سال انتشار: ۱۳۸۶

محل انتشار: پنجمین کنگره بین المللی مهندسی شیمی

تعداد صفحات: ۸

نویسنده(ها):

Ali Nejati – Department of Chemical Engineering, Isfahan University of Technology, Isfahan, 84156-83111, IRAN
Mohammad Shahrokhi – Chemical and Petroleum Engineering Department, Sharif University of Technology, P.O. Box 11365-9465, Azadi Avenue,Tehran, IRAN
Arjomand Mehrabani – Department of Chemical Engineering, Isfahan University of Technology, Isfahan, 84156-83111, IRAN

چکیده:

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.