A Frequency Domain Identification Scheme for Flexible Structure Control

[+] Author and Article Information
A. P. Tzes, S. Yurkovich

The Ohio State University, Department of Electrical Engineering, Columbus, Ohio 43210

J. Dyn. Sys., Meas., Control 112(3), 427-434 (Sep 01, 1990) (8 pages) doi:10.1115/1.2896160 History: Received March 01, 1988; Revised April 01, 1989; Online March 17, 2008


Transfer function identification schemes for use in self-tuning control applications are considered. Frequency domain methods generally require less computational load than time domain methods, and for certain classes of systems may be more accurate. For control purposes, however, a time domain parameterization of the system transfer function is often preferred, because of the direct relationship to controller parameters. In this paper we present a new method called Time-varying Transfer Function Estimation (TTFE) in which system parameters are computed through identification in the frequency domain. The method is particularly well suited for flexible structure control problems, and a self-tuning control law with frequency shaping is derived and demonstrated on a flexible manipulator system.

Copyright © 1990 by The American Society of Mechanical Engineers
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