Zero-speed seed throwing system of potato seeder

The invention discloses a zero-speed seed throwing system of a potato seeder, and belongs to the technical field of agricultural machinery. The system is composed of a power unit, a seed carrying device and a control module. The power unit is composed of a stepping motor, a direct-current stabilized power supply and a stepping motor driver. The seed carrying device consists of a suspension bracket, a conveying belt, a seed protecting plate, a transmission shaft, an insert bearing and a roller; the control module is composed of a speed measurement sensor and a controller. The seed carrying device is mounted below a seed metering device of the potato seeder through a suspension bracket; the controller is mounted outside a side plate of a seed guide groove of the seed-metering device; and the stepping motor is mounted above the right suspension bracket. In an operation state, the controller adaptively controls the stepping motor in real time to drive the transmission belt to obtain a linear speed equal to the ad