Study of variable liquid fertilization control system based on fuzzy PID control

According to the flow characteristics of variable liquid fertilizer control system, the fuzzy PID control method to control the flow of liquid fertilizer, and the fuzzy PID control process is simulated by use of MATLAB Simulink and Fuzzy tools. The simulation results show that: compared with the conventional PID control, fuzzy PID control algorithm to reduce the system overshoot, shorten the time adjustment, enhance the anti-jamming, the fertilizer amount is maintained more effectively in a given range, show the superiority of the fuzzy PID.