Kaiqun Hu 1 , Lijun Qi 1 , Ronghua Ji 2, Jilin Song 1 , Zetian Fu 1 1 College of Engineering, China Agriculture University, Beijing, P. R. China
In order to complete the automatic and real-time spray volume transform of multiple nozzle body, virtual instrument was applied in the variable rate spray control, and a real-time transform system of spray volume based on LabVIEW was developed. In this paper, modeling and Matlab simulation of the actuator were done to measure the execution time of the actuator. According to experiments, the performance of the system was evaluated, and the time delay of the system to complete a spray volume transform was detected. Results indicated that the actuator needed only 0.03s to reach the 2% of the stable value, and the time delay was about 0.48s. This time delay of volume transform met the real-time spray rate variation and control precision requirements of the variable rate spray system.
Real-time transform system of spray volume, multiple nozzle body, actuator, LabVIEW
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