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。
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.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2016年第3期685-689,共5页
CIESC Journal
基金
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)~~
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
model-predictive control
process control
parameter estimation
integral process
state correction