Results 11 to 20 of about 5,804 (269)

A novel approach for 2-degrees of freedom redundant parallel manipulator dynamics

open access: yesAdvances in Mechanical Engineering, 2017
A novel Udwadia–Kalaba approach for redundant parallel manipulator dynamics is presented in this article. This methodology is explicit and simple which is suitable for systems with holonomic or non-holonomic constraints.
Rongrong Yu   +3 more
doaj   +1 more source

Stiffness Model of a 3-DOF Parallel Manipulator with Two Additional Legs

open access: yesInternational Journal of Advanced Robotic Systems, 2014
This paper investigates the stiffness modelling of a 3-DOF parallel manipulator with two additional legs. The stiffness model in six directions of the 3-DOF parallel manipulator with two additional legs is derived by performing condensation of DOFs for ...
Guang Yu, Jun Wu, Liping Wang
doaj   +1 more source

Forward Kinematics and Workspace Determination of a Novel Redundantly Actuated Parallel Manipulator

open access: yesInternational Journal of Aerospace Engineering, 2019
This paper presents a novel redundantly actuated 2RPU-2SPR parallel manipulator that can be employed to form a five-axis hybrid kinematic machine tool for large heterogeneous complex structural component machining in aerospace field.
Haiqiang Zhang   +4 more
doaj   +1 more source

Performance analysis for a 2 (3HSS+S) parallel manipulator with double moving platforms

open access: yesInternational Journal of Advanced Robotic Systems, 2016
The working efficiency of a parallel manipulator with double moving platforms is better than a parallel manipulator with a single moving platform. In this study, a 2 (3HSS+S) parallel manipulator is presented, and the topology model of the parallel ...
Gang Cheng, Zunzhong Zhao, Xianlei Shan
doaj   +1 more source

Dynamic Coupling Analysis of a Spatial 6-DOF Electro-Hydraulic Parallel Manipulator Using a Modal Decoupling Method

open access: yesInternational Journal of Advanced Robotic Systems, 2013
The workspace of a spatial 6-DOF electro-hydraulic parallel manipulator is strongly coupled, due to its multi-closed-loop kinematic structure and the coupling complicates motion planning and control of the parallel manipulator.
Chifu Yang, Junwei Han
doaj   +1 more source

Research on Longitudinal Vibration Characteristic of the Six-Cable-Driven Parallel Manipulator in FAST

open access: yesAdvances in Mechanical Engineering, 2013
The first adjustable feed support system in FAST is a six-cable-driven parallel manipulator. Due to flexibility of the cables, the cable-driven parallel manipulator bears a concern of possible vibration caused by wind disturbance or internal force from ...
Zhihua Liu   +4 more
doaj   +1 more source

Real-time UVMS torque distribution algorithm based on weighting matrix.

open access: yesPLoS ONE, 2021
This study presents a real-time algorithm for even distributing the torque burden on the parallel manipulator with an autonomous underwater vehicle (AUV) through the cooperation of the AUV and manipulator.
Yecheol Moon   +4 more
doaj   +1 more source

Dynamic Analysis and Trajectory Tracking Control for a Parallel Manipulator with Joint Friction

open access: yesApplied Sciences, 2022
To overcome the bearing capacity deficiencies of traditional serial hip joint simulators, complex trajectory simulation, among others, as well as a parallel manipulator with two pairs of artificial hip joints and two moving platforms are proposed.
Shibiao Chen, Gang Cheng, Yusong Pang
doaj   +1 more source

A Fuzzy PID Approach for the Vibration Control of the FSPM

open access: yesInternational Journal of Advanced Robotic Systems, 2013
This paper focuses on the vibration control issue of a Flexibly Supported Parallel Manipulator (FSPM), which consists of a flexible support and a rigid parallel manipulator. The distinct characteristic of an FSPM is the dynamic coupling between the rigid
Zhu-Feng Shao   +3 more
doaj   +1 more source

A Spatial Six-Dof Parallel Manipulator with Redundant Actuators for Gross and Fine Motions

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2010
We presented a spatial parallel manipulator with redundant actuators for gross and fine motions to achieve fine positioning together with gross motion in three dimensional space.
Yukio TAKEDA, Kazuki ICHIKAWA, Wei GUO
doaj   +1 more source

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