Abstract
According to the operator experiences, the variable rate fertilization system based on the fuzzy self-tuning PID controller is researched in this paper, which is driven by electrically and hydraulic system. This system solves the problem that the parameters adjustment of the traditional PID is difficult. The system model is presented and is simulated by using MATLAB/ SIMULINK toolbox. The simulation results shows that the fuzzy self-tuning PID control could obtain better dynamic response and achieve the expected control effects. In order to verify this control system performance, many experiments are carried on in the lab. The experiments results show that the variable rate fertilization system based on fuzzy self-tuning PID control has high control accuracy and could meet the control requirements of the variable rate fertilization in precision agriculture.
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