变喷杆式喷雾机可变喷量施药控制系统研究

发布时间：2018-01-08 13:32

本文关键词：变喷杆式喷雾机可变喷量施药控制系统研究　出处：《南京林业大学》2016年硕士论文　论文类型：学位论文

【摘要】：农药喷洒一直以来都是农业进行病虫害防治的有效手段,在我国,由于施药技术的落后,农药利用率远低于国外发达国家,这不仅造成了农药的极大浪费,还对自然生态环境产生了诸多不良的影响。为改变这一现状,变量施药技术的研究被提上日程,其研究目标是能够根据不同作物不同生长阶段的具体病虫害状况,实现按需施药,以提高农药的使用效率,减少对环境造成的污染,推动我国农业的良性发展。课题结合江苏科技支撑计划“喷杆变换技术及其多功能农药对靶喷雾机研制(BE2012383)”以及江苏省农机三新工程项“多功能变喷杆智能喷雾机研制NJ2014-11”,对多功能变喷杆喷雾机及其变喷量施药控制系统进行了研究,完成了以下工作:(1)完成了多功能变喷杆喷雾机智能控制系统的研发,实现了该机具的工作形态和高度的控制与调节,且设计了精确对靶施药控制电路,并对整个系统进行了试验验证,为在该机具上研发智能变量供药系统及控制系统提供了基础。(2)在分析变喷杆喷雾机变量施药控制系统整体设计思路的基础上,研究确定了供药系统方案,并通过分析比较,确定了其控制系统算法。(3)设计了变喷杆喷雾机变量施药的供药系统,并根据该机具变量施药的具体要求分析确定了供药系统中各主要液压元器件及检测装置的型号。(4)根据变喷杆喷雾机变量施药的控制要求,在对关键电路进行了详细分析的基础上,设计了变量施药系统的控制电路板;阐述了控制软件的设计编写思路,并按照该思路进行了控制程序的设计。(5)搭建了变喷杆喷雾机变量施药系统试验平台,获取了相关经验数据,利用BP神经网络算法对数据进行了拟合,最后通过BP神经网络预测结果与试验数据的对比,验证了该算法在变喷杆喷雾机变量施药控制系统中的可行性。
[Abstract]:Pesticide spraying has always been an effective means of agricultural pest control in China, because of the backward application technology, pesticide utilization rate is far lower than developed countries, which not only caused a great waste of pesticides. In order to change this situation, the study of variable pesticide application technology has been put on the agenda. The aim of this study is to improve the efficiency of pesticide use and reduce the environmental pollution according to the specific pest and disease status of different crops at different growth stages. To promote the benign development of agriculture in China. The subject combines with Jiangsu science and technology support plan "the technology of injection pole shift and the development of multi-function pesticide target sprayer" (BE2012383). "and Jiangsu province agricultural machinery three new project" multi-function variable injection rod intelligent sprayer development NJ2014-11 "." The multi-function variable injection rod sprayer and its variable injection amount spraying control system were studied. The following work was completed: 1) the intelligent control system of the multi-function variable injection rod sprayer was developed. The control and adjustment of the working form and height of the machine are realized, and the precise control circuit of target application is designed, and the whole system is tested and verified. This paper provides a basis for the research and development of intelligent variable feed system and control system on this machine. On the basis of analyzing the overall design idea of variable spraying control system of variable injection rod sprayer, the scheme of the feeding system is studied and determined. Through the analysis and comparison, the control system algorithm is determined. (3) the variable spraying system of variable injection rod sprayer is designed. And according to the specific requirements of variable application of the machine, the main hydraulic components and the type of the testing device in the feeding system are determined according to the variable application requirements of the variable spraying machine. Based on the detailed analysis of the key circuits, the control circuit board of the variable spraying system is designed. The design idea of the control software is expounded, and the control program is designed according to this idea. The test platform of variable spraying system of variable injection bar sprayer is built, and the relevant experience data are obtained. The BP neural network algorithm is used to fit the data. Finally, the feasibility of the algorithm in variable application control system of variable sprayer is verified by comparing the prediction results of BP neural network with the experimental data.
【学位授予单位】：南京林业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：S49;TP273

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