连续可变量喷雾系统响应特性试验  

Experiment on Response Characteristics of Variable-rate Continuous Spraying System

作　　者：邱白晶[1] 李坤[1] 沈成杰[1] 徐溪超[1] 毛罕平[1] 

机构地区：[1]江苏大学现代农业装备与技术省部共建教育部重点实验室,镇江212013

出　　处：《农业机械学报》2010年第9期32-35,79,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家"863"高技术研究发展计划资助项目(2008AA100905;2006AA10A305-3;2008AA100901);国家自然科学基金资助项目(30571240)

摘　　要：构建了以电动调节阀为变流器件的变量喷雾系统,并采用试验方法得出了系统的阶跃响应特性,试验结果表明:在阶跃幅值ΔQ分别为0.4、1.4、3.4、3.9、4.4 L/min条件下,系统上升时间的最大值为1s,表明系统响应速度与现有的调压变量喷雾系统相当;系统上升时间、峰值时间和超调量都有幅值相关性,说明系统是非线性系统。因此对此类调流变量喷雾系统,其控制设计必须考虑非线性问题。In order to develop a new type of precision spraying equipment,a set of variable-rate spray system based on electric control valve device as a converter was developed,and the step response characteristics of the system were studied by using experimental methods.The result shows that the maximum rise time is 1 s in the condition of step amplitude ΔQ=0.4,1.4,3.4,3.9,4.4 L/min,which is comparable with variable-rate spray system controlled by changing flow press; the rise time,peak time and overshoot show correlation with the amplitude,which indicates that the system belongs to nonlinear system.So the control design of this type of variable-rate continuous spray system must take nonlinear problems into account.

关 键 词：喷雾 变量技术 响应特性 非线性 试验 

分 类 号：S49[农业科学—植物保护]