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TECHNICAL PAPERS

On-Line Identification of Hysteretic Systems

[+] Author and Article Information
A. G. Chassiakos

School of Engineering, California State University, Long Beach, CA 90840

S. F. Masri, A. W. Smyth

School of Engineering, University of Southern California, Los Angeles, CA 90089

T. K. Caughey

Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA 91125

J. Appl. Mech 65(1), 194-203 (Mar 01, 1998) (10 pages) doi:10.1115/1.2789025 History: Received August 23, 1996; Revised July 18, 1997; Online October 25, 2007

Abstract

Using adaptive estimation approaches, a method is presented for the on-line identification of hysteretic systems under arbitrary dynamic environments. The availability of such an identification approach is crucial for the on-line control and monitoring of nonlinear structural systems to be actively controlled. In spite of the challenges encountered in the identification of the hereditary nature of the restoring force of such nonlinear systems, it is shown through the use of simulation studies and experimental measurements that the proposed approach can yield reliable estimates of the hysteretic restoring force under a very wide range of excitation levels and response ranges.

Copyright © 1998 by The American Society of Mechanical Engineers
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