摘要
介绍采用离线计算、在线查表插值的方法实现通用模糊控制器在PLC上实现的设计方法。提出增量式/位置式模糊控制输出算法、带死区的模糊控制算法以及二元三点插值法来改善通用模糊控制器的性能,通过控制表和在线部分直接下载到PLC的CPU模块中的方法,来满足通用性的要求。这种PLC通用模糊控制器可作为控制系统的一部分,也可用于控制过程分析、仿真和开发模糊控制系统的工具。
This paper gives an account of the design of a PLCbased universal fuzzy controller,which achieves the control function via the method of offline inference and online interpolation bottoming on a lookup table.The fuzzy controller uses the algorithm of increment/position and dead zone fuzzy control output as well as the method of dualistic threepoint interpolation.All of this can improve its performance greatly.The lookup table and the online part are directly loaded into the CPU module so as to meet universal demands.This fuzzy controller can be used as one part of the industrial process control system or as a kind of valuable associated software for analysing and simulating control systems.
出处
《工业仪表与自动化装置》
2003年第4期23-25,51,共4页
Industrial Instrumentation & Automation
关键词
通用模糊控制器
PLC
离线计算
在线查表插值
控制系统
Fuzzy control
PLC
Off-line inference
On-line interpolation bottoming on a look-up table
