摘要
介绍了甘蔗种植机结构特征、控制系统方案、拖拉机及排种器驱动马达速度的检测方法、利用负反馈实现拖拉机行走速度与下种速度同步的方法。根据甘蔗单芽段种植机结构特征,设计一种基于西门子PLC控制的速度同步负反馈控制系统。该系统经过田间试验和数据统计,在拖拉机行走速度变化时,种植机能及时地调整排种器驱动马达转速,且在较短时间内达到理论计算转速,能有效实现单芽段种植机在不同种植农艺下拖拉机行走速度与下种速度的同步变化,保证甘蔗种植密度均匀。
This paper introduces the mechanical structure characteristics of single bud sugarcane planter,the control system scheme,the speed detection method of hydraulic motor and tractor,and the method of synchronizing the traveling speed of tractor with the seed bud following speed by using negative feedback.According to the mechanical structure characteristics of single bud sugarcane planter,in this paper,a speed synchronous negative feedback control system based on Siemens PLC is designed.The field experiments showed that when the tractor’s traveling speed changes,the planter can adjust the speed of the hydraulic driving motor of the seed bud delivering device in time,and the speed can achieve the theoretical calculation one in a relatively short time.It can realize the synchronous change of the planting speed while the tractor’s traveling speed changed under different planting agronomy to ensure the evenness of planting density.
作者
章霞东
曾伯胜
莫建霖
刘庆庭
Zhang Xiadong;Zeng Bosheng;Mo Jianling;Liu Qingting(Guangxi Agricultural Machinery Research Institute Co.,Ltd.,Nanning 530007,China;South China Agricultural University,Guangzhou 510642,China)
出处
《现代农业装备》
2019年第6期14-22,共9页
Modern Agricultural Equipment
基金
广西重点研发计划项目(桂科AB16380192)
广西科技创新重大专项(桂科AA17202005)
国家糖料产业技术体系——甘蔗收获机械化(CARS-180403)
关键词
甘蔗种植机
单芽段
PLC控制
智能匀播
负反馈
sugarcane planter
single bud billet cane
PLC control
intelligent even sowing
negative feedback control
