【作者】 李全善； 曹柳林； 潘立登； 林晓琳； 崔佳；

【Author】 LI Quan-shan~(1,2),CAO Liu-lin~1,PAN Li-deng~1,LIN Xiao-lin~2,CUI Jia~2 (1.Institute of Automation,Beijing University of Chemical Technology,Beijing 100029,China; 2.Beijing Century Robust Technology Co.,Ltd.,Beijing 100020,China)

【机构】 北京化工大学 信息科学与技术学院； 北京世纪隆博科技有限责任公司；

【摘要】 基于装置的运行操作数据,在线自动获取一定运行时期的PID回路动态响应,以闭环辨识的方法建立过程传递函数的多模型。通过给定ε-不敏感损失函数、模型可信度函数,基于获取的多模型,建立多模型结构的内部模型控制器,以随机数搜索的优化算法获取内部模型控制器参数,使之针对所有模型都具有良好的控制效果。新方法无需进行现场测试,在装置正常生产条件下自动循环完成模型辨识与参数整定。实际的工程应用证明了方法的有效性。更多还原

【Abstract】 Based on the operating data of process,the dynamic response of PID loop is obtained automatically.Through giving the insensitive loss function and model reliability function,the multiple models of the control loop are achieved.These multiple models which represent as process transfer function are obtained by the closed-loop identification method.Based on the acquired multiple models,the internal model controller with multi-model structure is built.The internal model controller,which has a perfect effect for all the models,is obtained by optimal stochastic algorithm.Without field testing,the new method can complete the model identification and parameter tuning circularly under the normal production conditions of petrochemical plants.The practical engineering application proves that the method is effective.更多还原