基于Matlab温室模糊控制的自动施肥策略研究

Research on Automatic Fertilization Strategy Based on Matlab Greenhouse Fuzzy Control

随着人工智能和物联网技术的进步,我国温室农业逐渐向精准自动化农业发展。本文针对温室作物生长所需的水和养分作为控制对象,设计了一套利用PLC和上位机控制的温室自动灌溉施肥装置,以施肥回路中电导率值作为控制目标,由于系统的延迟和惯性大等特点,无法建立起电导率和电磁阀开通时间之间的函数关系,特采用模糊控制策略。利用Matlab中模糊控制器建立输入输出模糊控制规则,计算出电导率模糊控制表,并在simlink中建立仿真模型图,仿真结果显示控制有效平稳。

With the development of artificial intelligence and technology.Chinese greenhouse agriculture is gradually developing towards precision and automated agriculture.This paper takes the water and nutrients needed for the growth of greenhouse crops as the control object,and designs a set of greenhouse automatic irrigation and fertilization system controlled by PLC and host computer.Taking the conductivity value in the fertilizing loop as the control target,due to the characteristics of the system's delay and large inertia,the functional relationship between the conductivity and the opening time of the solenoid valve cannot be established,so fuzzy control is adopted.Use fuzzy controller in Matlab to establish input and output fuzzy control rules,calculate conductivity fuzzy control table,and establish a simulation model diagram in simlink.The simulation results show that the control is effective and stable.