Results 31 to 40 of about 55,756 (290)

Pose, posture, formation and contortion in kinematic systems [PDF]

open access: yes, 2002
The concepts of pose, posture, formation and contortion are defined for serial, parallel and hybrid kinematic systems. Workspace and jointspace structure is examined in terms of these concepts.
CM Gosselin   +9 more
core   +1 more source

Safe Robotic Grasping: Minimum Impact-Force Grasp Selection

open access: yes, 2017
This paper addresses the problem of selecting from a choice of possible grasps, so that impact forces will be minimised if a collision occurs while the robot is moving the grasped object along a post-grasp trajectory.
E., Amir M. Ghalamzan   +2 more
core   +1 more source

Control of Mechatronic System Based on Multilink Robot-Manipulators

open access: yesНаука и техника, 2019
The task of controlling multi-link robots with manipulators for implementation of high-tech processes in industry has been considered in the paper. The paper presents sequential steps of using computer technology in construction of robotic-manipulators ...
N. N. Hurski   +3 more
doaj   +1 more source

Robot Excitation Trajectories for Dynamic Parameter Estimation using Optimized B-Splines [PDF]

open access: yes, 2012
In this paper we adressed the problem of finding exciting trajectories for the identification of manipulator link inertia parameters. This can be formulated as a constraint nonlinear optimization problem.
Hirzinger, Gerd   +2 more
core   +1 more source

Tool actuation and force feedback on robot-assisted microsurgery system [PDF]

open access: yes, 2002
An input control device with force sensors is configured to sense hand movements of a surgeon performing a robot-assisted microsurgery. The sensed hand movements actuate a mechanically decoupled robot manipulator. A microsurgical manipulator, attached to
Boswell, Curtis D.   +3 more
core   +1 more source

On the optimal design of parallel robots taking into account their deformations and natural frequencies [PDF]

open access: yes, 2009
This paper discusses the utility of using simple stiffness and vibrations models, based on the Jacobian matrix of a manipulator and only the rigidity of the actuators, whenever its geometry is optimised. In many works, these simplified models are used to
Briot, Sébastien   +2 more
core   +4 more sources

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

Optimization of sliding mode control with PID surface for robot manipulator by Evolutionary Algorithms

open access: yesOpen Computer Science, 2020
In this paper, a sliding mode controller (SMC) with PID surface is designed for the trajectory tracking control of a robot manipulator using different optimization algorithms such as, Antlion Optimization Algorithm (ALO) Sine Cosine Algorithm (SCA) Grey ...
Loucif Fatiha, Kechida Sihem
doaj   +1 more source

Interest of the dual hybrid control scheme for teleoperation with time delays [PDF]

open access: yes, 1997
A new scheme of teleoperation called "dual hybrid control" is described. It is shown that telepresence is increased compared to traditional force feedback schemes.
Briere, Yves   +2 more
core   +1 more source

The ubiquitin ligase RNF115 is required for the clearance of damaged lysosomes

open access: yesFEBS Letters, EarlyView.
Upon lysosomal rupture, an E3 ubiquitin ligase RNF115 translocates from the cytosol to the damaged lysosomal membrane. Moreover, RNF115 depletion impairs the clearance of damaged lysosomes, identifying it as a key regulator of lysosomal quality control.
Sae Nakanaga   +3 more
wiley   +1 more source

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