Identification of Multi-Input Multi-Output Linear Systems From Frequency Response Data

[+] Author and Article Information
P. L. Lin

Institute of Electronics, National Chiao Tung University, Taiwan, R.O.C.

Y. C. Wu

Department of Control Engineering, National Chiao Tung University, Taiwan, R.O.C.

J. Dyn. Sys., Meas., Control 104(1), 58-64 (Mar 01, 1982) (7 pages) doi:10.1115/1.3149633 History: Received September 01, 1980; Online July 21, 2009


A procedure for identifying a multi-input multi-output linear system from frequency response data is developed. Individual transfer functions from individual input to individual output are identified via the generalized least-squares theory. Orders of the transfer functions are determined by testing the residual. The minimal order multi-input multi-output system is identified based on the formation of a composite system comprising the subsystems associated with all individual outputs followed by decomposition. This is actually the problem of minimal realization involving inexact system parameters.

Copyright © 1982 by ASME
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