Active vibration suppression of beams with discrete actuators using optimal dynamic inversion

Ali, Faruque SK and Padhi, Radhakant (2006) Active vibration suppression of beams with discrete actuators using optimal dynamic inversion. In: 9th International Conference on Control, Automation, Robotics and Vision,, Dec 05-08, 2006, Singapore, pp. 1115-1120.

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Abstract

Most of the structural elements like beams, cables etc. are flexible and should be modeled as distributed parameter systems (DPS) to represent the reality better. For large structures, the usual approach of 'modal representation' is not an accurate representation. Moreover, for excessive vibrations (possibly due to strong wind, earthquake etc.), external power source (controller) is needed to suppress it, as the natural damping of these structures is usually small. In this paper, we propose to use a recently developed optinial dynamic inversion technique to design a set of discrete controllers for this purpose. We assume that the control force to the structure is applied through finite number of actuators, which are located at predefined locations in the spatial domain. The method used in this paper determines control forces directly from the partial differential equation (PDE) model of the system. The formulation has better practical significance, both because it leads to a closed form solution of the controller (hence avoids computational issues) as well as because a set of discrete actuators along the spatial domain can be implemented with relative ease (as compared to a continuous actuator).

Item Type:	Conference Paper
Publisher:	IEEE
Additional Information:	Copyright 2006 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords:	Dynamic Inversion,Optimal Dynamic Inversion,Structural Control,Beams.
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	02 Sep 2010 05:04
Last Modified:	26 Feb 2019 05:57
URI:	http://eprints.iisc.ac.in/id/eprint/30527

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