NDLI: Sensitivity of Optimum Design of Rotor System With Magnetic Bearing Via Multilevel Technique

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Shiau, T. N. Wu, M. D. Chang, J. R. Yang, T. H.
Abstract	There are many nonlinear factors in the optimization process. The objective of this study is to determine some effects of these nonlinear factors on the sensitivity of optimum design. A rotor-bearing system is composed of rigid disks, shaft elements with distributed mass and stiffness, and magnetic bearings. To obtain an optimum design, the objectives including shaft weight and amplitude of shaft lateral response as well as the constraints including critical speeds and bending stresses are considered. The inner radii of shaft elements, the bias currents of magnetic bearings, and the axial positions of bearings and disks are chosen as the design variables. The single objective method, the multi-objective method and the multilevel technique are employed to deal with the problem of optimality. Optimum results obtained by applying these methods are compared and discussed in this study. Finally, the sensitivity of optimum design is analyzed to determine what nonlinear effects the position of magnetic bearings have on different initial designs.
Sponsorship	International Gas Turbine Institute
Starting Page	1153
Ending Page	1174
Page Count	22
File Format	PDF
ISBN	0791836096
DOI	10.1115/GT2002-30636
e-ISBN	0791836010
Volume Number	Volume 4: Turbo Expo 2002, Parts A and B
Conference Proceedings	ASME Turbo Expo 2002: Power for Land, Sea, and Air
Language	English
Publisher Date	2002-06-03
Publisher Place	Amsterdam, The Netherlands
Access Restriction	Subscribed
Subject Keyword	Sensitivity Optimum design Magnetic bearing Multilevel Design Rotors Magnetic bearings
Content Type	Text
Resource Type	Article

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