Integration of soft computing and fractional derivatives in adaptive control

J. Tar, Attila L. Bencsik

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Realizing that generality and uniformity of the usual Soft Computing (SC) structures exclude the application of plausible simplifications relevant in the case of whole problem classes resulted in the idea that a novel branch of soft computing could be developed by the use of which far simpler and more lucid uniform structures and procedures could be applied than in the traditional ones. Such a novel approach to computational cybernetics akin to SC was developed at Budapest Tech to control inaccurately and incompletely modeled dynamic systems under external disturbances. Hydraulic servo valve controlled differential cylinders as non-linear, strongly coupled multivariable electromechanical tools serve as excellent paradigms of such difficulties. Their control has to cope with the problem of instabilities due to the friction forces between the piston and the cylinder, as well as with uncertainties and variation of the hydrodynamic parameters that makes it unrealistic to develop an accurate static model for them. In this paper a combination of this novel method with the use of fractional derivatives is applied for the control of a hydraulic differential cylinder. Simulation results well exemplifying the conclusions are also presented.

Original languageEnglish
Pages (from-to)603-616
Number of pages14
JournalComputing and Informatics
Volume24
Issue number6
Publication statusPublished - 2005

Fingerprint

Soft computing
Derivatives
Hydraulics
Cybernetics
Pistons
Dynamical systems
Hydrodynamics
Friction

Keywords

  • Adaptive control
  • Hydraulic differential cylinders
  • Soft computing
  • Uniform structures and procedures

ASJC Scopus subject areas

  • Artificial Intelligence

Cite this

Integration of soft computing and fractional derivatives in adaptive control. / Tar, J.; Bencsik, Attila L.

In: Computing and Informatics, Vol. 24, No. 6, 2005, p. 603-616.

Research output: Contribution to journalArticle

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