Research on the stroke control algorithm of agricultural push rod motor

This paper studies and realizes a low-cost stroke control algorithm for agricultural push rod motor. The algorithm is based on the hall counting principle. By adding two hall sensors to the ordinary agricultural push rod motor, the motor can output two square wave signals when it is running. When the motor is running, each revolution will trigger a hall sensor to output a pulse signal. The two signals have a phase difference of 90 degrees. Through the phase relationship of the two signals, the forward and reverse state of the motor can be judged, and the pulse signal can be counted by adding or subtracting. The algorithm realizes the automatic control of motor stroke according to the user set stroke percentage, hall count value and total stroke hall count value. This algorithm has the advantages of stable and reliable stroke control, low cost, suitable for high humidity and dusty environment in agriculture, and can be applied to the on-site automatic control of related equipment in facility agriculture and field agriculture, as well as remote precision control based on Agricultural Internet of things.