A predictive control algorithm of integral processes based on state correction and its application

doi:10.11949/j.issn.0438-1157.20151763

CIESC Journal ›› 2016, Vol. 67 ›› Issue (3): 685-689.DOI: 10.11949/j.issn.0438-1157.20151763

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A predictive control algorithm of integral processes based on state correction and its application

QI Lugang¹, LI Lili², LUAN Zhiye¹, LÜ Wenxiang¹, HUANG Dexian¹

1. Department of Automation, Tsinghua University, Beijing 100084, China;
2. Department of Computer Science, China Women's University, Beijing 100101, China

Received:2015-11-26 Revised:2015-12-11 Online:2016-01-12 Published:2016-03-05
Contact: 67
Supported by:
supported by the National Basic Research Program of China (2012CB720505) and the National Natural Science Foundation of China (21276137).

基于状态校正的积分对象预测控制算法及其应用

亓鲁刚¹, 李丽莉², 栾志业¹, 吕文祥¹, 黄德先¹

1. 清华大学自动化系, 北京 100084;
2. 中华女子学院计算机系, 北京 100101

通讯作者: 黄德先
基金资助:
国家重点基础研究发展计划项目(2012CB720505);国家自然科学基金项目(21276137)。

Abstract

Abstract:

For integral processes with large lag, strong dynamic disturbance, the predictive control algorithm based on first-order state correction was proposed. Considering the integral effect of deviation between predictive and actual state, it exerts state correction on the first-order dimension. Thus the controller's robustness is improved significantly. By simulation experiments, the effectiveness of the state correction algorithm was confirmed. And the algorithm has been adopted for liquid level control of flash tank in a refinery. The practical application results showed that the control effect is outstanding.

Key words: model-predictive control, process control, parameter estimation, integral process, state correction

摘要：

针对具有大滞后、强动态干扰的积分特性对象,提出了基于一阶状态校正的预测控制算法。算法考虑预测状态与其对应的实际测量值偏差的积分作用,在一阶维度上施加状态校正,从而大幅提高控制器的预测准确性与应对模型失配的能力。通过仿真对比验证了状态校正算法的有效性。本算法已实际应用于某炼厂闪蒸罐的液位控制,取得了较好的控制效果。

关键词: 模型预测控制, 过程控制, 参数估值, 积分对象, 状态校正

CLC Number:

TQ028.8

QI Lugang, LI Lili, LUAN Zhiye, LÜ Wenxiang, HUANG Dexian. A predictive control algorithm of integral processes based on state correction and its application[J]. CIESC Journal, 2016, 67(3): 685-689.

亓鲁刚, 李丽莉, 栾志业, 吕文祥, 黄德先. 基于状态校正的积分对象预测控制算法及其应用[J]. 化工学报, 2016, 67(3): 685-689.

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A predictive control algorithm of integral processes based on state correction and its application

基于状态校正的积分对象预测控制算法及其应用

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