Abstract
Agricultural irrigation is a very important link in agricultural production, but in the current situation of water shortage, reasonable control of agricultural water supply can not only achieve the purpose of irrigation, but also save water resources to the maximum extent. Therefore, this paper studies the agricultural water supply control system and its related circuits. According to the actual situation of agricultural irrigation, based on the nine-point controller in logic control, a control system of agricultural water supply based on nine-point controller is designed, and also the corresponding control circuit. The control system is verified by experiments. The results show that the control system circuit can meet the operation requirements under extreme conditions and has high stability. The experimental results of the control system show that the whole control system is obviously superior to the traditional PID control system, while the actual application results show that the whole control system has a good response and can control the water supply system in real time according to the actual situation of agricultural irrigation.
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