of the… read more here.

Keywords: integrated end; end effectors; parallel mechanisms; large rotational ... See more keywords

Stiffness modeling of overconstrained parallel mechanisms under considering gravity and external payloads

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Published in 2019 at "Mechanism and Machine Theory"

DOI: 10.1016/j.mechmachtheory.2018.12.031

Abstract: Abstract Difficulty and complexity of stiffness modeling of parallel mechanisms will be greatly increased under considering gravity of limbs. This paper presents a general method for stiffness modeling of overconstrained parallel mechanisms under considering gravity… read more here.

Keywords: stiffness modeling; considering gravity; modeling overconstrained; stiffness ... See more keywords

A geometric algebra algorithm for the closed-form forward displacement analysis of 3-PPS parallel mechanisms

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Published in 2019 at "Mechanism and Machine Theory"

DOI: 10.1016/j.mechmachtheory.2019.01.035

Abstract: Abstract This paper presents an efficient graphical representation geometric algebra approach for the forward displacement analysis (FDA) of 3-PPS parallel mechanisms (PMs). Our approach based on conformal geometric algebra (CGA) reveals interesting intuitions and insight… read more here.

Keywords: forward displacement; displacement analysis; geometric algebra; algebra ... See more keywords

A novel criterion for singularity analysis of parallel mechanisms

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Published in 2019 at "Mechanism and Machine Theory"

DOI: 10.1016/j.mechmachtheory.2019.03.001

Abstract: Abstract A novel criterion for singularity analysis of parallel robots is presented. It relies on screw theory, the 3-dimensional Kennedy theorem, and the singular properties of minimal parallel robots. A parallel robot is minimal if… read more here.

Keywords: singularity analysis; criterion; parallel mechanisms; novel criterion ... See more keywords
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Different Kinds of 3T2R Serial Kinematic Chains and Their Applications in Synthesis of Parallel Mechanisms

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Published in 2020 at "Mechanism and Machine Theory"

DOI: 10.1016/j.mechmachtheory.2019.103637

Abstract: Abstract This paper proposes a new-kind three-translational and two-rotational (3T2R) motion with one fixed and one variable rotation directions. The serial kinematic chains (SKCs) that generate the proposed motions are synthesized. They are quite different… read more here.

Keywords: different kinds; motion; serial kinematic; 3t2r motion ... See more keywords

Construction method of parallel mechanisms with a partially constant Jacobian matrix

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Published in 2020 at "Mechanism and Machine Theory"

DOI: 10.1016/j.mechmachtheory.2019.103699

Abstract: Abstract The Jacobian matrix plays an important role in the performance analysis, configuration design, planning and control of parallel mechanisms (PMs). PMs with a constant Jacobian have simple kinematics and are easy to analyse and… read more here.

Keywords: pms; jacobian matrix; constant jacobian; partially constant ... See more keywords
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Instantaneous mobility analysis using the twist space intersection approach for parallel mechanisms

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Published in 2020 at "Mechanism and Machine Theory"

DOI: 10.1016/j.mechmachtheory.2020.103866

Abstract: Abstract This paper focuses on instantaneous mobility analysis of parallel mechanisms using the twist space intersection approach. In this study, a nullspace-associated approach is first presented to determining the intersection of screw systems based on… read more here.

Keywords: intersection; mobility; analysis; parallel mechanisms ... See more keywords
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Modular modelling methodology applied to the dynamic analysis of parallel mechanisms

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Published in 2021 at "Mechanism and Machine Theory"

DOI: 10.1016/j.mechmachtheory.2021.104332

Abstract: Abstract Dynamic modelling is a comprehensive topic in the area of multibody systems. Particularly, for parallel mechanisms, a great number of approaches have already been proposed in the literature. From the perspective of parallel robot… read more here.

Keywords: methodology applied; methodology; modelling methodology; modular modelling ... See more keywords

A simple and visually orientated approach for type synthesis of overconstrained 1T2R parallel mechanisms

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Published in 2018 at "Robotica"

DOI: 10.1017/s0263574718000395

Abstract: SUMMARY This paper presents a simple and highly visual approach for the type synthesis of a family of overconstrained parallel mechanisms that have one translational and two rotational movement capabilities. It considers, especially, mechanisms offering… read more here.

Keywords: type synthesis; parallel mechanisms; approach type;

Symbolic position analysis for three 6-DOF parallel mechanisms and new insight

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Published in 2024 at "Robotica"

DOI: 10.1017/s0263574724000432

Abstract: Abstract The authors‘ previous research has demonstrated that parallel mechanisms (PMs) with hybrid branch chains (i.e., branch chains containing planar or spatial loops) can possess symbolic forward position (SFP) solutions and motion decoupling (MD). In… read more here.

Keywords: position analysis; branch; parallel mechanisms; position ... See more keywords