Optimal dynamic inversion-based semi-active control of benchmark bridge using MR dampers

Ali, Sk Faruque and Ramaswamy, Ananth (2009) Optimal dynamic inversion-based semi-active control of benchmark bridge using MR dampers. In: Structural Control and Health Monitoring, 16 (5). pp. 564-585.

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Abstract

A new two-stage state feedback control design approach has been developed to monitor the voltage supplied to magnetorheological (MR) dampers for semi-active vibration control of the benchmark highway bridge. The first stage contains a primary controller, which provides the force required to obtain a desired closed-loop response of the system. In the second stage, an optimal dynamic inversion (ODI) approach has been developed to obtain the amount of voltage to be supplied to each of the MR dampers such that it provides the required force prescribed by the primary controller. ODI is formulated by optimization with dynamic inversion, such that an optimal voltage is supplied to each damper in a set. The proposed control design has been simulated for both phase-I and phase-II study of the recently developed benchmark highway bridge problem. The efficiency of the proposed controller is analyzed in terms of the performance indices defined in the benchmark problem definition. Simulation results demonstrate that the proposed approach generally reduces peak response quantities over those obtained from the sample semi-active controller, although some response quantities have been seen to be increasing. Overall, the proposed control approach is quite competitive as compared with the sample semi-active control approach.

Item Type:	Journal Article
Publication:	Structural Control and Health Monitoring
Publisher:	Wiley
Additional Information:	copyright of this article belongs to Wiley.
Keywords:	dynamic inversion; magnetorheological dampers; optimal control; benchmark bridge; semi-active vibration control
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	21 Dec 2009 07:56
Last Modified:	19 Sep 2010 05:43
URI:	http://eprints.iisc.ac.in/id/eprint/22730

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