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基于时变偏扰模型的问歇过程迭代学习控制 被引量:6

Iterative learning control of batch processes based on time varying perturbation models
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摘要 为了克服模型与过程间的偏差,提出了一个基于时变偏扰模型的间歇过程迭代学习控制方法。利用主元回归(principal component regression,PCR)和部分最小二乘(partial least squares,PLS)方法,可以得到过程对象在正常运行轨迹附近线性化的模型。前一批次的模型预报误差被用来修正当前批次的模型预报值。每完成一个批次就利用新得到的数据对模型进行更新,该更新的模型也是在前一批次的控制轨迹基础上进行线性化得到的。主元回归和部分最小二乘方法能克服批次内不同阶段的控制量存在的相关关系从而得到更准确的模型。仿真结果表明:基于PCR和PLS模型的控制效果要好于基于多元线性回归(MLR)模型的控制效果。 This paper presents an iterative learning control technique for batch processes based on time varying perturbation models.Linear perturbation models for product quality,linearized around the nominal trajectories, are identified from process operational data using principal component regression (PCR) and partial least squares (PLS) regression.Model-plant mismatches are addressed by adding model prediction errors from the previous batch to the model predictions for the current batch.Thus,the perturbation mode...
出处 《清华大学学报(自然科学版)》 EI CAS CSCD 北大核心 2008年第S2期1771-1774,共4页 Journal of Tsinghua University(Science and Technology)
基金 国家自然科学基金资助项目(60404012) 国家"八六三"高技术项目(2007AA04Z193) 北京市科技新星计划(2006A62) EU (026515-2) UK Department for Innovation Universities and Skills (UK/China Fellowship for Excellence)
关键词 迭代学习控制 间歇过程 主元回归 部分最小二乘 iterative learning control batch processes principal component regression partial least square regression
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参考文献10

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同被引文献42

  • 1樊雷,王海清,宋执环,李平.基于广义预测控制的间歇生产迭代优化控制[J].化工自动化及仪表,2006,33(2):25-28. 被引量:9
  • 2陆宁云,王福利,高福荣,王姝.间歇过程的统计建模与在线监测[J].自动化学报,2006,32(3):400-410. 被引量:64
  • 3邸丽清,熊智华,阳宪惠.基于MPLS的间歇过程终点质量迭代优化控制[J].化工自动化及仪表,2007,34(2):10-12. 被引量:9
  • 4Xiong Z H, Zhang J, Wang X, Xu Y M. Integrated tracking control strategy for batch processes using a batchwise linear time-varying perturbation model. Control Theory & Applications, 2007, 1 (1): 178-188.
  • 5Lu N, Gao F. Stage-based process analysis and quality prediction for batch processes. Industrial and Engineering Chemistry Research, 2005, 44 (10) : 3547-3555.
  • 6Owens D H, Ha J. Iterative learning control-an optimization paradigm. Annual Reviews in Control, 2005, 29 (1): 57-70.
  • 7Lee J H, Lee K S. Iterative learning control applied to batch processes: an overview. Control Engineering Practice, 2007, 15 (10): 1306-1318.
  • 8Lu N, Gao F. Stage based process analysis and quality prediction for batch proeesses. Industrial and Engineering Chemistry Research, 2005, 44 (10) : 3547-3555.
  • 9Xiong Zhihua, Zhang Jie. Product quality trajectory tracking in batch processes using iterative learning control based on time-varying perturbation models. American Chemical Society, 2003, 42 (26): 6802-6814.
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