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Design and analysis of partially decoupled translational parallel mechanisms with single-loop structures

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 3, doi: 10.1007/s11465-022-0695-1

Abstract: This study presents a family of novel translational parallel mechanisms (TPMs) with single-loop topological

Keywords： translational parallel mechanism     single loop     multiple driving system     workspace analysis     singularity    

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Design and analysis of the gripper mechanism based on generalized parallel mechanisms with configurable

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4,   Pages 765-781 doi: 10.1007/s11465-021-0655-1

Abstract: Generalized parallel mechanisms with a configurable moving platform have become popular in the researchfield of parallel mechanism.based on the generalized parallel mechanisms with a configurable moving platform.A family of novel gripper mechanisms can be assembled through the hybrid limbs by satisfying the ruleTwo examples of the gripper mechanisms with and without parallelogram pairs are shown in this study.

Keywords： generalized parallel mechanism     configurable moving platform     gripper mechanism     type synthesis     kinematic    

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Gripping mechanisms in current wood harvesting machines

D. GOUBET, J. C. FAUROUX, G. GOGU

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 1,   Pages 42-61 doi: 10.1007/s11465-013-0358-3

Abstract:

This paper focuses on the structural synthesis of gripping mechanisms used in the mechanization ofThis study distinguishes two kinds of planar gripping mechanisms mainly used in opening and closing theTwo planar and one spatial existing mechanisms are described.The last part of this paper presents a structural synthesis of such a spatial parallel mechanism by usingNine kinematic diagrams of spatial parallel mechanisms are provided.

Keywords： structural synthesis     parallel mechanisms     gripping mechanisms     wood harvesting     harvesting head    

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A redundantly actuated PRPRP radial mechanism in the segment erector of a shield machine for synchronization control

Wanghui BU, Zhenyu LIU, Jianrong TAN, Jin CHENG

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 4,   Pages 463-467 doi: 10.1007/s11465-011-0225-z

Abstract:

The shield machine is a heavy construction machine for tunnel excavation, and the segment erector is an important subsystem of the shield machine. It is difficult to achieve precise control in the 6-DOF (degree of freedom) erector in the 2-DOF 5-bar radial mechanism. Hence, this paper proposes a redundantly actuated PRPRP radial mechanism for the segment erector. When the redundant actuator is unlocked, the radial mechanism is able to adjust its posture, which has two degrees of freedom. On the other hand, when the redundant actuator is locked or produces enough pre-tightening tensile force, the PRPRP mechanism can ensure the synchronization of the two driving hydraulic cylinders along the radial direction based on the mechanical structure, which has one degree of freedom. The redundant actuator also facilitates the equal application of two flexural torques at the hydraulic cylinders; thus, preventing the overload of a single cylinder.

Keywords： redundant actuation     parallel mechanisms     five-bar mechanisms     segment erectors     shield machines    

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Active Control of Ocean Vehicle Multidimension Vibration and Motion

Chen Xiuxiang,Ma Lüzhong,Wu Weiguang,Zhu Wei

Strategic Study of CAE 2007, Volume 9, Issue 8,   Pages 52-56

Abstract:

Active control multi-dimension vibration device based on parallel mechanisms

Keywords： electromagnetic actuator     active control     multi-dimension vibration     parallel mechanisms    

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Comparison of internal force antagonism between redundant cable-driven parallel robots and redundantrigid parallel robots

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 4, doi: 10.1007/s11465-023-0767-x

Abstract: problem is one of the most important issues limiting the applications and popularization of redundant parallelRedundant cable-driven parallel robots (RCDPRs) and redundant rigid parallel robots (RRPRs) behave very

Keywords： cable-driven parallel robots     parallel robots     redundant robots     evaluation index     force solution space    

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Elevated temperature creep model of parallel wire strands

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 7,   Pages 1060-1071 doi: 10.1007/s11709-023-0981-y

Abstract: Parallel wire strands (PWSs), which are widely used in prestressed steel structures, are typically in

Keywords： parallel wire strands     experimental study     elevated temperature creep model    

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FOOD SYSTEMS TRANSFORMATION: CONCEPTS, MECHANISMS AND PRACTICES

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 1,   Pages 1-3 doi: 10.15302/J-FASE-2023491

Abstract: FOOD SYSTEMS TRANSFORMATION: CONCEPTS, MECHANISMS AND PRACTICES

Keywords： TRANSFORMATION     SYSTEMS     FOOD     CONCEPTS     MECHANISMS    

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Structural optimization of typical rigid links in a parallel kinematic machine

Xinjun LIU, Zhidong LI, Xiang CHEN

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3,   Pages 344-353 doi: 10.1007/s11465-011-0227-x

Abstract:

The motion dynamics and accuracy of parallel kinematic machines largely depend on the weights andwork employs the techniques of topology and size optimization to design two typical rigid links of a parallel

