摘要
变量喷雾控制系统具有非线性、时变性、大滞后等特点,常规PID控制不能满足变量喷雾控制系统在实际作业中理想的控制效果。因此提出了一种基于PLC控制的模糊自整定PID控制方法。PLC控制的模糊自整定PID控制结合了PLC控制灵活、多变和自适应模糊控制等特点,通过对变量喷雾控制系统的数学建模,建立了以电动PI调节阀为核心的模糊自整定PID控制系统。利用Matlab/Simulink和模糊逻辑工具箱对普通模糊PID控制系统和基于PLC控制的模糊自整定PID控制系统进行Simulink仿真研究。实验结果表明,基于PLC控制的模糊自整定PID控制比常规PID控制在非线性、时变性、减小超调量的方面具有更好的控制品质。
Variable spray control system has nonlinear, time-varying, big lag, etc. Conventional PID control can't satisfy the variable spray control system in the actual operation of the ideal control effect, so as to put forward a fuzzy self-tuning PID control based on PLC control method. PLC control of the fuzzy self-tuning PID control combined with PLC control flexible, changeable and adaptive fuzzy control, etc. through the mathematical modeling of variable spray control system, set up electric PI regulator for the core of the fuzzy self-tuning PID control system. Using Matlab/Simulink and fuzzy logic toolbox to general fuzzy PID control system and fuzzy self-tuning PID control based on PLC control system with Simulink simulation. The experimental results showed that fuzzy self-tuning PID control based on PLC control had the better quality than the conventional PID control in the nonlinear, time-varying and the reduce of the overshoot amount.
出处
《山东农业大学学报（自然科学版）》
CSCD
北大核心
2014年第4期536-540,共5页
Journal of Shandong Agricultural University：Natural Science Edition
基金
重庆市应用开发计划项目(cstc2014yykfA80012)
