基于分数阶PID的间歇蒸煮过程内模控制  

Fractional Order Internal Model PID Control for Pulp Batch Cooking Process

作　　者：单文娟 程晓云 汤伟[2] Shan Wenjuan;Cheng Xiaoyun;Tang Wei(Faculty of Science,Xi’an Aeronautical University,Xi’an 710077,China;School of Electrical and Control Engineering,Shaanxi University of Science&Technology,Xi’an 710021,China)

机构地区：[1]西安航空学院理学院,西安710077 [2]陕西科技大学电气与控制工程学院,西安710021

出　　处：《中华纸业》2022年第8期15-21,共7页China Pulp & Paper Industry

摘　　要：由于间歇蒸煮过程存在数学模型难以确定、系统参数不能精确的问题,本文在机理分析的基础上,通过对模型中非线性部分进行阶次数值逼近及函数拟合,建立了带延迟环节的分数阶模型。对于间歇蒸煮过程的分数阶模型构建控制器,结合内模控制原理简化分数阶PID控制器的设计,利用最大灵敏度整定控制器参数,并以此获得强鲁棒性控制系统。仿真结果验证了所提出的分数阶内模控制方案的有效性,具有比整数阶内模控制方案更好的控制性能。Based on the mechanism analysis of batch cooking process,a fractional order model with delay by nonlinear functi on fitting and numerical approximation was proposed,and thus a fractional internal model PID controller was designed for the process.It solved the problem of model imprecise and system parameters uncertainties in system control.The maximum sensitivity and stability margin were used for parameters’ tuning of the fractional order controller.So that the good robust performance can be achieved under good dynamic response.Simulation results show that the fractional order model control in batch cooking process is superior to the integer order control in overshoot,response speed and robustness.

关 键 词：间歇蒸煮过程 分数阶PID 内模控制 最大灵敏度 

分 类 号：TS736[轻工技术与工程—制浆造纸工程] TS743