Hybrid intelligent optimal control for alumina evaporation processes

WANG Yonggang; PANG Xinfu; LI Haibo; CHAI Tianyou

doi:10.3969/j.issn.0438-1157.2013.12.011

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Hybrid intelligent optimal control for alumina evaporation processes

更新时间：2025-12-10

- Hybrid intelligent optimal control for alumina evaporation processes
- CIESC Journal Issue 12, Pages: 4342-4347(2013)
- 作者机构：
  
  1. 沈阳农业大学信息与电气工程学院,辽宁,沈阳,110866
  2. 东北大学流程工业国家重点实验室,辽宁,沈阳,110004
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2013.12.011
  CLC： Q245.12TP273
- Online First：05 December 2013，
  
  Published：05 December 2013
- 稿件说明：
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WANG Yonggang, PANG Xinfu, LI Haibo, et al. Hybrid intelligent optimal control for alumina evaporation processes[J]. CIESC Journal, 2013, (12): 4342-4347.
DOI：

WANG Yonggang, PANG Xinfu, LI Haibo, et al. Hybrid intelligent optimal control for alumina evaporation processes[J]. CIESC Journal, 2013, (12): 4342-4347. DOI： 10.3969/j.issn.0438-1157.2013.12.011.

摘要

氧化铝蒸发过程的关键工艺指标碱液浓度不能在线检测且与控制回路输出之间的动态特性难以用精确的数学模型描述，采用已有的优化控制方法不能实现上述运行层的优化。针对上述问题提出了由基于案例推理的预设定模型，基于专家规则的前馈、反馈补偿模型以及基于块式偏最小二乘的软测量模型组成的混合智能优化设定控制方法。采用某氧化铝厂蒸发过程的实际数据进行仿真实验，实验研究表明该方法可以有效地将碱液浓度控制在工艺要求的区间内。

Abstract

The key technical index

namely

alkaline solution concentration of alumina evaporation process

can not be measured on-line.Moreover

it is usually difficult to describe the dynamics characteristic between the techniques indices and the control loops by using an accurate mathematical model.Thus

the existing optimal methods can not solve the optimal control for operation of the alumina evaporation process.In this paper

a hybrid intelligent optimal control method is developed.The proposed method is comprised of a presetting model based on case-base reasoning (CBR)

soft sensor model based on recursive partial least squares (RPLS)

feedforward and feedback compensators based on expert rules.Simulation is researched by the actual data of the alumina evaporation process.The simulation results show that the proposed methods can control the alkaline solution concentration within their scopes.

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