Results 61 to 70 of about 3,784,270 (306)
Revised Force Control Using a Compliant Sensor with a Position Controlled Robot [PDF]
, 2012 A different way of force control is presented, that is specially advantageous for position controlled robots. Instead of usual force control laws we rely on the well tuned position control loop and just use the force sensor to measure the target pose or ...
Hirzinger, Gerd +7 more
core +1 more source
Fuzzy adaptive variable impedance control on deformable shield of defecation smart care robot
Biomimetic Intelligence and RoboticsPrecise control of the contact force is crucial in the application of non-wearable defecation smart care (DSC) robot. A deformable shield equipped with a pressure sensing function is designed, with a bending angle that can be adjusted according to ...
Lingling Chen +3 more
doaj +1 more source
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
doaj +1 more source
FEBS Letters, EarlyView.Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav +2 more
wiley +1 more source
Improving the contact resistance at low force using gold coated carbon nanotube surfaces
, 2008 Investigations to determine the electrical contact performance under repeated load cycles at low force conditions for carbonnanotube (CNT) coated surfaces were performed.
Yunus, E.M. +2 more
core +1 more source
TechnologiesIn response to the safety control requirements of heavy robot operations, to address the problems of cumbersome, time-consuming, poor accuracy and low real-time performance in robot end contact force estimation without force sensors by using traditional ...
Peizhang Wu +5 more
doaj +1 more source
A Finite Element-Based Elastic-Plastic Model for the Contact of Rough Surfaces
Modelling and Simulation in Engineering, 2011 Three-dimensional elastic-plastic contact of two nominally flat rough surfaces is considered. Equations governing the shoulder-shoulder contact of asperities are derived based on the asperity constitutive relations from a finite element model of the ...
Ali Sepehri, Kambiz Farhang
doaj +1 more source
Polarization of contact forces in multi-contact systems
European Journal of Computational Mechanics, 2010 The aim of this study is to identify the homogenized laws modeling the overall behaviour of multi-contact systems. At the moment, these systems are generally analyzed either by continuum mechanics or micro-mechanics and a multi-scale approach. These approaches differ from the phenomenological approach traditionally used for modeling the behavior of ...
Dumont, Serge +2 more
openaire +3 more sources
FEBS Letters, EarlyView.How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley +1 more source
InformationThe wheel–rail contact force is a crucial indicator for ensuring the secure operation of a heavy-load train. However, obtaining the real-time wheel–rail contact force of a heavy-load train is a challenging task as, due to safety considerations, it is not
Tianning Wen +3 more
doaj +1 more source