Abstract/Details

Design of plantwide control systems


2001 2001

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Abstract (summary)

Plantwide control refers to the control of an entire plant, consisting of many interconnected unit operations. The design of a plantwide control system is an open-ended problem, complicated by the large number of choices available for control structure, controller type and so on. A systematic method is thus needed to decompose this large-scale problem into more manageable sub-problems. It is the goal of this thesis to develop such methods.

We have developed a hierarchical procedure for synthesizing a plantwide control system. The thrust of the procedure is to design a plantwide control system that ensures optimal operation in the presence of unmeasured disturbances and model uncertainty. The procedure decomposes the plantwide control problem into six levels of decisions. As one proceeds down the hierarchy, more modeling, not structural details, are added. Alternatives are generated at each level and evaluated based on profitability. Both steady-state economics and dynamic controllability are important criteria in the selection of an optimal control strategy. Several practical issues arise in the application of the procedure to typical industrial problems. Short-cut methods and new tools have been proposed to deal with these issues more effectively and efficiently.

Indexing (details)


Subject
Chemical engineering;
Industrial engineering
Classification
0542: Chemical engineering
0546: Industrial engineering
Identifier / keyword
Applied sciences, Control structure, Decision-making, Plant-wide control
Title
Design of plantwide control systems
Author
Mahajanam, Rama Venkata
Number of pages
160
Publication year
2001
Degree date
2001
School code
0118
Source
DAI-B 62/04, Dissertation Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
9780493219752, 0493219757
Advisor
Zheng, Alex Z. Q.; Douglas, James M.
University/institution
University of Massachusetts Amherst
University location
United States -- Massachusetts
Degree
Ph.D.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
3012161
ProQuest document ID
230748262
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/230748262
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