STATE ESTIMATION WITH PREDICTIVE CORRECTION FOR FIXED BED REACTORS

Liu Lianghong; Zhou Xinggui; Yuan Weikang(UNILAB Research Center of Chemical Reaction Engineering

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STATE ESTIMATION WITH PREDICTIVE CORRECTION FOR FIXED BED REACTORS

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- STATE ESTIMATION WITH PREDICTIVE CORRECTION FOR FIXED BED REACTORS
- CIESC Journal Issue 2, (1996)
- 作者机构：
  
  华东理工大学国家重点化学工程联合实验室!上海200237,华东理工大学国家重点化学工程联合实验室!上海200237,华东理工大学国家重点化学工程联合实验室,上海,200237
- 作者简介：
- 基金信息：
- DOI：
  CLC： Q05
- Online First：25 April 1996，
  
  Published：25 April 1996
- 稿件说明：
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Liu Lianghong, Zhou Xinggui, Yuan Weikang(UNILAB Research Center of Chemical Reaction Engineering. STATE ESTIMATION WITH PREDICTIVE CORRECTION FOR FIXED BED REACTORS[J]. CIESC Journal, 1996, (2).
DOI：

Liu Lianghong, Zhou Xinggui, Yuan Weikang(UNILAB Research Center of Chemical Reaction Engineering. STATE ESTIMATION WITH PREDICTIVE CORRECTION FOR FIXED BED REACTORS[J]. CIESC Journal, 1996, (2). DOI：

摘要

本文建立了基于后集中方法的固定床反应器的非线性状态估计算法，并分别用正交配置法集中偏微分方程、Gear法积分常微分方程、Hybrid法求解非线性代数方程，实现状态估计器的在线估计．针对工业实际过程中浓度测量滞后较大、采样时间间隔较长的特点，提出了浓度估计的预测校正，进一步提高了状态估计器对模型误差的克服能力．同时，在实验和仿真两方面考察了固定床反应器状态估计器的性能，无论是收敛性还是鲁棒性，其品质都令人满意．

Abstract

This paper suggests a late lumping method for a nonlinear state estimation algorithm for wall-cooled fixed bed reactors.The estimator in PDEs is discretized using orthogonal collocation to a set of ODEs and then integrated by the Gear method.The nonlinear algebraic estimation equations for concentration are solved by the Hybrid method.For an industrial process

in considering of the longer sampling interval and time delay of concentration measurement

the estimation of concentration is corrected by a predictive method.The performance of the state estimator is examined by both experimentation and simulation.It is observed that the convergence of the algorithm and the robustness of the estimator are satisfactory.

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