Comparison between Backstepping and Input-Output Linearization Techniques for pH Process Control
Publish place: 5th International Congress on Chemical Engineering
Publish Year: 1386
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ICHEC05_260
تاریخ نمایه سازی: 7 بهمن 1386
Abstract:
pH control is a challenging problem due to its highly nonlinear nature. In this paper the performances of an adaptive backstepping controller (BSC) scheme and a global linearizing controller (GLC) are compared for pH control. First, based on the pH full order model a GLC is designed and shown to be identical with BSC proposed in the literature. Next in order to avoid state estimator design, BSC and GLC are designed based on pH reduced order model and again identity of two controllers have been established. Through computer simulations, it has been shown that the performance of GLC based on reduced state model is better than that of GLC designed based on pH full order model.
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Authors
Ali Nejati
Department of Chemical Engineering, Isfahan University of Technology, Isfahan, ۸۴۱۵۶-۸۳۱۱۱, IRAN
Mohammad Shahrokhi
Chemical and Petroleum Engineering Department, Sharif University of Technology, P.O. Box ۱۱۳۶۵-۹۴۶۵, Azadi Avenue,Tehran, IRAN
Arjomand Mehrabani
Department of Chemical Engineering, Isfahan University of Technology, Isfahan, ۸۴۱۵۶-۸۳۱۱۱, IRAN
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