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Magnetic resonance imaging of the joints: a revolution for the practicing rheumatologist
Reumatismo, 2011 In the last 15 years, new imaging techniques have changed the life of practicing rheumatologists in terms of both diagnostic approach and knowledge of disease mechanisms. Clinical symptoms, disease signs and the results of physical examination have been more closely related to their anatomical basis.
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3D Revolute Joint with Clearance in Multibody Systems [PDF]
, 2017 The aim of this paper is to understand the influence of radial and axial clearance in the revolute joints on the overall performance of a circuit breaker. A circuit breaker mechanism is made of seven links, seven revolute joints with clearance in both radial and axial direction, four unilateral contacts with friction, and it has forty-two degrees of ...
Akhadkar, Narendra +2 more
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, 2008 This paper demonstrates that any general 3-DOF three-legged planar parallel robot with extensible legs can change assembly modes without passing through parallel singularities (configurations where the mobile platform loses its stiffness).
Bonev, Ilian +3 more
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Inverse Kinematics of a Serial Manipulator with a Free Joint for Aerial Manipulation
Applied SciencesIn Aerial Manipulation, the motion of the robotic arm can cause unwanted movements of the flying base affecting the trajectory tracking capability. A possible solution to reduce these disturbances is to use a free revolute joint between the flying base ...
Alberto Pasetto +3 more
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Effects of realistic sheep elbow kinematics in inverse dynamic simulation.
PLoS ONE, 2019 Looking for new opportunities in mechanical design, we are interested in studying the kinematic behaviour of biological joints. The real kinematic behaviour of the elbow of quadruped animals (which is submitted to high mechanical stresses in comparison ...
Baptiste Poncery +3 more
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Analysis of Kinematics of Mechanisms Containing Revolute Joints
Kinematics of rigid bodies can be analyzed in many different ways. The advantage of using Euler parameters is that the resulting equations are polynomials and hence computational algebra, in particular Gröbner bases, can be used to study them. The disadvantage of the Gröbner basis methods is that the computational complexity grows quite fast in the ...
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The modelling of two DOF joints controlled by elastic inner ties
ITM Web of Conferences, 2017 This paper considers the mathematical model of two types of joints that can be used to connect the arms of two robots. The first of them is a simple revolute joint with one degree of freedom and the second is a universal joint with two degrees of freedom.
Ożóg Dominik
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Contact Model of Revolute Joint with Clearance Based on Fractal Theory
Chinese Journal of Mechanical Engineering, 2018 The contact stiffness of a mechanical bonding surface is an important parameter in determining the normal and radial contact force. To improve the calculation accuracy of the contact force model, the surface roughness of the bonding surface and the ...
Shi-Hua Li +4 more
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Computer simulation and design of a three degree-of-freedom shoulder module [PDF]
, 1989 An in-depth kinematic analysis of a three degree of freedom fully-parallel robotic shoulder module is presented. The major goal of the analysis is to determine appropriate link dimensions which will provide a maximized workspace along with desirable ...
Marco, David +2 more
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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 +2 more
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