Results 71 to 80 of about 2,061,051 (213)
Closed linkages with six revolute joints
, 2016 In this dissertation, we explore spatial overconstrained closed linkages with six revolute joints and a single-degree-of-freedom (6R linkages). The first 6R linkage was invented by Pierre Frédéric Sarrus in 1853. In the literature, a lot of 6R linkages were found by numerous methods. New 6R linkages are still being found by new methods, too.
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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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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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Kinematics and dynamics analysis of a novel 2PC-CPR parallel mechanism
International Journal of Advanced Robotic Systems, 2016 A novel parallel mechanism of two translations and one rotation freedom degrees two-prismatic joint-cylindrical joint-one-cylindrical joint-prismatic joint-revolute joint (2PC-CPR) is proposed. The mechanism can be applied to write Chinese characters and
Sheng Lin +4 more
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A decentralized approach for the aerial manipulator robust trajectory tracking.
PLoS ONEThis paper introduces a new decentralized control strategy for an unmanned aerial manipulator (UAM) constrained to the vertical plane. The control strategy comprises two loops: the first compensates for the aerial vehicle's impact on the manipulator; and
Yarai Elizabeth Tlatelpa-Osorio +2 more
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Extended and Unscented Kalman Filtering Applied to a Flexible-Joint Robot with Jerk Estimation
Discrete Dynamics in Nature and Society, 2010 Robust nonlinear control of flexible-joint robots requires that the link position, velocity, acceleration, and jerk be available. In this paper, we derive the dynamic model of a nonlinear flexible-joint robot based on the governing Euler-Lagrange ...
Mohammad Ali Badamchizadeh +2 more
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Static analysis and design of revolute joint and antiparallelogram joint: a technical report
, 2020 This technical report details the derivation of the static models of two antagonistically actuated joints: revolute (R) joint and antiparallelogram (X) joint. The conditions for these joints to possess the specified wrench-feasible workspace with the prescribed stiffness are derived.
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