Application of memetic algorithm in modelling discrete-time multivariable dynamics systems
Evolutionary algorithm (EA) such as genetic algorithm (GA) has demonstrated to be an effective method for identification of single-input-single-output (SISO) system. However, for multivariable systems, increasing the orders and the non-linear degrees of the model will result in excessively complex m...
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| Format: | Article |
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Mechanical Systems and Signal Processing
2008
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| author | Ahmad, R. Jamaluddin, H. Hussain, Mohd Azlan |
| author_facet | Ahmad, R. Jamaluddin, H. Hussain, Mohd Azlan |
| author_sort | Ahmad, R. |
| collection | UM |
| description | Evolutionary algorithm (EA) such as genetic algorithm (GA) has demonstrated to be an effective method for identification of single-input-single-output (SISO) system. However, for multivariable systems, increasing the orders and the non-linear degrees of the model will result in excessively complex model and the identification procedure for the systems is more often difficult because couplings between inputs and outputs. There are more possible structures to choose from and more parameters are required to obtain a good fit. In this work, a new model structure selection in system identification problems based on a modified GA with an element of local search known as memetic algorithm (MA) is adopted. This paper describes the procedure and investigates the performance and the effectiveness of MA based on a few case studies. The results indicate that the proposed algorithm is able to select the model structure of a system successfully. A comparison of MA with other algorithms such as GAs demonstrates that MA is capable of producing adequate and parsimonious models effectively. |
| first_indexed | 2024-03-06T05:17:48Z |
| format | Article |
| id | um.eprints-7044 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T05:17:48Z |
| publishDate | 2008 |
| publisher | Mechanical Systems and Signal Processing |
| record_format | dspace |
| spelling | um.eprints-70442021-02-10T03:47:16Z http://eprints.um.edu.my/7044/ Application of memetic algorithm in modelling discrete-time multivariable dynamics systems Ahmad, R. Jamaluddin, H. Hussain, Mohd Azlan TA Engineering (General). Civil engineering (General) TP Chemical technology Evolutionary algorithm (EA) such as genetic algorithm (GA) has demonstrated to be an effective method for identification of single-input-single-output (SISO) system. However, for multivariable systems, increasing the orders and the non-linear degrees of the model will result in excessively complex model and the identification procedure for the systems is more often difficult because couplings between inputs and outputs. There are more possible structures to choose from and more parameters are required to obtain a good fit. In this work, a new model structure selection in system identification problems based on a modified GA with an element of local search known as memetic algorithm (MA) is adopted. This paper describes the procedure and investigates the performance and the effectiveness of MA based on a few case studies. The results indicate that the proposed algorithm is able to select the model structure of a system successfully. A comparison of MA with other algorithms such as GAs demonstrates that MA is capable of producing adequate and parsimonious models effectively. Mechanical Systems and Signal Processing 2008 Article PeerReviewed Ahmad, R. and Jamaluddin, H. and Hussain, Mohd Azlan (2008) Application of memetic algorithm in modelling discrete-time multivariable dynamics systems. Mechanical Systems and Signal Processing, 22 (7). pp. 1595-1609. ISSN 0888-3270, DOI https://doi.org/10.1016/j.ymssp.2008.01.006 <https://doi.org/10.1016/j.ymssp.2008.01.006>. http://ac.els-cdn.com/S0888327008000277/1-s2.0-S0888327008000277-main.pdf?_tid=9cd78b84-860c-11e2-98a7-00000aab0f01&acdnat=1362540130_621e062fa1a772511a19ad3436fe5cd6 DOI 10.1016/j.ymssp.2008.01.006 |
| spellingShingle | TA Engineering (General). Civil engineering (General) TP Chemical technology Ahmad, R. Jamaluddin, H. Hussain, Mohd Azlan Application of memetic algorithm in modelling discrete-time multivariable dynamics systems |
| title | Application of memetic algorithm in modelling discrete-time multivariable dynamics systems |
| title_full | Application of memetic algorithm in modelling discrete-time multivariable dynamics systems |
| title_fullStr | Application of memetic algorithm in modelling discrete-time multivariable dynamics systems |
| title_full_unstemmed | Application of memetic algorithm in modelling discrete-time multivariable dynamics systems |
| title_short | Application of memetic algorithm in modelling discrete-time multivariable dynamics systems |
| title_sort | application of memetic algorithm in modelling discrete time multivariable dynamics systems |
| topic | TA Engineering (General). Civil engineering (General) TP Chemical technology |
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