Keywords： topology optimization     size optimization     parallel kinematic machine (PKM)    

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Cusp points and assembly changing motions in the PRR-PR-PRR planar parallel manipulator

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 2, doi: 10.1007/s11465-022-0743-x

Abstract: Most parallel manipulators have multiple solutions to the direct kinematic problem.study investigates the cusp points and assembly changing motions in a two degrees of freedom planar parallel

Keywords： planar parallel manipulator     assembly changing motions     cusp points     quartic polynomial     discriminant    

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Variable identification and automatic tuning of the main module of a servo system of parallel mechanism

YANG Zhiyong, XU Meng, HUANG Tian, NI Yanbing

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 1,   Pages 82-88 doi: 10.1007/s11465-007-0014-x

Abstract: The variables of the main module of a servo system for miniature reconfigurable parallel mechanism were

Keywords： acceleration     reconfigurable parallel     additive     sequence     parallel mechanism    

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Toxicity mechanisms of photodegraded polyvinyl chloride nanoplastics on pea seedlings

Frontiers of Environmental Science & Engineering 2024, Volume 18, Issue 4, doi: 10.1007/s11783-024-1809-2

Abstract:

● Photodegraded polyvinyl chloride nanoplastics (PVC-NPs) inhibited pea seedlings’ growth.

Keywords： Nanoplasctics     Polyvinyl chloride     Toxicity mechanisms     Plant growth    

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Recent development on innovation design of reconfigurable mechanisms in China

Wuxiang ZHANG, Shengnan LU, Xilun DING

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 1,   Pages 15-20 doi: 10.1007/s11465-018-0517-7

Abstract: Reconfigurable mechanisms can deliberately reconfigure themselves by rearranging the connectivity ofMetamorphic and origami-derived mechanisms are two kinds of typical reconfigurable mechanisms, whichhave attracted increasing attention in the field of mechanisms since they were proposed.This paper presents an overview of recent developments in innovation design of reconfigurable mechanismsin China, including metamorphic and origami mechanisms and their typical applications.

Keywords： innovation design     reconfigurable mechanisms     metamorphic mechanisms     origami-derived mechanisms     development    

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Optimal design of a linkage–cam mechanism-based redundantly actuated parallel manipulator

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 3,   Pages 451-467 doi: 10.1007/s11465-021-0634-6

Abstract: A redundantly actuated parallel manipulator (RAPM) with mixed translational and rotational degrees ofAs an example, this paper presents a spatial RAPM involving linkages and cam mechanisms.

Keywords： redundant actuation     parallel manipulator     linkage–cam mechanism     Jacobian     optimal design    

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A rolling 3-UPU parallel mechanism

Zhihuai MIAO, Yan’an YAO, Xianwen KONG

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 4,   Pages 340-349 doi: 10.1007/s11465-013-0282-6

Abstract:

A novel rolling mechanism is proposed based on a 3-UPU parallel mechanism in this paper.

Keywords： parallel mechanism     rolling mechanism     screw theory    

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Title Author Date Type Operation

Design and analysis of partially decoupled translational parallel mechanisms with single-loop structures

Journal Article

Design and analysis of the gripper mechanism based on generalized parallel mechanisms with configurable

Journal Article

Gripping mechanisms in current wood harvesting machines

D. GOUBET, J. C. FAUROUX, G. GOGU

Journal Article

A redundantly actuated PRPRP radial mechanism in the segment erector of a shield machine for synchronization control

Wanghui BU, Zhenyu LIU, Jianrong TAN, Jin CHENG

Journal Article

Active Control of Ocean Vehicle Multidimension Vibration and Motion

Chen Xiuxiang,Ma Lüzhong,Wu Weiguang,Zhu Wei

Journal Article

Comparison of internal force antagonism between redundant cable-driven parallel robots and redundantrigid parallel robots

Journal Article

Elevated temperature creep model of parallel wire strands

Journal Article

FOOD SYSTEMS TRANSFORMATION: CONCEPTS, MECHANISMS AND PRACTICES

Journal Article

Structural optimization of typical rigid links in a parallel kinematic machine

Xinjun LIU, Zhidong LI, Xiang CHEN

Journal Article

Cusp points and assembly changing motions in the PRR-PR-PRR planar parallel manipulator

Journal Article

Variable identification and automatic tuning of the main module of a servo system of parallel mechanism

YANG Zhiyong, XU Meng, HUANG Tian, NI Yanbing

Journal Article

Toxicity mechanisms of photodegraded polyvinyl chloride nanoplastics on pea seedlings

Journal Article

Recent development on innovation design of reconfigurable mechanisms in China

Wuxiang ZHANG, Shengnan LU, Xilun DING

Journal Article

Optimal design of a linkage–cam mechanism-based redundantly actuated parallel manipulator

Journal Article

A rolling 3-UPU parallel mechanism

Zhihuai MIAO, Yan’an YAO, Xianwen KONG

Journal Article