High-speed precision seed metering device through kinetic-energy-type rotating and throwing and seed metering control method thereof

A seed metering device through rotating and throwing, comprising a seed feeding mechanism, a throwing motor and a seed spoon;

• the seed feeding mechanism feeds seeds to a picking point, the throwing motor has an output shaft vertically connected and fixed with a tail of the seed spoon and is configured to drive the seed spoon to circularly rotate, and a head of the seed spoon fetches seeds at the picking point;
• a minimum angular speed of the seed spoon during each period is greater than zero and each period is divided into an acceleration section and a deceleration section;
• after fetching seeds, the seed spoon is accelerated by the throwing motor to provide initial kinetic energy for the seeds;
• after rotating to a throwing point, the seed spoon is decelerated by the throwing motor to throw the seeds out, and a throwing speed and a throwing angle of the seeds are controlled by adjusting a position of the throwing point and a rotational speed of the seed spoon at the throwing point.