Results 41 to 50 of about 189,389 (351)

Theory Analysis and Experiment Research of the Leg Mechanism for the Human-Carrying Walking Chair Robot

Journal of Robotics, 2014
For the high carrying capacity of the human-carrying walking chair robot, in this paper, 2-UPS+UP parallel mechanism is selected as the leg mechanism; then kinematics, workspace, control, and experiment of the leg mechanism are researched in detail ...
Lingfeng Sang, Hongbo Wang, Shuaishuai Wang, Na Chen, Yuehua Wen   +4 more
doaj   +1 more source

Parallel surgical robots

智能科学与技术学报, 2023
Medical robots improve medical efficiency and reduce patients’ suffering that owns social significance and scientific research value.Focusing on the difficulties of medical robots, we propose the concept of parallel medical robotics based on the ACP (artificial societies, computational experiments, parallel execution)-based parallel system method ...
Tianxiang BAI, Shuangyi WANG, Yating LIU, Hanzhong LI, Yi WEN   +4 more
openaire   +1 more source

Kinematics, workspace and singularity analysis of a multi-mode parallel robot

, 2017
A family of reconfigurable parallel robots can change motion modes by passing through constraint singularities by locking and releasing some passive joints of the robot.
Chablat, Damien, Kong, Xianwen, Zhang, Chengwei   +2 more
core   +2 more sources

Cable Robot Performance Evaluation by Wrench Exertion Capability [PDF]

, 2018
Although cable driven robots are a type of parallel manipulators, the evaluation of their performances cannot be carried out using the performance indices already developed for parallel robots with rigid links.
Boschetti, Giovanni, Trevisani, Alberto
core   +2 more sources

Design and motion control of a 6-UPS fully parallel robot for long bone fracture reduction : a thesis presented in partial fulfillment of the requirements for the degree of Master of Engineering in Mechatronics at Massey University [PDF]

, 2007
The incidences of long bone fractures in New Zealand are approximately 1 in 10,000. Long bones such as tibia and femur have complicated anatomic structures, making the realignment of these long bone fractures reliant on the skill of the surgeon.
Wu, Yimin
core  

Estimation model for kinematic calibration of manipulators with a parallel structure [PDF]

, 1994
This article provides an estimation model for calibrating the kinematics of manipulators with a parallel geometrical structure. Parameter estimation for serial link manipulators is well developed, but fail for most structures with parallel actuators ...
Kugiumtzis, Dimitris, Lillekjendlie, Bjørn   +1 more
core   +1 more source

Cell wall target fragment discovery using a low‐cost, minimal fragment library

FEBS Letters, EarlyView.
LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan, Mathew Stanley, Olawale Raimi, Andrew T. Ferenbach, Helge C Dorfmueller, Daan M. F. van Aalten   +5 more
wiley   +1 more source

Parallel Robots in Construction [PDF]

Proceedings of the International Symposium on Automation and Robotics in Construction (IAARC), 2005
Parallel robots have been in existence since the first half of the 20 century. Applications of parallel robots have ranged from tire testing machines to robots for performing surgery. The high load-to-weight ratio and high stiffness of parallel mechanisms sets them apart from more common serial robots.
Kamel S. Saidi, Alan M. Lytle
openaire   +1 more source

Aggressive prostate cancer is associated with pericyte dysfunction

Molecular Oncology, EarlyView.
Tumor‐produced TGF‐β drives pericyte dysfunction in prostate cancer. This dysfunction is characterized by downregulation of some canonical pericyte markers (i.e., DES, CSPG4, and ACTA2) while maintaining the expression of others (i.e., PDGFRB, NOTCH3, and RGS5).
Anabel Martinez‐Romero, Ane Martinez‐Larrinaga, Joaquim Grego‐Bessa, Saioa Garcia‐Longarte, Hielke van Splunder, Ianire Astobiza, Amaia Ercilla, Laura Bozal‐Basterra, Isabel Mendizabal, Pilar Villacampa, Arkaitz Carracedo, Mariona Graupera   +11 more
wiley   +1 more source

Evaluation on Configuration Stiffness of Overconstrained 2R1T Parallel Mechanisms

Chinese Journal of Mechanical Engineering
Currently, two rotations and one translation (2R1T) three-degree-of-freedom (DOF) parallel mechanisms (PMs) are widely applied in five-DOF hybrid machining robots. However, there is a lack of an effective method to evaluate the configuration stiffness of
Xuejian Ma, Zhenghe Xu, Yundou Xu, Yu Wang, Jiantao Yao, Yongsheng Zhao   +5 more
doaj   +1 more source