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Spatial distribution visualization of PWM continuous variable-rate spray

International Journal of Agricultural and Biological Engineering 2013年第4期6卷 1-8页

作者： Deng Wei Yanbo Huang Zhao Chunjiang Wang Xiu Liu Jinlong Beijing Research Center of Intelligent Equipment for Agriculture Beijing Academy of Agriculture and forestry ScienceBeijing 100097China United States Department of Agriculture Agricultural Research ServiceCrop Production Systems Research UnitStonevilleMississippiUSA Baoding Radio and TV University Baoding 071000China

Pesticide application is a dynamic spatial distribution process,in which spray liquid should be able to cover the targets with desired thickness and ***,it is important to study the 2-D and 3-D(dimensional)spray distribution to evaluate spraying *** curve-surface generation methods in Excel were used to establish 1-D,2-D,and 3-D graphics of variable-rate spray distribution in order to characterize the space distribution of the variable-rate *** 1-D,2-D,and 3-D distribution graphs of Pulse-Width Modulation(PWM)-based continuous variable-rate spray were developed to provide a tool to analyze the distribution characteristics of the *** 1-D graph showed that the spray distribution concentrated toward the center of the spray field with the decreased *** 2-D graph showed that the spray distribution always spread as the shape of Normal Probability distribution with the change of the *** 3-D graph showed that the spray distribution tended to be uniform when the sprayer travelled forward at the appropriate *** study indicated that the visualization method could be directly used for analysis and comparison of different variable-rate spray distributions from different experimental conditions and measuring methods.

关键词： spray distribution pulse width modulation(PWM) variable-rate spray distribution visualization

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