Results 21 to 30 of about 764,086 (315)

A novel multi-link equivalent connection hinge for planar deployable antenna: configuration design, kinematic analysis, and performance validation

Results in Engineering
With the increasing diversification of space missions, large-aperture planar antennas are facing increasingly stringent requirements in terms of surface coplanarity, protrusion-free deployment, and modular scalability.
Bo Chen, Xinlu Wei, Shichao Sun, Zezheng Xing, Yundou Xu, Qifeng Cui, Yongsheng Zhao   +6 more
doaj   +1 more source

Design, Assembly, and Simulation of Flexure-Based Modular Micro-Positioning Stages

Machines, 2022
With flexure-based micro-positioning stages (MPSs) being in high demand for high-precision applications, the performance and cost of flexure-based MPSs are two issues that urgently need to be addressed.
Shufan Liao, Bingxiao Ding, Yangmin Li
doaj   +1 more source

A modular-type robotic arm design having effective torque-speed performance as configuration of coaxial-torque synthesis modules

Engineering Science and Technology, an International Journal
As the applications of robotic arms become increasingly diverse, achieving a high payload-to-weight ratio and superior speed performance has become a critical design consideration.
Jaeyong Lee, Hyomin Kim, Seyoung Cheon, Taeung Kim, Woosung Yang   +4 more
doaj   +1 more source

Study on the Kinematic Performances and Optimization for Three Types of Parallel Manipulators

Machines, 2016
The modelling, optimization issues and stiffness for several types of three degrees-of-freedom parallel robotic manipulators, i.e., 3-DOF pure translational, 3-DOF pure rotational and 3-DOF mixed motion types, are studied in this paper. First of all, the
Dan Zhang, Bin Wei
doaj   +1 more source

Inverse and Forward Kinematic Analysis of a 6-DOF Parallel Manipulator Utilizing a Circular Guide

Robotics, 2021
The proposed study focuses on the inverse and forward kinematic analysis of a novel 6-DOF parallel manipulator with a circular guide. In comparison with the known schemes of such manipulators, the structure of the proposed one excludes the collision of ...
Alexey Fomin, Anton Antonov, Victor Glazunov, Yuri Rodionov   +3 more
doaj   +1 more source

Research of Design and Kinematic Characteristic of a 3-UPS/RPP Parallel Mechanism

Jixie chuandong, 2020
A new 3-DOF parallel mechanism 3-UPS/RPP is designed， which can realize two shifts and one rotation. Based on the traditional 3-UPS structure， a constrained branched chain of RPP structure is added to the structure.
Xuqi Wu-Fan, Qiang Xu, Sheng Liu, Mingming Gu   +3 more
doaj  

An Inexpensive Method for Kinematic Calibration of a Parallel Robot by Using One Hand-Held Camera as Main Sensor

Sensors, 2013
This paper presents a novel method for the calibration of a parallel robot, which allows a more accurate configuration instead of a configuration based on nominal parameters. It is used, as the main sensor with one camera installed in the robot hand that
Ricardo Carelli, Eduardo Castillo, Jesús Torrijos, José María Sebastián, Alberto Traslosheros   +4 more
doaj   +1 more source

Geometric Design and Prototyping of a (2-RRU)-URR Parallel Mechanism for Thumb Rehabilitation Therapy

Machines, 2021
In this paper, the geometrical design of a (2-RRU)-URR (where R and U stand for the revolute and universal joints, respectively) parallel mechanism was demonstrated for thumb rehabilitation therapy.
Woo-hyeok Choi, Yukio Takeda
doaj   +1 more source

Design and Workspace Analysis of Cable-rod Hybrid Drive Parallel Mechanism

Jixie chuandong, 2020
A new type of cable-rod hybrid drive parallel mechanism is proposed，and the overall device model is built in SolidWorks. The inverse kinematics model of the mechanism is derived by using the space vector analysis method.
Gao Zheng, Zhai Jingshuai, Zhang Jiahan, Li Yajie   +3 more
doaj  

Open Loop Position Control of Soft Hydraulic Actuators for Minimally Invasive Surgery

Applied Sciences, 2021
Minimally invasive surgery (MIS) presents many constraints on the design of robotic devices that can assist medical staff with a procedure. The limitations of conventional, rigid robotic devices have sparked interest in soft robotic devices for medical ...
Mark Runciman, James Avery, Ara Darzi, George Mylonas   +3 more
doaj   +1 more source