Physical measurements in a permanent magnet field varying spatially

2006 ◽  
Vol 99 (8) ◽  
pp. 08B507
Author(s):  
A. S. Arrott ◽  
T. L. Templeton
Author(s):  
Julien Gomand ◽  
Ghislain Remy ◽  
Abdelmounaim Tounzi ◽  
Pierre-Jean Barre ◽  
Jean-Paul Hautier

1966 ◽  
Vol 37 (3) ◽  
pp. 1143-1146 ◽  
Author(s):  
B. W. Wentworth ◽  
E. L. Ellis

1986 ◽  
Vol 106 (1) ◽  
pp. 95-104
Author(s):  
Toshimi Abukawa ◽  
Kazuo Tawara ◽  
Noriyoshi Takahashi ◽  
Fumio Tajima ◽  
Toshio Tomite

Author(s):  
S.D. Grigorescu ◽  
A. Craciunescu ◽  
S.V. Paturca ◽  
L. Codreanu ◽  
H. Andrei ◽  
...  

AbstractThis paper deals with a new coaxial linear permanent magnet motor. For a designed physical model of this motor, the representative magnetic spectrums are determined: the spectrum of the excitation field provided by cylindrical permanent magnet, and the spectrum of total magnetic field given by superposition of permanent magnet field and of energizing coil field.


1993 ◽  
Vol 29 (6) ◽  
pp. 2902-2904 ◽  
Author(s):  
H.A. Leupold ◽  
E. Potenziani ◽  
A.S. Tilak

1993 ◽  
Vol 73 (10) ◽  
pp. 6861-6863 ◽  
Author(s):  
Herbert A. Leupold ◽  
Anup S. Tilak ◽  
Ernest Potenziani

Author(s):  
Jonathan I. Miller ◽  
Tim J. Flack ◽  
David Cebon

A novel pneumatic valve was constructed to improve the response of air-actuated brakes for heavy vehicles to demand pressures generated during electronically controlled braking by an order of magnitude. Investigations were made into the interactions between the magnetic, mechanical, and electrical subsystems of the valve with a view toward informing design optimization. The valve was modeled using a magnetic circuit approach. The quasi-static model included the influences of the permanent magnet, field-line fringing, saturation, and the coil. Mechanical forces outputted by the model matched physical measurements with an error smaller than 10%, and magnetic fluxes throughout the circuit were generally within 20% of those found from experiments based on Faraday's law of induction, Gaussmeter measurements, and FEA simulations. A magneto-mechanical simulation of the valve switching states was created using mechanical and electrical equations, and curve-fits to the outputs of the magnetic circuit model. The simulation produced time histories of the valve's armature position that matched experimental measurements and adequately predicted working pressures. The final model required an approximation to the influence of the coil based on experimental results. Consequently, further research is recommended into the influence of solenoid coils on fringing in magnetic circuits.


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