SIMULATION PACKAGE SYSTEM DESIGN TO ANALYSIS AND CONTROL A DISTILLATION COLUMN USING FREQUENCY RESPONSE METHOD

إنجليزية
number: 
950
Degree: 
Author: 
Yossor Riadh Abdul-Majeed Al-Ani
Supervisor: 
Dr .Nasreen R. jber
year: 
2004

 Because of the practical importance of analyzing and controlling the systems arises the need to study the frequency response analysis for any system of several industrial plants. The frequency response used for the studies of dynamic characteristics of chemical processes and control loops in the present work. The process control implemented for different control strategies and compare between them by using frequency response techniques. Frequency response methods also give transient response information.By defining such frequency response quantities as gain margin and phase margin, the transient response can be analyzed. Special software was constructed and designed for the purpose of analyzing the systems using Bode plots technique to determine the characteristics, which also used as interface control to perform the transient response; this system was given the abbreviation IFRA (Interface for Frequency Response Analysis). In this work, using VISUAL BASIC6.0  and MATLAB  programs to studying and analyze the system by Bode plots, which is represents a method to formthe frequency response, which is used to analyze the system and to determine 6.5 its characteristics such as stability or steady-state error characteristics. In this work we presents dynamic analysis of the distillation column,which is Multi-input Multi-output (MIMO) system by using different control strategies such as feedback loops with P, PI, PID-controller or decoupling also with different controllers. Also, using one closed-loop with different controllers and the other loop is open.

 

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