基于FPGA的模糊自整定PID湿度控制器的设计

摘要

This design uses a method of top-down based on Verilog HDL and schematic modular hybrid design. Using the in?cremental PID control algorithm and fuzzy control theory to realize the humidity control system in the FPGA. Using the theory of fuzzy control to self-tuning PID control parameters can well solve the large delay,time-varying,nonlinear controller of humidi?ty. According to the look-up table structure inside of the FPGA has,the design method of joint offline calculation using MATLAB software and online look-up table can conveniently and efficiently to solve the fuzzy inference and defuzzification of fuzzy control in the most difficult to achieve.%该设计使用自顶向下基于Verilog HDL和原理图分模块混合设计.利用增量式PID控制算法,结合模糊控制理论在FPGA内实现湿度控制系统.运用模糊控制理论进行自整定PID控制参数能很好地解决大滞后、时变、非线性的湿度控制.根据FPGA内部具有的查找表结构,采用联合Matlab的离线计算在线查表设计的方法能高效、方便、快捷地解决模糊控制中最难于实现的模糊推理和解模糊化.