基于变频器的种子包衣机电气控制系统研究

Research on Electric Control System of Seed Coating Machine Based on Frequency Converter

种子包衣是一项种子加工技术,有利于提高种子质量,以促进增产。种子包衣机的作业效率高,污染较小,是当前普遍采用的包衣方式。我国的种子包衣机自动化程度不高,包衣质量较低,作业效果与现代化农业的要求存在差距,要改善种子包衣机的整体性能,控制系统的升级是关键。为此,设计了基于变频器的种子包衣机电气控制系统,将变频器与PLC结合,对包衣过程中的物料供给、混合和输送环节进行精确控制。测试结果表明:安装该系统的种子包衣机生产率与设定值极为接近,能够精确控制生产效率,可获得理想的包衣质量。

Seed coating is a seed processing technology,which is conducive to improving seed quality and promoting yield increase. The seed coating machine has high work efficiency and low pollution,and is currently a commonly used coating method. China’s seed coating machine is not highly automated,the coating quality is low,and there is a gap between the operation effect and the requirements of modern agriculture. To improve the overall performance of the seed coater,the upgrade of the control system is key. In this paper,the electric control system of seed coating machine based on frequency converter is designed. The frequency converter is combined with PLC to accurately control the material supply,mixing and conveying in the coating process. The test results show that the seed coater installed in the system has a productivity close to the set value,which can precisely control the production efficiency and obtain the desired coating quality. Therefore,the electrical system can accurately control the motor through the frequency converter,which can improve the working efficiency and quality of the seed coating machine.