控制化学工业中和过程最终控制要素的预测模型

IF 2.8 4区 生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY
Y Dharshan, D Devasena, K Srinivasan
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引用次数: 0

摘要

背景21 世纪,随着工业开始向自动化方向发展,工业化程度不断提高。部件/物品的生产需要大量的资源和能源。近年来,水在工业中的使用量不断增加,因为它既是一种资源,也是一种能源。加工液体的中和是通过最终控制元件添加溶液来实现的,而大多数工业都在使用基于气动的控制阀,这种控制阀在调节添加剂方面存在劣势。提议的系统采用了不同的控制器,如使用线性矩阵不等式调整的比例积分控制器、改进的内部模型控制器、模型预测控制器和非线性自回归模型(NAR),并对最终的控制元件进行了 pH 中和测试。实践证明,在中和过程中,NAR 模型在电动控制阀系统下的效果更好,其峰值为 7.08(pH 值),稳定时间为 75.16 秒,上升时间为 5.96 秒,最大过冲为 10.1%,回转速率为 0.结论根据所获得的结果可以看出,与电动控制阀配合使用的 NAR 控制器在中和溶液方面具有更好的功能。© 2024 化学工业学会(SCI)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Prediction models to control final control elements for neutralization process in chemical industries

BACKGROUND

Industrialization continues to increase in the 21st century, as industries start moving towards automation. Manufacturing of a component/item requires a lot of resources and energy. Usage of water in industries has increased in recent years, as it is used as both a resource and an energy generating source. Neutralization of a processed liquid is carried out by addition of solution through final control elements and most industries are utilizing pneumatic-based control valves, which have a disadvantage in the regulation of additives.

RESULTS

A motorized valve system is introduced, which is compared with the pneumatic system in terms of their performance. The proposed system is implemented with different controllers such as proportional–integral controller tuned using linear matrix inequalities, modified internal model controller, model predictive controller and nonlinear autoregressive (NAR) model, where the final control elements are tested for pH neutralization. On implementation of the proposed system the NAR model has proven to be better under the motorized control valve system for the neutralization process, with a peak value of 7.08 (pH), settling time of 75.16 s, rise time of 5.96 s, maximum overshoot of 10.1%, slew rate of 0.21 per second, integral square error of 0.95, integral absolute error of 0.48 and integral time absolute error of 1.88.

CONCLUSION

Based on the results obtained it is observed that the NAR controller utilized with motorized control valve has better functionality in neutralizing a solution. © 2024 Society of Chemical Industry (SCI).

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来源期刊
CiteScore
7.00
自引率
5.90%
发文量
268
审稿时长
1.7 months
期刊介绍: Journal of Chemical Technology and Biotechnology(JCTB) is an international, inter-disciplinary peer-reviewed journal concerned with the application of scientific discoveries and advancements in chemical and biological technology that aim towards economically and environmentally sustainable industrial processes.
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