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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/3952

Title: Isotropic optimal controller for rotor bearing systems
Authors: ElMadany, Mohamed M.
Keywords: Controller design
Optimal control
Rotating machinery
Issue Date: 2009
Abstract: Increasing demands on rotating machinery in terms of higher running speed, less weight and noise, safety and longevity require well controlled dynamics of the system. This paper addresses a means of actively controlling the synchronous vibrations of a flexible rotor running in flexibly-mounted journal bearings. An isotropic optimal controller of the anisotropic rotor-bearing system in complex state space is designed. The isotropic controller essentially eliminates the backward unbalance response component, leading to circular whirling. Simulation results are presented which demonstrate that the isotropic optimal control is more efficient in controlling unbalance whirl than the conventional optimal control.
URI: http://hdl.handle.net/123456789/3952
Appears in Collections:Journal of the King Saud University - Engineering Sciences
Journal of the King Saud University - Engineering Sciences

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