Results 31 to 40 of about 12,512 (217)

Dynamic Modeling and Performance Analysis of a Hip Rehabilitation Robot

open access: yesBiomimetics, 2023
The dynamic performance of a 2-DOF hip joint rehabilitation robot configuration for patients with hip joint dyskinesia was analyzed. There were eight revolute pairs on one side of the hip joint rehabilitation robot configuration.
Zengyu Jia   +3 more
doaj   +1 more source

Synthesis of clearance for a kinematic pair to prevent an overconstrained linkage from becoming stuck [PDF]

open access: yesMechanical Sciences, 2023
Mechanisms are prone to stuttering or even jamming due to the deformation of components, especially for overconstrained linkages for which geometric conditions must be strictly satisfied.
J. Qi, Y. Gao, F. Yang, F. Yang
doaj   +1 more source

Robot kinematic structure classification from time series of visual data

open access: yes, 2019
In this paper we present a novel algorithm to solve the robot kinematic structure identification problem. Given a time series of data, typically obtained processing a set of visual observations, the proposed approach identifies the ordered sequence of ...
Carli, Ruggero   +4 more
core   +1 more source

Wear prediction for dry revolute joint with clearance in multibody system by integrating dynamics model and wear model

open access: yesLatin American Journal of Solids and Structures
This work presents an investigation on wear prediction of multibody system including dry revolute clearance joint using a computational methodology. A procedure to analyze multibody system in which wear is present at revolute joints is presented.
Z.F. Bai, H.B. Zhang, Y. Sun
doaj   +1 more source

Study on Wear Characteristics of Revolute Clearance Joints in Mechanical Systems

open access: yesMicromachines, 2022
The existence of clearance causes contact-impact forces in joints, which lead to surface wear and incessant material loss of the joint surface during the motion of mechanisms.
Zhengfeng Bai   +2 more
doaj   +1 more source

Identifying Physical Interactions in Contact‐Based Robot Manipulation for Learning from Demonstration

open access: yesAdvanced Robotics Research, EarlyView.
Robots can learn manipulation tasks from human demonstrations. This work proposes a versatile method to identify the physical interactions that occur in a demonstration, such as sequences of different contacts and interactions with mechanical constraints.
Alex Harm Gert‐Jan Overbeek   +3 more
wiley   +1 more source

Modeling Stiffness and Damping in Rotational Degrees of Freedom Using Multibond Graphs [PDF]

open access: yes, 2013
A contribution is proposed for the modeling of mechanical systems using multibond graphs. When modeling a physical system, it may be needed to catch the dynamic behavior contribution of the joints between bodies of the system and therefore to ...
BARRE, Pierre-Jean   +3 more
core   +3 more sources

Swimming of onboard-powered autonomous robots in viscous fluid filled channels [PDF]

open access: yes, 2011
Microrobots can make a great impact in medical applications such as minimally-invasive surgery, screening and diagnosis of diseases, targeted therapy and drug delivery.
Erman, Aydek Gokce   +3 more
core   +2 more sources

Universal Gripper for Industrial Manipulation With Enhanced Rigid Mechanics and Self‐Adaptable Fingers

open access: yesAdvanced Robotics Research, EarlyView.
An enhanced universal gripper combining rigid mechanics with self‐adaptable fingers is presented for industrial automation. The novel six‐bar linkage with integrated compliant pad eliminates mechanical interference while enabling passive shape adaptation.
Muhammad Usman Khalid   +7 more
wiley   +1 more source

On the optimal design of parallel robots taking into account their deformations and natural frequencies [PDF]

open access: yes, 2009
This paper discusses the utility of using simple stiffness and vibrations models, based on the Jacobian matrix of a manipulator and only the rigidity of the actuators, whenever its geometry is optimised. In many works, these simplified models are used to
Briot, Sébastien   +2 more
core   +4 more sources

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