Results 21 to 30 of about 235 (216)

Multijoint passive elastic spine exoskeleton for stoop lifting assistance

International Journal of Advanced Robotic Systems, 2021
In the task of carrying heavy objects, it is easy to cause back injuries and other musculoskeletal diseases. Although wearable robots are designed to reduce this danger, most existing exoskeletons use high-stiffness mechanisms, which are beneficial to ...
Jiyuan Song, Aibin Zhu, Yao Tu, Jiajun Zou   +3 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Direct Kinematics Solution of 3-RCC Parallel Robot using a Semi-Analytical Homotopy Method [PDF]

International Journal of Advanced Design and Manufacturing Technology, 2019
Parallel robots are closed-loop mechanisms presenting very good performances in terms of accuracy, rigidity, and the ability to manipulate large loads. Inverse kinematics problem for most parallel robots is straightforward, while the direct kinematics is
Seyyed Mojtaba Varedi-Koulaei, Masoumeh Rahimi   +1 more
doaj  

Additive Manufacturing of Alumina‐Reinforced Elastomers

Advanced Engineering Materials, EarlyView.
Vat‐photopolymerized elastomers reinforced with platelet‐shaped alumina exhibited preferential orientation, reduced porosity, and significantly enhanced mechanical performance. A 3 wt% platelet loading increased tensile strength from 12.4 to 45.7 MPa, highlighting the critical role of filler morphology in elastomeric VPP composites.
Majid Barzegar Keyvani, Zongwen Fu, Robert Göstl, Hamed Shokri, Carmine Putignano, Gianluca Percoco, Bilal Gökce   +6 more
wiley   +1 more source

MineRobot: An Actuator-Centered Kinematic Modeling and Solving Framework for Underground Mining Robots

Actuators
Underground mining robots are increasingly modeled for planning, operator training, and digital-twin workflows, where reliable actuator-level kinematics is needed to reduce hazardous in situ trials.
Shengzhe Hou, Xinming Lu, Tianyu Zhang, Changqing Yan, Xingli Zhang   +4 more
doaj   +1 more source

An Efficient Stochastic Constrained Path Planner for Redundant Manipulators

Applied Sciences, 2021
This brief proposes a novel stochastic method that exploits the particular kinematics of mechanisms with redundant actuation and a well-known manipulability measure to track the desired end-effector task-space motion in an efficient manner. Whilst closed-
Arturo Gil Aparicio, Jaime Valls Miro
doaj   +1 more source

Stretching the Printability Metric in Direct‐Ink Writing with Highly Extensible Yield‐Stress Fluids

Advanced Functional Materials, EarlyView.
This study introduces “drawability” as a new metric for assessing printability in direct‐ink writing, focusing on gap‐spanning performance and speed robustness. By designing yield‐stress fluids with high extensibility, we demonstrate that extensional strain‐to‐break significantly enhances printability.
Chaimongkol Saengow, Samya Sen, Joaquin Yus, Eliza E. Lovrich, Amanda G. Hoika, Kelly M. Chang, Arielle A. Pfeil, Nellie Haug, Amy J. Wagoner Johnson, Randy H. Ewoldt   +9 more
wiley   +1 more source

How Do Humans Recognize the Motion Arousal of Non-Humanoid Robots?

Applied Sciences
As non-humanoid robots develop and become more involved in human life, emotional communication between humans and robots will become more common. Non-verbal communication, especially through body movements, plays a significant role in human–robot ...
Qisi Xie, Zihao Chen, Dingbang Luh
doaj   +1 more source

Aerodynamic performance of a bird-inspired morphing tail

Journal of Biomechanical Science and Engineering, 2022
Flying animals such as insects, bats, and birds have acquired the ability to achieve diverse and robust flight patterns in various natural environments.
Yuta MURAYAMA, Toshiyuki NAKATA, Hao LIU
doaj   +1 more source

Efficient kinematic solution to a multi-robot with serial and parallel mechanisms [PDF]

2010 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2010
This paper presents an efficient kinematical solution to a multi-robot system with serial and parallel mechanisms. JL-I is a reconfigurable robot featuring active spherical joints formed by serial and parallel mechanisms endowing the robotic system with the ability of changing shapes in three dimensions. The active joint here can combine the advantages
Houxiang Zhang, Gionata Salvietti, Wei Wang 0034, Guoyuan Li, Junzhi Yu 0001, Jianwei Zhang 0001   +5 more
openaire   +1 more source