Results 11 to 20 of about 213,216 (285)

A Closed-Form Solution for the Inverse Kinematics of the 2n-DOF Hyper-Redundant Manipulator Based on General Spherical Joint

open access: yesApplied Sciences, 2021
This paper presents a closed-form inverse kinematics solution for the 2n-degree of freedom (DOF) hyper-redundant serial manipulator with n identical universal joints (UJs).
Ya’nan Lou   +4 more
doaj   +1 more source

Dynamics and Wear Prediction of Mechanisms Considering Multiple Clearances and Coatings

open access: yesLubricants, 2023
The increase in joint clearance and system vibration caused by joint wear are important factors that may lead to the failure of the mechanism and a decrease in the motion accuracy of the actuator.
Qian Jing, Hongzhao Liu
doaj   +1 more source

Vibro-Acoustic Analysis of a Spherical Joint Using FEM

open access: yesThe Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, 2022
Vibro-Acoustic analysis gives the possibility of obtaining the level of sound pressure depending on the frequency, as well as the evaluation of the acoustic pressure in a point of interest.
Doina BOAZU
doaj   +1 more source

Accuracy Analysis and Experimental Study of a Six-Dimensional Force Sensor with Circular Flexible Spherical Joints

open access: yesSensors, 2023
This paper proposed a circular flexible spherical joint to reduce the processing difficulty and manufacturing cost, and design a six-dimensional force sensor based on it.
Zhijun Wang, Xiaotao Zhang, Mengxiang Li
doaj   +1 more source

Modelling Spherical Joints in Multibody Systems

open access: yes, 2021
Spherical joints are commonly utilized in many real-world scenarios. From the more simplistic to the more complex perspectives, spherical joints might be modelled considering different cases. Thus, the aim of this study is to analyze and compare the influence of different spherical joint modelling approaches, namely the ideal, dry, lubricated, and ...
Silva, Mariana Isabel Santos Rodrigues   +3 more
openaire   +2 more sources

THE GEOMETRY OF THE SPATIAL FOUR-BAR MECHANISM AND OF ITS PARTICULAR FORMS [PDF]

open access: yesFiabilitate şi Durabilitate, 2015
Starting from the rssr spatial four-bar mechanism, this paper analyses the most significant particular cases for which the specific transfer functions are written in comparison to the respective function deduced in the general case.
Păun ANTONESCU   +2 more
doaj   +2 more sources

Dynamic analysis of a parallel robot with spherical joints with consideration for joint clearance

open access: yesNihon Kikai Gakkai ronbunshu, 2022
This paper proposes a dynamic analysis method for evaluating the vibrational behavior of a parallel robot having spherical joints with clearance. By using variables that represent the relative displacement between the elements of clearance joints as ...
Masumi OHNO, Yukio TAKEDA
doaj   +1 more source

Uncertainty Analysis of Spherical Joint Three-Dimensional Rotation Angle Measurement

open access: yesApplied Sciences, 2023
A precision spherical joint is a type of spherical motion pair that can realize three degrees of rotation freedom. In this paper, a specific method is used to assess the uncertainty of our measurement system.
Jin Zhang   +3 more
doaj   +1 more source

Spherical Tuples of Hilbert Space Operators [PDF]

open access: yes, 2014
We introduce and study a class of operator tuples in complex Hilbert spaces, which we call spherical tuples. In particular, we characterize spherical multi-shifts, and more generally, multiplication tuples on RKHS.
Chavan, S., Yakubovich, D.
core   +3 more sources

Influence of Vibrations on Spherical Joint Endurance in Service

open access: yesPromet (Zagreb), 2012
The paper deals with the causes and consequences of vibrationsoccurring dwing service on spherical joints in vehicles. Itexplains the main causes of vibrations and their effects on themost fragile joint elements, and shows the damages on the jointswface.
Zdravko Bukljaš   +2 more
doaj   +1 more source

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