工业脱塔塔系统辨识

2019 9th IEEE International Conference on Control System, Computing and Engineering (ICCSCE) Pub Date : 2019-11-01 DOI:10.1109/ICCSCE47578.2019.9068541

Syeda Anmol Fatima, H. Zabiri, S. A. Taqvi, N. Ramli

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引用次数: 7

摘要

由于精馏塔的非线性和复杂性，建立合适的模型是最具挑战性的问题。采用传递函数的一阶加时滞(FOPTD)模型和sigmoid函数描述的带外源输入的非线性自回归(NLARX)模型对工业脱硝塔的动力学进行了识别。结果表明，线性模型不能很好地描述系统的行为，而NLARX模型能很好地描述脱硝塔的非线性动力学。建立的NLARX模型对顶部和底部成分的预测能力分别为91.26%和86.56%。

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System Identification of Industrial Debutanizer Column

Development of a suitable model is the most challenging problem for the distillation columns due to their nonlinear and complex behavior. First Order Plus Time Delay (FOPTD) models using transfer functions and Nonlinear Autoregressive with Exogenous Input (NLARX) models described by sigmoid function were used in this study to identify the dynamics of the industrial debutanizer column. The results demonstrated that linear models were not able to approximate the behavior of system whereas the NLARX models performed well in capturing the nonlinear dynamics of debutanizer column. The prediction capability of the developed NLARX model was found to be 91.26% and 86.56% for top and bottom composition respectively.

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2019 9th IEEE International Conference on Control System, Computing and Engineering (ICCSCE)

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