Application of Sampling Technology to Motor Stroke Control in Facility Agriculture
At present,the facility agricultural motor is mainly based on DC 24V motor,which is mainly used for film rolling and window opening to realize the needs of crop ventilation and cooling.Its stroke control mainly relies on the limit switch of the fuselage,which can only realize the basic opening and closing,and the start and stop of the stroke need to be completed manually.There are also some technologies and products that can achieve automated travel control in the market,but the interface is not unified,and the upgrade and maintenance are difficult and costly.In this paper,an open-loop stroke control method of DC motor based on sampling technology is presented.The precise stroke control can be achieved without any change to the DC motor.The experimental results show that the single movement error can be controlled within 1%of the total travel.
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