scholarly journals A Parametric Solution to the Generalized Bias Linearization Problem

Actuators ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 14 ◽  
Author(s):  
David Meeker ◽  
Eric Maslen

Previously, a generalized bias current linearization was presented for the control of radial magnetic bearings. However, a numerically intensive procedure was required to obtain bias linearization currents. The present work develops an analytical solution to the generalized bias linearization problem in which solutions are indexed by a small number of parameters. The formulation also permits the analytical computation of bias linearization currents for faulted-coil cases. A limitation of the solution presented is that it only applies to stators with an even number of evenly spaces poles of equal area.

Water ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 932
Author(s):  
Rodrigo González ◽  
Aldo Tamburrino ◽  
Andrea Vacca ◽  
Michele Iervolino

The flow between two parallel plates driven by a pulsatile pressure gradient was studied analytically with a second-order velocity expansion. The resulting velocity distribution was compared with a numerical solution of the momentum equation to validate the analytical solution, with excellent agreement between the two approaches. From the velocity distribution, the analytical computation of the discharge, wall shear stress, discharge, and dispersion enhancements were also computed. The influence on the solution of the dimensionless governing parameters and of the value of the rheological index was discussed.


Proceedings ◽  
2020 ◽  
Vol 64 (1) ◽  
pp. 25
Author(s):  
Yefa Hu ◽  
Kezhen Yang ◽  
Xinhua Guo ◽  
Jian Zhou ◽  
Huachun Wu

A switching power amplifier is a key component of the actuator of an active magnetic bearing, and its reliability has an important impact on the performance of a magnetic bearing system. This paper analyzes the topologies of a switching power amplifier of an active magnetic bearing. In the case of different coil pair arrangements and bias current distributions, comprehensive evaluation of the different topologies of switching power amplifiers is introduced. This evaluation has a guiding role in the design of a switching power amplifier of an active magnetic bearing.


2006 ◽  
Vol 126 (10) ◽  
pp. 1399-1405 ◽  
Author(s):  
Yuki Kato ◽  
Toshiya Yoshida ◽  
Katsumi Ohniwa

2008 ◽  
Vol 165 (2) ◽  
pp. 69-76 ◽  
Author(s):  
Yuki Kato ◽  
Toshiya Yoshida ◽  
Katsumi Ohniwa

2007 ◽  
Vol 43 (3) ◽  
pp. 1052-1060 ◽  
Author(s):  
M. Necip Sahinkaya ◽  
Ahu E. Hartavi

1999 ◽  
Vol 32 (2) ◽  
pp. 7487-7492 ◽  
Author(s):  
Guang-Ren Duan ◽  
Zhan-Yuan Wu ◽  
David Howe

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