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Study and optimization of a linear piezoelectric actuator

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A Theory of Traffic Regulators for Deterministic Networks with Application to Interleaved Regulators

Jean-Yves Le Boudec

We define the minimal interleaved regulator, which generalizes the Urgency Based Shaper that was recently proposed by Specht and Samii as a simpler alternative to per-flow reshaping in deterministic networks with aggregate scheduling. With this regulator, ...

Arxiv2018

Control and Optimization of Batch Chemical Processes

Dominique Bonvin, Grégory François

A batch process is characterized by the repetition of time-varying operations of finite duration. Due to the repetition, there are two independent “time” variables, namely, the run time during a batch and the batch index. Accordingly, the control and optim ...

Butterworth-Heinemann2017

Influence of Piezoelectric Actuator Geometry on Resonant Vibrating Amplitude

Yves Perriard, Yoan René Cyrille Civet, Dan Shi

Piezoelectric actuator has been used in different applications because of its compact structure compared to magnetic actuators. This paper reports the influence of piezoelectric actuators geometry on the plate vibrating amplitude. Through a Finite Element ...

IEEE2016

High-speed phase-shifting common-path quantitative phase imaging with a piezoelectric actuator

Theo Lasser, Antonio Lopez, Miguel Sison, Séverine Coquoz, Amir Jean Nahas

We present a phase-shifting quantitative phase imaging technique providing high temporal and spatial phase stability and high acquisition speed. A piezoelectric microfabricated phase modulator allows tunable modulation frequencies up to the kHz range. Afte ...

Spie-Soc Photo-Optical Instrumentation Engineers2016

Distributed Multi-Robot Learning using Particle Swarm Optimization

Ezequiel Leonardo Di Mario

This thesis studies the automatic design and optimization of high-performing robust controllers for mobile robots using exclusively on-board resources. Due to the often large parameter space and noisy performance metrics, this constitutes an expensive opti ...

EPFL2015

The force (F) and the power consumption (P ) of a magnetic actuator are modeled, measured and optimized in the context of developing micro-actuators for large arrays, such as in portable tactile displays for the visually impaired. We present a novel analyt ...

Elsevier2015

The web is a complicated world where users are demanding and where small optimizations can make a big difference. Users want the information fast, but they also want the best quality. In terms of images, there is a well documented solution to that; Virtual ...

2015

The principle of the superposition of ultrasonic frequency vibrations to conventional machining techniques is known and practiced since the 1950s under the name of ultrasonic machining. Using ultrasonics, many good properties appear including reduced thrus ...

EPFL2015

The history of distributed computing is full of trade-offs between safety and liveness. For instance, one of the most celebrated results in the field, namely the impossibility of consensus in an asynchronous system basically says that we cannot devise an a ...

ACM Press2015

Safety-Liveness Exclusion in Distributed Computing

Rachid Guerraoui, Victor Bushkov

ACM2015