A minimum error variable pesticide application control method and system

Abstract

The minimum error variable pesticide application control method and system provided by the present invention include: obtaining the transfer function of the variable variable pesticide application control system; generating a flow rate control unit step response sequence according to the transfer function; according to the flow rate control unit step response sequence and the expected pesticide application Based on the open-loop error sequence, the cumulative application error function of the system is constructed based on the open-loop error sequence; the PID parameters of the variable application control system are optimized by using the reinforcement learning method, so that The function value of the cumulative spraying error function is the smallest; according to the PID parameters, the PID regulation control of the spraying process is completed. The minimum error variable spraying control method and system provided by the embodiments of the present invention optimize the PID parameters of the variable spraying control system by citing the reinforcement learning method, effectively reducing the error caused by the automatic spraying process of the drone when spraying. The error of spraying flow rate improves the uniformity of pesticide application on the ground during automatic spraying operations.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of agricultural informatization, and in particular to a method and system for controlling pesticide application with minimum error variable. Background technique [0002] In recent years, with the gradual improvement of mechanization and supporting planting technology, the development of agricultural machinery has provided great convenience for agricultural modernization. Among them, UAV-based operation tools provide efficient and convenient operation methods for agricultural modernization. [0003] Aerial spraying operations are an important means of modern agricultural plant protection operations. In the field of aerial pesticide application operations, precise pesticide application by drones is the future technological development trend. At present, small diaphragm pumps and pressure nozzles are usually installed on the spraying drone. According to the conditions of the crops, t...

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Problems solved by technology

[0005] The embodiment of the present invention provides a minimum error variable pesticide application control method and system to overcome the shortcomings of the prior art in the control of drone spraying, such as slow control speed and large spraying amount error at the moment of entering the field.

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