摘要
针对混炼造粒机机筒工作过程中温度控制存在大滞后、时变性和非线性等典型特性,从传热学的角度分析了机筒的传热过程,理论解释了机筒热场分布的基本规律,确定了机筒温度滞后、非线性变化的主要原因。基于变论域思想,提出了一种基于变论域模糊PID的机筒温度控制策略,设计了基于函数定制的伸缩因子控制器,实现了实时动态调整控制器的量化因子和比例因子。在Simulink仿真环境中,分别搭建了基于常规PID、模糊PID和变论域模糊PID的机筒温度控制系统。仿真结果表明,对于大滞后、非线性系统,所提出的变论域模糊PID控制策略相对于常规PID和模糊PID具有更优的动静态特性和自适应能力。
Aiming at the typical characteristics of temperature control system of mixing granulator barrel, such as large lag, time-variation and nonlinearity, the heat transfer process of the barrel was analyzed from the point of view of heat transfer. The basic law of the distribution of the heat field in the barrel was explained theoretically, and the main reasons for large lag and nonlinear change of the barrel temperature were determined. A variable universe fuzzy PID barrel temperature control strategy was proposed based on the idea of variable universe. The quantitative factor and proportional factor of the controller were dynamically adjusted by designing an expandable and shrinkable factor controller based on the function customization. In the simulink simulation environment, the barrel temperature control system based on conventional PID, fuzzy PID and variable universe fuzzy PID were constructed respectively. The simulation results showed that the variable universe fuzzy PID had better dynamic and static characteristics and adaptive ability than the conventional PID and fuzzy PID for large lag and nonlinear systems.
出处
《塑料》
CAS
CSCD
北大核心
2018年第1期122-125,130,共5页
Plastics
基金
辽宁省科技创新重大专项(2015106006)
关键词
混炼造粒机
大滞后
变论域模糊PID
非线性
机筒
mixing granulator
large lag
variable universe fuzzy PID
nonlinearity
barrel
作者简介
马跃（1960-），男，副教授，硕士。;通信作者：刘海波（1983-），男，副教授，博士，主要从事测量一加工一体化、数字化测量、数控技术研究。E-mail：hbliu@dlut．edu.cn。
