Results 31 to 40 of about 1,466 (183)

Kinematic analysis of a 3-DOF asymmetrical planar parallel robot mechanism

Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2018
In this study, kinematic analysis of a planarparallel robot mechanism with three degrees of freedom (DOF) was performed. Thedifference of the selected mechanism from the other planar mechanisms is thatit has an asymmetric leg structure.
Metin Toz
doaj   +1 more source

Efficient and Robust Standing Postures of Quadruped Robots

Advanced Robotics Research, EarlyView.
A calibrated static framework estimates load, optimizes torques, and adapts posture so quadruped robots stand efficiently and robustly under external payloads, achieving up to 50% lower torque demand. Inspired by the natural posture adjustments of animals under external loading, this article presents an optimization‐based framework for minimizing joint
Mohamad Kanaan, Hamza Jomaa, Jack Challita, Kawthar Zaidan, Riad Saab, Hussein Hussein   +5 more
wiley   +1 more source

FiN‐Kiri: Fabric‐Based Inflatable Kirigami Actuator for Multimodal Soft Robots

Advanced Robotics Research, EarlyView.
This study introduces a type of inflatable fabric‐based kirigami actuator capable of performing bending motion. The actuator is utilized as soft grippers, a crawling robot and a swimming robot. The crawling robot demonstrated extraordinary motion capabilities, such as moving forward, turning and navigating a narrow tunnel.
Yang Yu, Yupei Zhang, Yanqi Yin, Yehui Wu, Jinyao Zhang, Ruiyu Bai, Jiaqiang Yao, Kewei Su, Chenyi Yu, Zhicheng Tian, Naipeng Li, Zhuang Zhang, Bo Li   +12 more
wiley   +1 more source

Finite Element Modelling Method and Dynamic Characteristics of the Revolute Joints of a Simply Supported Bar During Dynamic Buckling

Shock and Vibration
The explicit dynamic finite element method (FEM) has been successfully employed for simulating the buckling response of beam or bar structures under axial impact.
Sai Liu, Weigui Zhang
doaj   +1 more source

Measuring Coulomb and Viscous Friction in Revolute Joint

NUST Journal of Engineering Sciences, 2008
In this research work, the emphasis is on the study of the effects of friction in the revolute joint for fine manipulation of robotic arm manipulators.
Touqeer Sohail, Afzaal M. Malik
doaj   +1 more source

A Multimodal Haptic Feedback Interface with Thin‐Film Compliant Mechanism

Advanced Science, EarlyView.
Multimodal haptic devices can trigger different mechanoreceptors, enabling richer haptic information. This study presents an electromagnetic multimodal haptic device capable of delivering indentation, stretch, and vibration stimuli. The device is enabled by a novel polymer thin‐film compliant mechanism that provides high translational compliance along ...
Jingjing Wan, Emanuele Nicotra, James Davies, Kefan Zhu, Quang Anh Nguyen, Sinuo Zhao, Chi Cong Nguyen, Bibhu Sharma, Adrienne Ji, Hermione Truong, Patrick Pruscino, Tan Huynh, Phuoc Thien Phan, Hoang‐Phuong Phan, Nigel Hamilton Lovell, Thanh Nho Do   +15 more
wiley   +1 more source

The Microbial Revolution in the World of Joint Replacement Surgery

JBJS Open Access
Background: The prevalence of revision surgery due to aseptic loosening and periprosthetic joint infection (PJI) following total hip and knee arthroplasty is growing. Strategies to prevent the need for revision surgery and its associated health-care costs and patient morbidity are needed.
Arjuna Srikrishnaraj, Brent A. Lanting, Jeremy P. Burton, Matthew G. Teeter   +3 more
openaire   +3 more sources

Fuzzy adaptive state-feedback control for a revolute-prismatic-revolute robot manipulator

Cogent Engineering, 2019
In this work, a fuzzy adaptive state-feedback control is designed for the stabilization of a three-degree of freedom revolute-prismatic-revolute (RPR) robot manipulator.
N. Nejadkourki, M. J. Mahmoodabadi
doaj   +1 more source

Model-Predictive-Control-Based Time-Optimal Trajectory Planning of the Distributed Actuation Mechanism Augmented by the Maximum Performance Evaluation

Applied Sciences, 2021
Trajectory planning for a redundant manipulator is a classic problem. However, because it is difficult to precisely evaluate its maximum performance, an optimization method has been typically used.
Jong Ho Kim, Kyunghwan Choi, In Gwun Jang   +2 more
doaj   +1 more source

A Rigid–Foldable Kirigami‐Inspired Metamorphic Mechanism With Programmable Motion Modes and Self‐Locking

Advanced Science, EarlyView.
Geometric constraint reconfiguration enables a rigid–foldable kirigami‐inspired mechanism to switch between twisting, directional translation, and self‐locking states. By encoding multifunctionality directly into its architecture, the mechanism achieves multimodal motion and passive locking without reassembly, providing a compact platform for adaptive ...
Jianlin Wang, Zhongmin Song, Ketao Zhang
wiley   +1 more source