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Apr 26, 2012
Nonlinear Fault-Tolerant Control of a Space Truss Structure with an MR Damper
Authors: Han Wang, Luyu Li, Gangbing Song, James B. Dabney, and Thomas L. HarmanAuthor Affiliations
Publication: Earth and Space 2010: Engineering, Science, Construction, and Operations in Challenging Environments
Abstract
Fault detection and isolation (FDI) technology can provide early warning of faulty sensors and actuators in order to prevent events that lead to catastrophic failures. The main objective of this paper is to describe the application of FDI techniques for vibration suppression of a space truss structure. Thus, this paper presents a Linear Matrix Inequality (LMI) based fixed-order FDI filter design theorem and approach. Necessary and sufficient conditions for the existence of a solution to detecting and isolating faults using the H∞ formulation are provided. Furthermore, a Fuzzy Fault Tolerant Controller (FFTC) for a base isolation structure model based on the FDI filter is developed to preserve the pre-specified performance of the space truss structure in the presence of faults. A numerical example is given as well as FDI and FFTC results which demonstrate that the designed filter can successfully detect and isolate faults including displacement sensor and accelerometer failure, and that the FFTC can maintain excellent performance of vibration suppression in faulty conditions.
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© 2010 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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Han Wang
Department of Electrical Engineering, University of Houston, TX, USA
Luyu Li
School of Civil Engineering, Dalian Institute of Technology, China and Department of Mechanical Engineering, University of Houston, TX, USA
Gangbing Song
Department of Electrical Engineering, University of Houston, TX, USA and Department of Mechanical Engineering, University of Houston, TX, USA
James B. Dabney
School of Science and Computer Engineering, University of Houston - Clear Lake, TX, USA
Thomas L. Harman
School of Science and Computer Engineering, University of Houston - Clear Lake, TX, USA
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