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Addis Ababa University Libraries Electronic Thesis and Dissertations: AAU-ETD! >
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Thesis - Chemical Engineering >
Please use this identifier to cite or link to this item:
http://hdl.handle.net/123456789/1993
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| Title: | Adaptive Control Design for a MIMO Chemical Reactor |
| Authors: | Abubeker, Yimam |
| Advisors: | Dr.D Venkatanarsaiah, |
| Copyright: | 2004 |
| Date Added: | 4-Feb-2009 |
| Publisher: | Addis Ababa University |
| Abstract: | Abstract
The major disadvantage of non-adaptive control systems is that these control systems
cannot cope with fluctuation in the parameters of the process. One solution to this problem is
to use high levels of feedback gain to decrease the sensitivity of the control system. However
high gain controllers have two major problems: large signal magnitude and closed loop
instability. The solution to this problem is to develop a control system that adapts to changes
in the process. This paper presents the design of adaptive controller to a MIMO chemical
reactor. The proposed adaptive controller is tested by using Math lab Simulink program and
its performance is compared to a conventional controller for a different situation. The paper
demonstrated that while the adaptive controller exhibits superior performance in the presence
of noise the convergence time is typically large and there is a large overshoot. To resolve
these problems of adaptive controller, the proposed controller is redesigned by modifying the
adaptation law. And the results show a significant improvement in the performance of the
adaptive controller without excessive increase in the adaptation rate.
life of the low and middle income inner-city residents of Addis Ababa. Financial,
institutional and legal problems are also seen as the major problems that hinder the
implementation of LDPs in Addis Ababa. |
| Description: | A thesis submitted to the Graduate Studies of Addis Ababa University in Partial
fulfillment of the Degree of Masters of Science in Chemical Engineering
(Process engineering) |
| URI: | http://hdl.handle.net/123456789/1993 |
| Appears in: | Thesis - Chemical Engineering
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