System identification and analysis of a non-isothermal CSTR for control purposes
Date of Publication
1996
Document Type
Master's Thesis
Degree Name
Master of Science in Chemical Engineering
Subject Categories
Chemical Engineering
College
Gokongwei College of Engineering
Department/Unit
Chemical Engineering
Thesis Adviser
Carlito Salazar
Defense Panel Chair
Joseph Auresenia
Defense Panel Member
Leonila Abella
Aliento Estalilla
Abstract/Summary
The non-isothermal Continuous-Stirred Tank Reactor (CSTR) system is identified experimentally making use of least squares method. Mathematical models such as difference equation, differential equation and transfer function showing the effect of water flowrate and reactants' concentration hydrogen peroxide and sodium thiosulfate (H2O2 and Na2S2O3) on reactor temperature are developed. Based on the developed models, parameters of commonly used feedback controllers are evaluated using the recommended Ziegler-Nichols controller settings. Stability of the control system is also analyzed using the Bode Stability criterion. Results shows that the order of the linear differential equations defining the effect of the variables method above on reactor temperature does not exceed two (2). While Proportional-Integral-Derivative (PID) mode best controls the CSTR at a predefined setpoint, P mode is sufficient to control it using Na2S2O3 concentration as manipulated variable. Further, Ziegler-Nichols controller settings fail for PI mode of control.
Abstract Format
html
Language
English
Format
Accession Number
TG02470
Shelf Location
Archives, The Learning Commons, 12F Henry Sy Sr. Hall
Physical Description
100 numb. leaves
Keywords
System identification; Mathematical models; Temperature control; Chemical processes; Continuous-stirred tank reactor; Digital control systems
Recommended Citation
Quitain, A. T. (1996). System identification and analysis of a non-isothermal CSTR for control purposes. Retrieved from https://animorepository.dlsu.edu.ph/etd_masteral/1708