摘要
大量仿真实例以及实际应用表明,二型模糊控制器的控制效果要优于PID、一型模糊控制器。虽然基于KM降阶算法并不能得到区间二型模糊控制器的解析解,但在特定的条件下,仍然可以得到一种非线性的区间二型模糊控制器的数学表达式。一旦二型模糊逻辑系统的结构确定下来,那么区间二型模糊控制器的形式也随之确定。水泥厂生料立磨粉磨系统具有非线性、大滞后、时变特性,传统的控制器难以得到理想的控制效果。提出了一种变参数二型模糊控制器设计算法,该控制器的参数在控制器作用过程中可变,因此该控制器的表达式可根据系统的响应做出合适的修改。通过对某水泥厂生料立磨压差控制的仿真结果表明,控制器能够在保证系统响应时间的基础上,降低系统超调,保持系统的稳定性。
A large number of simulation examples and practical applications show that type 2 fuzzy controller outperforms PID and type 1 fuzzy controller.Although the analytic solution of interval type 2 fuzzy controller can’t be obtained by KM reduction algorithm,but under certain conditions,a mathematical expression of nonlinear interval type 2 fuzzy controller can still be got.Once the structure of type 2 fuzzy logic system is determined,the expression of interval type 2 fuzzy controller is also confirmed.The vertical roll mill grinding has the problems of nonlinearity,large time delay,and slow time-varying,and it is difficult for traditional controller to get ideal control effect.In this paper,type 2 fuzzy controller with variable parameter design algorithm was proposed,the parameter of which can be changed during the process of controller’s operation.Therefore,the expression of type 2 fuzzy controller proposed in this paper can be modified appropriately according to the system response.The simulation results of differential pressure in vertical roller mill for cement-raw grinding show that,the methods can reduce system overshoot,ensure response time and maintain system stability.
作者
黄堃
郑涛
杨文
HUANG Kun;ZHENG Tao;YANG Wen(NARI Technology Co.,Ltd.,Jiangsu Nanjing 211106,China;NARI Group Corporation,Jiangsu Nanjing 211106,China)
出处
《当代化工》
CAS
2020年第4期711-715,共5页
Contemporary Chemical Industry
基金
国家重点研发计划,项目号:2016YFB0601501-1
南瑞集团有限公司科技项目,项目号:524608170069
关键词
立磨压差
二型模糊集合
二型模糊控制器
二型模糊逻辑系统
KM降阶
Vertical roller mills differential pressure
Type 2 fuzzy set
Type 2 fuzzy controller
Type 2 fuzzy logic system
KM type reduction
