MODAL TESTING AND SUBOPTIMAL VIBRATION CONTROL OF FLEXIBLE ROTOR BEARING SYSTEM BY USING A MAGNETIC BEARING

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A suboptimal output feedback controller is designed based on a reduced order model and applied to a flexible rotor bearing system in order to control the unstable or lightly damped vibrations occurring during operation. The reduced order model is a truncated modal equation of the distributed parameter system obtained through the singular perturbation. The instability problem arising from the spillover effects caused by the uncontrolled high frequency modes is prevented through the constrained optimization by incorporating the spillover term into the performance index. The application of the matrix minimum principle yields a set of matrix equation similar to the unconstrained output feedback controller. The efficiency of the proposed method is demonstrated experimentally with aflexible rotor by using a magnetic bearing.
Publisher
ASME-AMER SOC MECHANICAL ENG
Issue Date
1992-06
Language
English
Article Type
Article
Keywords

ELECTROMAGNETIC BEARING; SUPERCRITICAL SHAFT; FEEDBACK-CONTROL

Citation

JOURNAL OF DYNAMIC SYSTEMS MEASUREMENT AND CONTROL-TRANSACTIONS OF THE ASME, v.114, no.2, pp.244 - 252

ISSN
0022-0434
URI
http://hdl.handle.net/10203/62992
Appears in Collection
ME-Journal Papers(저널논문)
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