Concept

Transmission intégrale

Publications associées (10)

Sex-based Differences in Front Crawl and Butterfly Sprint Performance in Age-group Swimmers

Objectives To identify the key variables influencing 50 m sprint performance in front crawl and butterfly strokes and determine the predominant predictors of sex-related performance differences in each technique in age-group swimmers. Methods Thirty national-level age-group swimmers (15 boys and 15 girls; age 13.5 +/- 1.0 years) underwent assessments of anthropometry, biological maturation, neuromuscular performance (dynamic strength index of upper and lower limbs), anaerobic critical velocity, tethered swi

PUBLIC LIBRARY SCIENCE2025

On the use of reservation-based autonomous vehicles for demand management

Nikolaos Geroliminis, Raphael Ali Francis Lamotte

Automated mobility on demand is foreseen as the future of urban passenger mobility. While mixed-traffic for autonomous and conventional vehicles could be considered, separation amplifies the benefits of automation. Combined with mobility as a service, sepa ...

2017

Modelling Urban Transitions: A Social Practice Theoretic Approach to the Urban Metabolism

Urban growth and the increase of the human environmental imprint has led to a growing interest in urban sustainability, a field mainly addressed by urban ecology and urban metabolism studies. The realisation that the urban material and energy flows are mainly driven by household activities resulted in the acknowledgement that to understand the drivers of urban metabolic trajectories, it is necessary to include social factors into the onceptualisation of the urban system. However, so far no satisfying and op

2017

Lower hybrid current drive experiments with different launched wave frequencies in the EAST tokamak

Joan Decker, Jian Wang, Mingkui Wang, Fang Liu

EAST has been equipped with two high power lower hybrid current drive (LHCD) systems with operating frequencies of 2.45 GHz and 4.6 GHz. Comparative LHCD experiments with the two different frequencies were performed in the same conditions of plasma for the ...

Amer Inst Physics2016

Data-driven extraction of drive functions for legged locomotion: A study on Cheetah-cub robot

Auke Ijspeert

The process of finding working gaits for legged robots always, to different extents, includes manual tuning, systematic search, or optimization of control parameters. This process populates a dataset of control parameter vectors and respective robot behavior factors, like forward speed. The dataset obtained from a tuning process can include many gaits which share a similar performance in one behavior factor, e.g. speed, but differ in the control parameter vectors used. Our question here is, using the tuning

2013

Maximum Control Structure of a Series Hybrid Electric Vehicle using Supercapacitor

Philippe Barrade

The main problem with Hybrid Electric Vehicles (HEV) is the management of batteries. We suggest to replace the batteries by an energy storage ystem made of supercapacitors on a series HEV with two traction drive. A maximum Control Structure (MCS) of such a ...

2005

Wheel torque control for a rough terrain rover

Roland Siegwart, Michel Lauria, Pierre Lamon

Navigating in rough terrain is a complex task that requires the robot to be considered as a holistic system. Algorithms, which don’t consider the physical dimensions and capabilities of the mobile robot lead to inefficient motion and suffer from a lack of robustness. A physical model of the robot is necessary for trajectory control. In this paper, quasi-static modeling of a six-wheeled robot with a passive suspension mechanism is presented together with a method for selecting the optimal torques consi

2004

Device for measuring the amplitude of a force produced on an axis and a vehicle provided with said device

The inventive device for measuring forces, in particular radial forces produced on an axis or another piece, for example on the axis of the rear wheel of a motorcycle. Said device comprises a measuring sleeve (1) arranged around an axis (3) in such a way that a force to be measured is produced thereon by means of said sleeve. Said device also comprises a strain gauge (40) which makes it possible to determine the deformation amplitude of the part of the measuring sleeve in order to deduct the amplitude of th

2004

Nouveaux concepts de locomotion pour véhicules tout-terrain robotisés

Michel Lauria

Robotic ground vehicles are mechanisms that use gravity and contact forces with the ground to perform motion. They can either be wheeled, tracked or legged. In this thesis we will focus on n-wheeled vehicles able to perform ground following motion with all the wheels maintaining contact at the same time. The main goal of this work is to establish the implication of the topological architecture of the vehicle mechanism on criteria such as climbing skills, robustness, ground clearance, weight, power consumpti

EPFL2003

Topological Analysis of Robotic N-Wheeled Ground Vehicles

Roland Siegwart, Michel Lauria

Robotic ground vehicles are systems that use gravity and contact forces with the ground to perform motion. In this paper we will focus on n-wheeled vehicles able to perform motion with all the wheels maintaining contact at the same time. The main goal of this work is to establish the implication of the topological architecture of the vehicle mechanism on criteria such as climbing skills, robustness, weight, power consumption, and price. Tools will be provided to help the robot designer to understand the imp

2003

Graph Chat

Chattez avec Graph Search

Posez n’importe quelle question sur les cours, conférences, exercices, recherches, actualités, etc. de l’EPFL ou essayez les exemples de questions ci-dessous.

AVERTISSEMENT : Le chatbot Graph n'est pas programmé pour fournir des réponses explicites ou catégoriques à vos questions. Il transforme plutôt vos questions en demandes API qui sont distribuées aux différents services informatiques officiellement administrés par l'EPFL. Son but est uniquement de collecter et de recommander des références pertinentes à des contenus que vous pouvez explorer pour vous aider à répondre à vos questions.

Publications associées (10)