System identification with generalized orthonormal basis functions: An application to flexible structures

Volkan Nalbantoǧlu, J. Bokor, Gary Balas, P. Gáspár

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

This paper presents an application of a multi-input/multi-output identification technique based on system-generated orthonormal basis functions to a flexible structure. A priori information about the poles of the system, part of which corresponds to the natural frequencies of the structure, is used to generate the orthonormal basis functions. A multivariable model is identified for the experimental flexible structure by using these orthonormal basis functions. It is shown that including a priori knowledge of the system dynamics via the use of orthonormal basis functions into the identification process has the advantage of reducing the number of parameters to be estimated. The multivariable model is used to design an H controller for the experimental structure to suppress vibrations. The controller is implemented on the structure and very good agreement is obtained between the simulations and the experimental results.

Original languageEnglish
Pages (from-to)245-259
Number of pages15
JournalControl Engineering Practice
Volume11
Issue number3
DOIs
Publication statusPublished - Mar 2003

Fingerprint

Flexible Structure
Flexible structures
Orthonormal basis
System Identification
Basis Functions
Identification (control systems)
Controller
Controllers
Natural Frequency
System Dynamics
Pole
Poles
Natural frequencies
Dynamical systems
Vibration
Output
Experimental Results
Model
Simulation

Keywords

  • Flexible structures
  • H∞ control
  • Matrix partial fraction expansion
  • Orthonormal basis functions
  • System identification

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering

Cite this

System identification with generalized orthonormal basis functions : An application to flexible structures. / Nalbantoǧlu, Volkan; Bokor, J.; Balas, Gary; Gáspár, P.

In: Control Engineering Practice, Vol. 11, No. 3, 03.2003, p. 245-259.

Research output: Contribution to journalArticle

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