Liquid fertilizer control method based on EDBKA-PID, soil testing and formulated fertilization system and method

By introducing the EDBKA-PID control method into the integrated water and fertilizer system, the PID parameters are optimized, and the time-varying, nonlinear and hysteresis problems of the system when regulating water and fertilizer resources are solved, and the precise regulation of liquid fertilizer flow and efficient utilization of water and fertilizer resources are achieved.

CN119689839APending Publication Date: 2025-03-25VODA AGRI TECH CO LTD +3
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Patent Information

Application Number
CN202411872375.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-18
Publication Date
2025-03-25

AI Technical Summary

Technical Problem

The existing integrated water and fertilizer system has time-varying, nonlinear and hysteresis problems in regulating water and fertilizer resources, resulting in low utilization of water and fertilizer resources. The traditional PID controller has shortcomings in parameter setting and control accuracy, making it difficult to meet higher accuracy requirements.

Method used

The liquid fertilizer flow control method based on EDBKA-PID is adopted, and the PID parameter combination is optimized, the algorithm convergence speed and accuracy are improved, and the liquid fertilizer flow is precisely regulated by introducing elite operators and differential evolution strategies.

Benefits of technology

High-precision regulation of liquid fertilizer flow is achieved, water and fertilizer resource utilization is improved, and the system's adaptability and control accuracy are enhanced.

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Abstract

The invention relates to a liquid fertilizer control method based on EDBKA-PID, and a soil testing and formulated fertilization system and method. The liquid fertilizer flow control method based on the EDBKA-PID comprises the following steps: S10, calculating the deviation between a target fertilization amount and an actual fertilization amount, and transmitting the deviation to a PID controller; s20, the PID controller carries out calculation according to the deviation, and an output signal is obtained; and S30, according to the output signal, the fertilizing device adjusts the flow rate of the liquid fertilizer in the fertilizer outlet pipeline through a frequency converter and an asynchronous motor, so that the accurate control of the flow rate of the liquid fertilizer is realized. According to the liquid fertilizer control method based on EDBKA-PID, and the soil testing and formulated fertilization system and method, the problems that fertigation depends on experience, and the liquid fertilizer flow regulation and control precision is not high in the prior art are solved.
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