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Optimum Input for System Identification for Systems With Actuator Saturation Using Genetic Algorithms

[+] Author Affiliations
Marco P. Schoen

Idaho State University, Pocatello, ID

Sinchai Chinvorarat

King Mongkut’s Institute of Technology, Bangkok, Thailand

Gerhard M. Schoen

Steinmaur, Switzerland

Paper No. IMECE2002-33429, pp. 201-207; 7 pages
doi:10.1115/IMECE2002-33429
From:
  • ASME 2002 International Mechanical Engineering Congress and Exposition
  • Dynamic Systems and Control
  • New Orleans, Louisiana, USA, November 17–22, 2002
  • Conference Sponsors: Dynamic Systems and Control Division
  • ISBN: 0-7918-3629-0 | eISBN: 0-7918-1691-5, 0-7918-1692-3, 0-7918-1693-1
  • Copyright © 2002 by ASME

abstract

This paper presents an efficient implementation of constraint optimum input design for on-line system identification for systems exhibiting actuator saturation. The constraint optimal input is calculated recursively based on the imminent available information content in the inverse correlation matrix of the data. The new input is computed one step ahead of time with a predictive filter so that it will increase the information content in the inverse correlation matrix. The information content is maximized with help of a simple genetic algorithm. A numerical example indicates superiority of the proposed method over the traditional method where white gaussian noise is used as the input.

Copyright © 2002 by ASME

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