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Séance de cours

Résonateur mécanique dans QUCS

Dans cours

MICRO-470: Scaling laws in micro & nanosystems

This class adresses scaling laws in MEMS/NEMS. The dominant physical effects and scaling effects when downsizing sensors and actuators in microsystems are discussed, across a broad range of actuation principles. ...

Description

Cette séance de cours introduit le concept d'utilisation de QUCS pour résoudre des oscillateurs harmoniques simples, reliant la mécanique aux circuits. Il couvre des circuits équivalents pour un résonateur mécanique, des éléments groupés généralisés, et l'application de QUCS pour résoudre un oscillateur mécanique simple. L'instructeur explique comment trouver la fréquence de résonance et analyser la réponse à une onde carrée d'un micromiroir, en utilisant des équations pour définir les constantes de ressort et les dimensions du faisceau. La séance de cours se termine par un exercice pratique impliquant des balayages de paramètres pour observer le changement de fréquence de résonance.

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Enseignant·e·s (3)

Philippe Renaud

Philippe Renaud is Professor at the Microsystem Laboratory (LMIS4) at EPFL. He is also the scientific director of the EPFL Center of MicroNanoTechnology (CMI). His main research area is related to micronano technologies in biomedical applications (BioMEMS) with emphasis on cell-chips, nanofluidics and bioelectronics. Ph. Renaud is invloved in many scientifics papers in his research area. He received his diploma in physics from the University of Neuchâtel (1983) and his Ph.D. degree from the University of Lausanne (1988). He was postdoctoral fellow at University of California, Berkeley (1988-89) and then at the IBM Zürich Research Laboratory in Switzerland (1990-91). In 1992, he joined the Sensors and Actuators group of the Swiss Center for Electronics and Microtechnology (CSEM) at Neuchâtel, Switzerland. He was appointed assistant professor at EPFL in 1994 and full professor in 1997. In summer 1996, he was visiting professor at the Tohoku University, Japan. Ph. Renaud is active in several scientific committee (scientific journals, international conferences, scientific advisory boards of companies, PhD thesis committee). He is also co-founder of the Nanotech-Montreux conference. Ph. Renaud is committed to valorization of basic research through his involvement in several high-tech start-up companies.

Niels Quack

Prof. Dr. Niels Quack received the M.Sc. degree from Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland, in 2005, and the Dr.Sc. degree from Eidgenössische Technische Hochschule Zürich (ETH), Zürich, Switzerland, in 2010. From 2011 to 2015, he was Postdoctoral Researcher and Visiting Scholar with the Integrated Photonics Laboratory, Berkeley Sensor and Actuator Center, University of California, Berkeley, CA, USA. From 2014 to 2015, he was Senior MEMS Engineer with Sercalo Microtechnology, Neuchâtel, Switzerland. He is currently an SNSF Assistant Professor with Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland. He has authored and co-authored more than 50 papers in leading technical journals and conferences. His research interests include photonic micro and nanosystems, with an emphasis on diamond photonics and silicon photonic MEMS. He is Steering Committee Member of the IEEE International Conference on Optical MEMS and Nanophotonics (OMN) and served as General Chair of the IEEE OMN 2018 and the Latsis Symposium 2019 on Diamond Photonics. He is a Senior Member of IEEE, Member of The Optical Society (OSA) and life member of SPIE.

Source officielle

Proximité ontologique

Physique

Électromagnétisme: Circuit électrique

Concepts associés (32)

Equivalent circuit

In electrical engineering, an equivalent circuit refers to a theoretical circuit that retains all of the electrical characteristics of a given circuit. Often, an equivalent circuit is sought that simplifies calculation, and more broadly, that is a simplest form of a more complex circuit in order to aid analysis. In its most common form, an equivalent circuit is made up of linear, passive elements. However, more complex equivalent circuits are used that approximate the nonlinear behavior of the original circuit as well.

Network analysis (electrical circuits)

In electrical engineering and electronics, a network is a collection of interconnected components. Network analysis is the process of finding the voltages across, and the currents through, all network components. There are many techniques for calculating these values; however, for the most part, the techniques assume linear components. Except where stated, the methods described in this article are applicable only to linear network analysis.

Théorème de Thévenin

Le théorème de Thévenin aurait peut-être été démontré par le scientifique allemand Hermann von Helmholtz en 1853 , puis en 1883 par l'ingénieur télégraphe français Léon Charles Thévenin. Ce théorème se déduit principalement des propriétés de linéarité et du principe de superposition qui en découle. Il s'utilise pour convertir une partie d'un réseau complexe en un dipôle plus simple.

Equivalent impedance transforms

An equivalent impedance is an equivalent circuit of an electrical network of impedance elements which presents the same impedance between all pairs of terminals as did the given network. This article describes mathematical transformations between some passive, linear impedance networks commonly found in electronic circuits. There are a number of very well known and often used equivalent circuits in linear network analysis. These include resistors in series, resistors in parallel and the extension to series and parallel circuits for capacitors, inductors and general impedances.

Théorème de Norton

Le théorème de Norton pour les réseaux électriques établit que tout circuit linéaire est équivalent à une source de courant idéale , en parallèle avec une simple résistance . Le théorème s'applique à toutes les impédances, pas uniquement aux résistances. L'énoncé de ce théorème a été publié en 1926 par l'ingénieur Edward Lawry Norton (1898-1983).

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Séances de cours associées (41)

Circuits : oscillateur et filtres LC

Explore les oscillateurs LC, les filtres, la résonance et les pertes d'énergie dans les circuits avec inductances et condensateurs.

Oscillateur harmonique forcé

Explore l'oscillateur harmonique forcé et amorti, en se concentrant sur la résonance et les conditions initiales.

Index des réponses et des sauts d'unités MOOC: Electrotechnique II

Explique les réponses d'indice, les sauts d'unité, et les réponses d'étape des inductances et des condensateurs.

Oscillateur harmonique forcé: Phénomène de résonance

Couvre l'oscillateur harmonique forcé et amorti, y compris la solution harmonique et le phénomène de résonance.

Thevenin et Norton Théorèmes

Couvre Thevenin et Norton théorèmes pour simplifier les circuits complexes en équivalents.

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Concepts associés (32)

Equivalent circuit

Network analysis (electrical circuits)

Théorème de Thévenin

Equivalent impedance transforms

Théorème de Norton

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