Advanced Radial Position Control of a Recording Beam for Super Multilayer Disc with Separated Guide Layer

2013 ◽  
Vol 52 (9S2) ◽  
pp. 09LC03
Author(s):  
Hiroyuki Tanaka ◽  
Kazuo Takahashi ◽  
Masakazu Ogasawara ◽  
Shoji Taniguchi
Keyword(s):  
Position Control ◽  
Radial Position ◽  
Recording Beam

scholarly journals A Novel Driving Scheme for Three-Phase Bearingless Induction Machine with Split Winding

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4930
Author(s):  
Francisco Elvis Carvalho Souza ◽  
Werbet Silva ◽  
Andrés Ortiz Salazar ◽  
José Paiva ◽  
Diego Moura ◽  
...  
Keyword(s):  
Control System ◽  
Digital Signal Processor ◽  
Position Control ◽  
Radial Position ◽  
Three Phase ◽  
Control Configuration ◽  
Two Phases ◽  
Split Winding ◽  
Drive And Control ◽  
And Control

In order to reduce the costs of implementing the radial position control system of a three-phase bearingless machine with split winding, this article proposes a driving method that uses only two phases of the system instead of the three-phase traditional one. It reduces from six to four the number of inverter legs, drivers, sensors, and current controllers necessary to drive and control the system. To justify the proposal, this new power and control configuration was applied to a 250 W machine controlled by a digital signal processor (DSP). The results obtained demonstrated that it is possible to carry out the radial position control through two phases, without loss of performance in relation to the conventional three-phase drive and control system.

scholarly journals Parameter Measurements and Radial Position Control Characteristics of a Permanent Magnet-Type Bearingless Motor Under Loaded Conditions

2000 ◽  
Vol 120 (8-9) ◽  
pp. 1015-1023 ◽  
Author(s):  
Masahide Ooshima ◽  
Satoru Miyazawa ◽  
Akira Chiba ◽  
Fukuzo Nakamura ◽  
Tadashi Fukao
Keyword(s):  
Permanent Magnet ◽  
Position Control ◽  
Radial Position ◽  
Bearingless Motor
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