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Experimental evaluation of a controller using a variable transformation Smith predictor for a nonlinear process with dead time

Authors
Journal
ISA Transactions
0019-0578
Publisher
Elsevier
Publication Date
Volume
47
Issue
2
Identifiers
DOI: 10.1016/j.isatra.2007.12.001
Keywords
  • Nonlinear Control
  • Hemispherical Tank
  • Globally Linearised Controller
  • Dead Time

Abstract

Abstract In this work, a globally linearised controller (GLC) for a hemispherical tank level process with dead time is experimentally evaluated. A controller based on the combination of Smith predication and variable transformation [Anandanatarajan R, Chidambaram M, Jayasingh T, Design of controller using variable transformations for a nonlinear process with dead time. ISA Trans 2005;44:81–91] in the transformed domain is used in simulation of and experimentation on a hemispherical tank level process. The results are compared with those obtained with the conventional PI controller, about the nominal operating point of 50%.

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