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Analytical Determination of the Phase Inductances of a Brushless DC Motor With Faulhaber Winding

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Method and device for determining plasma characteristics

Ivo Furno, Alan Howling, Philippe Frédérique Bruno Guittienne

The invention relates to a method and a device for determining plasma characteristics, the method comprising the steps of: - arranging a measurement probe (2) having a self-inductance in proximity to a plasma (3) to establish inductive coupling between the ...

2016

Optimization of the force and power consumption of a microfabricated magnetic actuator

Herbert Shea, Juan José Zarate

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

Driver electronics for efficient low noise stepper motor operation

Stepper motors are a very convenient and economical solution for accurate positioning applications where long lifetime and low wear are required. Their particularly simple open-loop operation reduces the number of control components to a minimum. However, ...

2014

An Automatic Test Bench for Complete Characterization of Vibration-Energy Harvesters

Nico de Rooij, Danick Briand, Jinyu Jason Ruan, Andres Felipe Vasquez Quintero, Pattanaphong Janphuang, Robert Andrew Lockhart

This paper presents an automated test bench, based on a rigorous measurement procedure, used to fully characterize vibration energy harvesters including determination of the resonance frequency, impedance, optimal load, and output power as a function of bo ...

Ieee-Inst Electrical Electronics Engineers Inc2013

Method for a switching loss reduction in PM drives

Andreas Gassner

Energy saving becomes more and more important. Therefore different improvements have been made in motor design, electronic devices and software in order to increase the overall efficiency of electronic motor drives. Permanent Magnet Synchronous Motors (PMS ...

2012

First pulse technique for brushless DC motor standstill position detection based on iron B-H hysteresis

Yves Perriard, Miroslav Markovic, Omar Scaglione

This paper introduces a promising technique, called the first-pulse technique, for detecting the rotor position of a brushless DC motor at standstill. The technique is based on the B-H hysteresis characteristics of the stator iron. Depending on the rotor p ...

Institute of Electrical and Electronics Engineers2012

An Actuated Transfemoral Prosthesis with Optimized Polycentric Knee Joint

Serge Pfeifer

Powered transfemoral prostheses can give above-knee amputees more flexibility than passive devices, for example allowing them to ascend and descend stairs more easily, or allowing a more natural and symmetrical gait pattern. To achieve the high torques req ...

2012

The objective of this project is to determine in an analytical way the modes of vibration of the stator of a brushless DC motor. The knowledge of these modes is important. Once the vibration modes are determined we can avoid their excitation and thus reduc ...

2011

The development of very high-speed motors has evolved fascinatingly in the last few years. Due to their speed, their low weight and their high power density, the need for such motors has recently increased for various different applications. Among them, su ...

EPFL2010

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Micro Aerial Vehicles (MAVs) with perching capabilities can be used to efficiently place sensors in aloft locations. A major challenge for perching is to build a lightweight mechanism that can be easily mounted on a MAV, allowing it to perch (attach and de ...

2010