移栽机送盘装置与定位控制系统研究

Research on Disk Conveying Device and Positioning Control System for Transplanter

针对全自动移栽机的钵苗盘自动送盘和精确定位问题,研制了一种移栽机钵苗盘驱动装置和定位控制系统。该装置利用压缩空气作为动力,采用气液阻尼缸驱动苗盘的移动,由接近开关对苗盘定位,旋转编码器计量苗盘的移动距离,PLC为控制核心,触摸屏作为人机界面,可根据需要随时调整苗盘的移动速度和距离。试验结果表明,通过设定补偿值,该系统能够消除气缸响应滞后以及机械加工误差等因素造成的影响,其定位控制误差小于1 mm,能够满足全自动高速移栽机的使用要求。

A kind of transplanting seedling disc conveying device and positioning control system were developed for automatic disk conveying and accurate position of pot seedling transplanter.The moving speed and distance of seedling disc could be adjusted according to the disc size,which was driven by gasliquid damping cylinder.The PLC was used as control core and the touch screen was used as humanmachine interface.Experimental results showed that the influence caused by the cylinder response lag and machining error could be eliminated by setting the compensation value.The positioning control error was less than 1 mm,which met requirements of high-speed automatic transplanting machine.