Selective vibration control in a generic launch vehicle AIAA Paper 98-4930

Barai, Amalesh and Somanath, S and Pradeep, S (1998) Selective vibration control in a generic launch vehicle AIAA Paper 98-4930. In: AIAA/USAF/NASA/ISSMO Symposium on Multidisciplinary Analysis and Optimization, Sept. 2-4, 1998, St. Louis, MO.

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Suppression of vibration is almost universally desirable; nevertheless, in some structures, it is necessary to attenuate the vibration at certain critical parts faster. In launch vehicles, vibration is undesirable at locations where critical components, such as the inertial platform, are mounted. Vibration confinement and suppression of response at a faster rate at critical locations on a generic launch vehicle (GLV) are studied herein. A mathematical model of the GLV is generated using finite element techniques. The order of the system is reduced to a size that permits a feasible controller design. The open-loop system is characterized by the presence of rigid body modes. The controller design is based on a recent extension of the eigenspace assignment for vibration confinement. When applied to this problem, the response of the closed-loop system shows the suppression of the vibration at the selected location to be 50 percent faster than at other locations.13;

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Vibration Damping;Launch Vehicles;Control Systems Designreduced Order Modelsmathematical Modelsstiffness Matrix
Subjects: AERONAUTICS > Aeronautics (General)
Depositing User: Mr. N A
Date Deposited: 28 Jan 2006
Last Modified: 24 May 2010 04:10

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