Diseño y evaluación de un dispositivo de dosificación de semillas de precisión centrífuga de alta velocidad para soja basado en simulación DEM

A high-speed centrifugal precision seed metering device for soybeans was developed to improve single-seed sowing accuracy under high-speed operation. The device integrates an involute deflector strip and ellipsoidal seed grooves, driven by a stepper motor to control the centrifugal disc and seed-metering wheel. Using EDEM software, a simulation model was established. A quadratic orthogonal design was applied with deflector type, disc speed, and seed-metering wheel speed as factors, and qualified seeding rate and miss rate as indicators. The optimal combination—disc speed of 49.01 r/min and wheel speed of 593.75 r/min—achieved a 92.08% seeding qualification rate and 1.91% miss rate. Bench tests confirmed strong agreement with simulation results, verifying the system’s reliability. This study offers a theoretical and practical reference for the development of high-speed precision metering devices for soybean planting.