Simulation and Analysis Study on Magnetic Force of Precision Seed Sowing Device Based on Maxwell

摘要

The operating principle of magnetic precision seed sowing device was introduced in this paper. The magnetic sucker is a key part of the seeder. The simulation model of sucker was established with two-dimension finite element method and its magetostatic field was analyzed by using Maxwell2D software. The distribution regularities of the sucker end magnetic intensity were researched under the conditions of given magnetization. The sucker end sowing space was divided into corresponding nodes by using appropriate step size and the axial and radial component of node magnetic intensity was calculated. The axial and radial component of specific magnetic force which seed stressed in magnetic field was calculated. The study results show that the sucker end magnetic intensity increases with increased the magnetization current strength, the magnetic intensity of sucker end fringe is more powerful than other areas; the specific magnetic force increases with increased the magnetization current strength and the amplitude of variation is dramatic; the specific magnetic force concentrates on the axial direction. These study results are valuable for the optimum design of such seeder.