Results 11 to 20 of about 1,143 (120)

Curtis\u27s botanical magazine. [PDF]

v.58=ser.2:v.5 (1831) [no.3039 ...
Bentham-Moxon Trust., Bentham-Moxon Trust., Curtis, William, 1746-1799, Hooker, Joseph Dalton, 1817-1911, Hooker, William Jackson, Sir, 1785-1865, Prain, D. 1857-, Royal Botanic Gardens, Kew., Royal Horticultural Society (Great Britain), Stanley Smith Horticultural Trust, Stanley Smith Horticultural Trust., Stapf, O. (Otto) 1857-1933   +10 more
core   +52 more sources

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

, 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, DAVID, Jean-Marie, GIBARU, Olivier, NOUIRA, Hichem, VISSIERE, Alain   +4 more
core   +8 more sources

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

Biomed 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, de Los Reyes-Guzmán A, Scorza D, Bertelsen Á, Carrasco E, Gil-Agudo Á, Ruiz-Salguero O, Flórez J.   +7 more
europepmc   +11 more sources

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

, 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

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

, 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, Claro, José Carlos Pimenta, Flores, Paulo, Lankarani, H. M.   +3 more
core   +1 more source

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

, 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, Gangloff, Jacques, Renaud, Pierre, Rubbert, Lennart   +3 more
core   +3 more sources

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

, 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, Burmester L, Jansen T, Johnson J, Kim S-W, Komoda K, Kuo C, Paul C, Pucheta M, Rojas N, Rojas N, Song S, Tsai L, Tsujita K, Zhang L   +14 more
core   +2 more sources

A biomimetic robotic platform to study flight specializations of bats [PDF]

, 2017
Bats have long captured the imaginations of scientists and engineers with their unrivaled agility and maneuvering characteristics, achieved by functionally versatile dynamic wing conformations as well as more than 40 active and passive joints on the ...
Chung, Soon-Jo, Hutchinson, Seth, Ramezani, Alireza   +2 more
core   +1 more source

Singularity Analysis of the H4 Robot using Grassmann-Cayley Algebra [PDF]

, 2011
International audienceThis paper extends a recently proposed singularity analysis method to lower-mobility parallel manipulators having an articulated nacelle.
Amine, Semaan, Caro, Stéphane, Kanaan, Daniel, Wenger, Philippe   +3 more
core   +3 more sources

Dimensional synthesis of a spherical parallel manipulator based on the evaluation of global performance indexes [PDF]

, 2012
In this work, the dimensional synthesis of a spherical Parallel Manipulator (PM) with a -1S kinematic chain is presented. The goal of the synthesis is to find a set of parameters that defines the PM with the best performance in terms of workspace ...
Angeles, Badescu, Bonev, Cecilia Garcia, Gogu, Gosselin, Gosselin, Gosselin, Hector A. Moreno, Herve, Huang, Jun Liu, Kong, Lisandro J. Puglisi, Lou, Merlet, Merlet, Oen, Pedro F. Cárdenas, Rafael Aracil, Roque J. Saltaren, Stocco, Tsai, Zoppi   +23 more
core   +2 more sources