【摘要】 采用GPS定位和雷达测速技术,构建了一套变量喷雾装置,并开发设计出其相应的软件控制系统。在试验研究过程中,通过实时监测喷雾参数来描述喷雾过程的动态特性,以此测定该变量喷雾控制系统的响应能力,并为喷雾处方图与变量喷雾装置的精度匹配提供可靠依据。试验结果表明,变量喷雾装置的定量喷雾误差控制在4.65%以内前提之下,响应延时会影响到变量喷雾作业的均匀性,选择合适的行进速度以及设置一定的预留时间能在一定程度上减少这种影响。更多还原

【Abstract】 A variable-rate spraying equipment was designed based on the GPS orientating technology and radar velocity measuring technology,and its control system software was developed.During the experiment,the spray dynamic capability was described by monitoring the spray parameters.This way can be used to measure the response capability of the equipment and can provide a reliable basis for the matching precision between spraying prescription and equipment.The experimental results showed that the spray uniformity was affected by the response lag when the flow error at constant application rates could be controlled within 4.65%.Selecting the proper speed and setting aside some time in advance could reduce the effect to a certain degree.更多还原