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Indexed by:期刊论文

Date of Publication:2012-09-01

Journal:JOURNAL OF VIBRATION AND CONTROL

Included Journals:SCIE、EI、Scopus

Volume:18

Issue:10

Page Number:1436-1453

ISSN No.:1077-5463

Key Words:Fault tolerant control; magneto-rheological (MR) dampers; semi-active vibration control; truss structure

Abstract:In recent years, magneto-rheological (MR) dampers have been used to control the response of structures. This paper presents the design and application of an H-infinity fault detection and isolation (FDI) filter and fault tolerant controller (FTC) for truss vibration control systems using MR dampers. A linear matrix inequality formulation is used to design a full order robust H infinity filter to estimate faulty input signals. A fault tolerant H-infinity controller is designed for the combined system of plant and filter, minimizing the control objective selected in the presence of disturbances and faults. A truss structure with an MR damper is used to validate the FDI and FTC controller design through numerical simulations. The residuals obtained from the filter through simulation clearly identify the fault signals. The simulation results of the proposed FTC controller confirm its effectiveness for vibration suppression of the faulty truss system.