A simplified control-oriented model of the activated sludge process
A simplified control-oriented model of the activated sludge process
复制标题
活性污泥过程的简化控制模型
DOI：
10.1080/13873959508837003
复制
发表时间：
1995
影响因子：
1.9
通讯作者：
U. Jeppsson
中科院分区：
文献类型：
--
作者：
U. Jeppsson
自动控制系统依靠模型来预测不久的将来，并依靠识别算法来使模型适应不断变化的过程行为。传统上为科学目的而开发的高度复杂的活性污泥过程模型无法通过在线测量来识别，并且以其目前的形式不适合过程控制目的。基于动态过程的不同时间尺度的模型解耦是解决该问题的一种可能方法。它允许结合基于分层控制结构中的简化模型的预测来实现更简单且实际适用的控制器。本文讨论了这些概念，并提出了一个降阶模型，描述中等时间尺度（几小时/天）内的碳去除、硝化和反硝化。模型参数可以通过可用的在线测量来识别，并且动态行为可以根据 IAWQ 活性污泥模型的计算机模拟进行验证。 1.（少）
Automatic control systems rely on models to predict the near future and identification algorithms to adapt the models to changing process behaviour. The traditionally highly complex models of the activated sludge process developed for scientific purposes cannot be identified from on-line measurements and are not suited for process control purposes in their present form. Model decoupling based on the different time scales of the dynamic processes is one possible way of attacking this problem. It allows the implementation of more simple and realistically applicable controllers in combination with predictions based on simplified models in hierarchical control structure. This paper discusses these concepts and presents a reduced order model describing carbonaceous removal, nitrification, and denitrification in a medium time scale (several hours/days). The model parameters are identifiable from available on-line measurements and the dynamic behaviour is verified against computer simulations of the IAWQ activated sludge model no. 1. (Less)