NDLI: Adaptive and H∞ control of a strong acid

Content Provider	IEEE Xplore Digital Library
Author	Benny, A. Tharakan, L.G. Jaffar, N.E. Jaleel, J.A.
Copyright Year	2013
Abstract	pH neutralization is recognized as a difficult control problem in terms of practical control. The difficulties arise from high process nonlinearity and from changes in the pH characteristics due to changes in influent concentration. Various techniques have been developed to control the process pH. This paper considers both adaptive and $H_{∞}$ controllers for pH regulation and mainly emphasize on the simulation study of a strong acid-strong base pH process and its controls. The adaptive controller under consideration is a combined feedback-feed forward controller while the $H_{∞}$ controller is a feedback controller. For random input disturbance with large variations, $H_{∞}$ controller outperforms the adaptive controller. But for step disturbance the adaptive controller shows good response. Simulation results confirm that a robust control of the process is achievable for both adaptive and $H_{∞}$ controllers.
Sponsorship	IEEE Kerala Sect.
Starting Page	662
Ending Page	667
File Size	329384
Page Count	6
File Format	PDF
ISBN	9781467350891
e-ISBN	9781467350907
DOI	10.1109/iMac4s.2013.6526492
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-03-22
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Adaptation models H∞ control Process control Control systems PH control Chemical reactors Mathematical model Adaptive control Strong acid-strong base system Equations
Content Type	Text
Resource Type	Article

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