Concept

Pendule (physique)

Publications associées (38)

An analysis of a gyro-free inertial system for INS/GNSS navigation

Although the concept of determining angular velocity out of the readings of multiple, displaced accelerometers is not new, apparently it has not yet matured into practical technologies. A new generation of low-cost MEMS accelerometers, which is expected to ...

IEEE2016

Numerical modelling of variable friction sliding base isolators

David Michael Volpe Ruggiero

As the desire for high performance buildings increases, a number of solutions to enhance the dynamic response of structures have been explored and implemented. In recent years, base isolation has become a practical and effective strategy for earthquake res ...

2015

Experimental assessment of the speed of light perturbation in free-fall absolute gravimeters

Sergey Sibiryakov, Diego Blas Temino

Precision absolute gravity measurements are growing in importance, especially in the context of the new definition of the kilogram. For the case of free fall absolute gravimeters with a Michelson-type interferometer tracking the position of a free falling ...

Iop Publishing Ltd2015

The motion of a 2D pendulum in a channel subjected to an incoming flow

François Gallaire, Andrea Fani

The flow around a tethered cylinder subjected to an incoming flow transverse to its main axis and confined in a channel is investigated by means of global stability analysis of the full coupled body-fluid problem. When the cylinder is strongly confined (ra ...

Cambridge University Press2015

Liquid Ropes: A Geometrical Model for Thin Viscous Jet Instabilities

Pierre-Thomas Paul Brun

Thin, viscous fluid threads falling onto a moving belt behave in a way reminiscent of a sewing machine, generating a rich variety of periodic stitchlike patterns including meanders, W patterns, alternating loops, and translated coiling. These patterns form ...

American Physical Society2015

Analyse, synthèse et création d'échappements horlogers par la théorie des engrenages

Olivier Laesser

In principle, knowledge of watch and clock escapements is acquired through the study of the geometry and operation of numerous realizations, studied patiently one after the other. Knowing the classics, one can hope to construct a new realizations by borrow ...

EPFL2014

Sliding Mode Control in Ziegler’s Pendulum With Tracking Force: Novel Modeling Considerations

Mehran Khaghani, Ehsan Sarshari

Ziegler's pendulum is an appropriate model of a nonconservative dynamic system. By considering gravity effect, new equations of motion are extracted from Newton's motion laws. The instability of equilibriums is determined by linear stability analysis. Chao ...

2013

Dynamics of capillary self-alignment for mesoscopic foil devices

Jürgen Brugger, Massimo Mastrangeli

We report experimental evidence for three sequential, distinct dynamic regimes in the capillary self-alignment of centimeter-sized foil dies released at large uniaxial offsets from equilibrium. We show that the initial transient wetting regime, along with ...

American Institute of Physics2013

Phase anomalies in Bessel-Gauss beams

Hans Peter Herzig, Toralf Scharf, Myun Sik Kim

Bessel-Gauss beams are known as non-diffracting beams. They can be obtained by focusing an annularly shaped collimated laser beam. Here, we report for the first time on the direct measurement of the phase evolution of such beams by relying on longitudinal- ...

Optical Society of America2012

Feedback Linearizability and Flatness in Restricted Control Systems

Philippe Müllhaupt, Basile Graf

The loss of feedback linearizability of control systems is studied when restricted to a submanifold of the state-space. The slow approximation of singularly perturbed systems also falls into this category. We show that even if the static-feedback lineariza ...

2011

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