Magnetic interaction effects in ELETTRA segmented pure permanent magnet undulators

2002 ◽  
Author(s):  
B. Diviacco ◽  
R.P. Wallker
Keyword(s):  
Permanent Magnet ◽  
Magnetic Interaction ◽  
Interaction Effects

Layer-resolved study of magnetic interaction effects in heterostructure dot arrays

2006 ◽  
Vol 88 (11) ◽  
pp. 112502 ◽  
Author(s):  
Y. Choi ◽  
D. R. Lee ◽  
J. W. Freeland ◽  
G. Srajer ◽  
V. Metlushko
Keyword(s):  
Magnetic Interaction ◽  
Interaction Effects

scholarly journals High Repulsion Permanent Magnet

2018 ◽  
Author(s):  
Umer Farooq
Keyword(s):  
Current Efficiency ◽  
Permanent Magnet ◽  
Basic Research ◽  
Magnetic Interaction ◽  
Current Level ◽  
Basic Experiments

Basic experiments that were described in the paper ‘Basic research; emerging of extra efficiency’ showed that at higher current, efficiency of a magnetic interaction increases substantially. However, it is not always possible using of higher current level. To reduce balanced force and to get extra efficiency at lower current a thorough research was conducted, too. During the research a new kind of permanent magnet emerged. I have named this kind of permanent magnet as High Repulsion/ Permeable permanent magnet. Making process of this magnet is very simple but function of this magnet is very important. It provides significantly more efficiency than ordinary permanent magnet at lower current levels.A piece of non -magnetized material was added to the interacting surface of a permanent magnet, then the magnet was interacted with the same electromagnet that was interacted with an ordinary permanent magnet. Addition of permeability to a permanent magnet provided marvelous results. Permeability- added permanent magnet used lower input and provided stronger output in comparison with ordinary permanent magnet.

Piezoelectric energy reclamation based on frequency up-conversion technique for digital actuator autonomous additional functions

2017 ◽  
Vol 28 (12) ◽  
pp. 1682-1696 ◽  
Author(s):  
Linjuan Yan ◽  
Adrien Badel ◽  
Fabien Formosa ◽  
Laurent Petit
Keyword(s):  
Permanent Magnet ◽  
Cantilever Beam ◽  
Energy Harvester ◽  
Mechanical Energy ◽  
Magnetic Interaction ◽  
Interaction Force ◽  
Vibration Energy ◽  
Optimized Design ◽  
Vibration Energy Harvester ◽  
Piezoelectric Energy

A piezoelectric vibration energy harvester aiming at collecting energy from the operation of an electromagnetic digital actuator is presented. It is based on the frequency up-conversion and can simultaneously obtain the information of discrete position location. The objective is an improved reliability of such digital actuators ensuring sample controls of the actuator positions. The considered electromagnetic digital actuator is capable of achieving two-dimensional in-plane movements by switching a mobile permanent magnet among four discrete positions. The demonstration of a first step toward integrated additional autonomous functions scavenging a part of the mechanical energy of the mobile permanent magnet is achieved. The vibration energy harvester consists of a piezoelectric cantilever beam magnetically attached to the mobile permanent magnet. The limited magnetic interaction force allows a frequency up-conversion strategy to be set. The frequency up-conversion technique that is used here consists of a “low frequency” excitation that drives a much higher natural frequency oscillator. Indeed, once the energy harvester separates from the mobile permanent magnet, a free oscillation occurs and the induced mechanical energy is harvested. This design concept is numerically analyzed and experimentally validated. Harvested energy of 4.7 µJ is obtained from preliminary experiments using a simple out-of-plane cantilever beam with 9 N/m stiffness and 16 mN magnetic attraction between the vibration energy harvester and the mobile permanent magnet when they contact each other. This energy is in accordance with the requirements for wireless communication of simple information. Finally, an L-shaped cantilever beam optimized design is proposed for future in-plane integration.

Surface and magnetic interaction effects inMn3O4nanoparticles

2004 ◽  
Vol 70 (17) ◽  
Author(s):  
E. Winkler ◽  
R. D. Zysler ◽  
D. Fiorani
Keyword(s):  
Magnetic Interaction ◽  
Interaction Effects

Magnetic interaction between multiple seeded YBCO bulks and the permanent magnet guideway

2004 ◽  
Vol 407 (1-2) ◽  
pp. 82-87 ◽  
Author(s):  
H.H Song ◽  
O De Haas ◽  
Z.Y Ren ◽  
X.R Wang ◽  
J Zheng ◽  
...  
Keyword(s):  
Permanent Magnet ◽  
Magnetic Interaction ◽  
Permanent Magnet Guideway
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