模糊PID在卫生纸机烘缸进出口差压控制中的应用  

Application of Fuzzy PID in Differential Pressure Control of Dryer Inlet and Outlet of Tissue Paper Machine

作　　者：汤伟[1] 孙小乐 佘都 杨润珊 袁志敏[1] TANGWeS;SUNXiao- le;SHE Du;YANG Run-slian;YUAN Zhi-min(College of Electrical and Information Engineering, Shaanxi University of Science ＆ Technology, X i’a n, Shaanxi Province, 110021;College Mechanical and Electrical Engineering, Shaanxi University Science ＆ Technology, Xi＇an, Shaanxi Province)

机构地区：[1]陕西科技大学电气与信息工程学院,陕西西安710021 [2]陕西科技大学机电工程学院,陕西西安710021

出　　处：《中国造纸》2017年第11期50-56,共7页China Pulp & Paper

基　　金：陕西省重点科技创新团队计划项目(2014KCT-15);陕西省科技统筹创新工程计划项目(2016KTCQ01-35)

摘　　要：烘缸进出口差压是表征烘缸是否积水的一个重要参数,通常处于波动状态。在实际控制中的通常做法是利用PID控制算法将其控制于一个具体的数值,但由于烘缸排水的非均匀性,导致上述控制目的难以达到。因此,本课题提出一种利用"模糊"思想来控制卫生纸机扬克烘缸进出口差压的新方法,将烘缸进出口差压分成五个区段进行模糊化,再利用模糊控制算法来调整PID控制器参数,控制扬克烘缸进汽热泵的开度,从而达到控制烘缸进出口差压的目的,使得烘缸进出口差压稳定在一个合适的范围内。通过仿真及应用表明,系统中热泵开度变化平稳,烘缸进出口差压被控制在许可范围内,烘缸能保持长期不积水状态。The differential pressure of dryer inlet and outlet which isusually in a fluctuating state,is an important parameter indicating wheth-er the dryer has accumulated water,Generally, the control strategy is use PID control algorithm to keep it in a specific vadrainage of the dryer results the differential pressure of dryer inlet and outlet in a normal fluctuation state,so the control purpose is difficult to achieve. In this paper,a new method to control the differential pressure of dryer inlet and outlet was proposed,in which “ fuzzy” theory was applied to divide the differential pressure into five ranges and to adjust PIDcontroller parameters for the Yanke dryer,keeping the differential pressure of dryer inlet and outlet in a suitable range. Simulation and application showed that theheat pump opening changed smoothly,the differential pressure of dryer inlet and outlet was controlled within a certain range that ensured thedryer could maintain a state.

关 键 词：模糊PID 可调热泵 烘缸进出口差压 

分 类 号：TS734[轻工技术与工程—制浆造纸工程]