Design and simulation of a control system for a center pivot irrigation device

Abstract

In the agricultural projects that use the center pivot irrigation system, which depends on the groundwater wells as a source of water using turbine pumps, which are actuated by internal combustion engines, the suspension of the center pivot irrigationdevice on the movement when a malfunction occurs with its continuous flow of water is a big problem and waste water, fuel and time, It also damages some crops that are heavily affected by water,this research studies the design of an automatic clutch system instead of the manual clutch that used to actuate center pivot irrigation pumps, two circuits were designed the first circuit is a hydraulic circuit connected with the hand leaver of clutch and the second circuit is to control of the speed of internal combustion engine and hydraulic circuit, when a malfunction occurs in center pivot irrigation device, the control circuit received a signal from safety circuit and transmitted signal to reduce a speed of internal combustion engine and actuate a hydraulic circuit to unengaged a water pump and then shut down the internal combustion engine and there for ensuring from safety of cultivated crops and not wasting water, time and fuel.