Comparison of input-output pairing selection methods.
Decentralized control systems are attractive options for control of multivariable processes as compared to centralized control systems due to its design simplicity and failure tolerance. Depending on the plant size, a decentralized controller may consist of a few up to hundreds sets of single-input-...
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Final Year Project (FYP) |
| Language: | English |
| Published: |
2009
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/10356/16523 |
| _version_ | 1811681397886156800 |
|---|---|
| author | Chong, Chen Nee. |
| author2 | Vinay Kumar Kariwala |
| author_facet | Vinay Kumar Kariwala Chong, Chen Nee. |
| author_sort | Chong, Chen Nee. |
| collection | NTU |
| description | Decentralized control systems are attractive options for control of multivariable processes as compared to centralized control systems due to its design simplicity and failure tolerance. Depending on the plant size, a decentralized controller may consist of a few up to hundreds sets of single-input-single-output (SISO) sub-controllers. During the design of these SISO controllers, interactions among loops are assumed to be negligible. However, in the actual plant, loops interact with each other potentially leading to deterioration in closed-loop performance. Thus, it is important to pair inputs and outputs such that interactions are minimized.
Different patterns of pairing/interconnections between the system’s inputs and outputs can lead to different control configurations. As plant size increases, the number of possible configurations grows exponentially. In order to save costs and computing time, it is desired to have systematic approaches to screen out unfavorable configurations for large-scale systems. Apart from interaction minimization, it is desired to choose configurations that meet certain criteria, such as integrity, robustness and nominal performance, to enable the design of a controller to achieve an ideal control system. There are many input-output (IO) pairing methods available in literature. The main objective of this thesis is to compare the ability of the different methods in satisfying the above-mentioned criteria. Qualitative assessments and comparisons of the reviewed methods are presented. In addition, a case study on a 3 x 3 system is conducted to obtain simulation results on the dynamic performance of each pairing alternative. Lastly, this thesis points out open issues and provides guidelines regarding the future research directions in IO pairing. |
| first_indexed | 2024-10-01T03:40:18Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/16523 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:40:18Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | ntu-10356/165232023-03-03T15:33:50Z Comparison of input-output pairing selection methods. Chong, Chen Nee. Vinay Kumar Kariwala School of Chemical and Biomedical Engineering DRNTU::Engineering::Chemical engineering::Processes and operations Decentralized control systems are attractive options for control of multivariable processes as compared to centralized control systems due to its design simplicity and failure tolerance. Depending on the plant size, a decentralized controller may consist of a few up to hundreds sets of single-input-single-output (SISO) sub-controllers. During the design of these SISO controllers, interactions among loops are assumed to be negligible. However, in the actual plant, loops interact with each other potentially leading to deterioration in closed-loop performance. Thus, it is important to pair inputs and outputs such that interactions are minimized. Different patterns of pairing/interconnections between the system’s inputs and outputs can lead to different control configurations. As plant size increases, the number of possible configurations grows exponentially. In order to save costs and computing time, it is desired to have systematic approaches to screen out unfavorable configurations for large-scale systems. Apart from interaction minimization, it is desired to choose configurations that meet certain criteria, such as integrity, robustness and nominal performance, to enable the design of a controller to achieve an ideal control system. There are many input-output (IO) pairing methods available in literature. The main objective of this thesis is to compare the ability of the different methods in satisfying the above-mentioned criteria. Qualitative assessments and comparisons of the reviewed methods are presented. In addition, a case study on a 3 x 3 system is conducted to obtain simulation results on the dynamic performance of each pairing alternative. Lastly, this thesis points out open issues and provides guidelines regarding the future research directions in IO pairing. Bachelor of Engineering (Chemical and Biomolecular Engineering) 2009-05-27T01:37:24Z 2009-05-27T01:37:24Z 2009 2009 Final Year Project (FYP) http://hdl.handle.net/10356/16523 en Nanyang Technological University 79 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Chemical engineering::Processes and operations Chong, Chen Nee. Comparison of input-output pairing selection methods. |
| title | Comparison of input-output pairing selection methods. |
| title_full | Comparison of input-output pairing selection methods. |
| title_fullStr | Comparison of input-output pairing selection methods. |
| title_full_unstemmed | Comparison of input-output pairing selection methods. |
| title_short | Comparison of input-output pairing selection methods. |
| title_sort | comparison of input output pairing selection methods |
| topic | DRNTU::Engineering::Chemical engineering::Processes and operations |
| url | http://hdl.handle.net/10356/16523 |
| work_keys_str_mv | AT chongchennee comparisonofinputoutputpairingselectionmethods |