Results 1 to 10 of about 1,140 (122)

Design and Experimental Research of 3-RRS Parallel Ankle Rehabilitation Robot [PDF]

open access: yesMicromachines, 2022
The ankle is a crucial joint that supports the human body weight. An ankle sprain will adversely affect the patient’s daily life, so it is of great significance to ensure its strength.
Yupeng Zou   +5 more
doaj   +2 more sources

Inverse Kinematics for Upper Limb Compound Movement Estimation in Exoskeleton-Assisted Rehabilitation. [PDF]

open access: yesBiomed Res Int, 2016
Robot-Assisted Rehabilitation (RAR) is relevant for treating patients affected by nervous system injuries (e.g., stroke and spinal cord injury) -- The accurate estimation of the joint angles of the patient limbs in RAR is critical to assess the patient ...
Cortés C   +7 more
europepmc   +11 more sources

Dynamic response analysis for multi-degrees-of-freedom parallel mechanisms with various types of three-dimensional clearance joints

open access: yesInternational Journal of Advanced Robotic Systems, 2021
For spatial multibody systems, the dynamic equations of multibody systems with compound clearance joints have a high level of nonlinearity. The coupling between different types of clearance joints may lead to abundant dynamic behavior.
Jia Yonghao, Chen Xiulong
doaj   +1 more source

Concept and architecture of a new apparatus for cylindrical form measurement with a nanometric level of accuracy [PDF]

open access: yes, 2012
In relation to the industrial need and to the progress of technology, Laboratoire National de M´etrologie et d’Essais (LNE) would like to improve the measurement of its primary pressure standards, spherical and flick standards.
DAMAK, Mohamed   +4 more
core   +8 more sources

Sliding joints in 3D beams: conserving algorithms using the master-slave approach [PDF]

open access: yes, 2006
This paper proposes two time-integration algorithms for motion of geometrically exact 3D beams under sliding contact conditions. The algorithms are derived using the socalled master–slave approach, in which constraint equations and the related time ...
Jelenic, Gordan, Muñoz Romero, José
core   +2 more sources

Using Singularities of Parallel Manipulators for Enhancing the Rigid-body Replacement Design Method of Compliant Mechanisms [PDF]

open access: yes, 2014
International audienceThe rigid-body replacement method is often used when designing a compliant mechanism. The stiffness of the compliant mechanism, one of its main properties, is then highly dependent on the initial choice of a rigid-body architecture.
Caro, Stéphane   +3 more
core   +3 more sources

A comprehensive survey of the analytical, numerical and experimental methodologies for dynamics of multibody mechanical systems with clearance or imperfect joints [PDF]

open access: yes, 2018
"Available online 19 December 2017"A comprehensive survey of the literature of the most relevant analytical, numerical, and experimental approaches for the kinematic and dynamic analyses of multibody mechanical systems with clearance joints is presented ...
Abdallah   +478 more
core   +1 more source

Dynamic behaviour of planar rigid multi-body systems including revolute joints with clearance [PDF]

open access: yes, 2007
This paper deals with a general methodology to assess the influence of the clearance size and the friction coefficient on the dynamic response of planar rigid multi-body systems including revolute joints with clearance.
Ambrósio, Jorge   +3 more
core   +1 more source

On a Jansen leg with multiple gait patterns for reconfigurable walking platforms [PDF]

open access: yes, 2015
Legged robots are able to move across irregular terrains and those based on 1-degree-of-freedom planar linkages can be energy efficient, but are often constrained by a limited range of gaits which can limit their locomotion capabilities considerably ...
Artobolevsky I   +14 more
core   +2 more sources

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