https://scholars.lib.ntu.edu.tw/handle/123456789/409690
標題: | An algorithm for optimizing the unsteady chemical processes by simulated annealing | 作者: | Sun D.-Y. Chen C.-L. |
關鍵字: | Control parameterization;Dynamic optimization;Dynamic programming;Nonlinear programming;Simulated annealing | 公開日期: | 2004 | 卷: | 37 | 期: | 6 | 起(迄)頁: | 711-722 | 來源出版物: | Journal of Chemical Engineering of Japan | 摘要: | In this paper, we propose an algorithm based on basic simulated annealing (SA) to optimize unsteady chemical systems. By parametrizing the control inputs, the system described by a set of differential-algebraic equations is first transferred into a nonlinear programming (NLP) problem. By using a linear function, we furthermore convert discretized control inputs and time grids into the control profile with a variable time length to improve numerical quality. Thus, the discretized control inputs and the corresponding execution time lengths will be considered as a set of decision variables. Then, these decision variables are globally determined by our algorithm with the help of a special integrator to optimize the performance index. In order to exhibit the facility of the proposed algorithm, several typical examples are provided. ? 2004 The Society of Chemical Engineers, Japan. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/409690 | ISSN: | 00219592 | DOI: | 10.1252/jcej.37.711 |
顯示於: | 化學工程學系 |
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