摘要
针对温室微喷系统控制算法不稳定、适应能力差等问题,利用模糊规则设计了一种平滑切换控制算法;利用阶跃建模方法搭建微喷量与空气湿度的数学模型,简化了温室空气湿度模型;最后将WiFi和ZigBee传输技术结合来搭建温室远程控制系统。Matlab/Simulink仿真实验结果表明,模糊切换控制策略比传统模糊PID控制拥有更小的超调量、较高的稳定性,能够达到较好的控制效果。同时,实际运行结果表明,温室微喷控制系统丢包率小于15%,温室空气湿度能控制在89%左右,运行稳定且符合温室空气湿度控制要求,实现了温室空气湿度的精确控制,为发展设施化农业精细化控制提供一种解决思路。
Aiming at the problems of instability and poor adaptability of the control algorithm of the greenhouse micro-spraying system,in this study,a smooth switching control algorithm was designed by using fuzzy rules.The step modeling method was used to set up the mathematical model of micro spray volume and air humidity,which simplified the greenhouse air humidity model.Finally,WiFi and ZigBee transmission technology were combined to build the greenhouse remote control system.The simulation results of Matlab/Simulink showed that the fuzzy switching control strategy had smaller overshoot and higher stability than the traditional fuzzy PID control,and could achieve better control effect.At the same time,the actual operation results showed that the packet loss rate of greenhouse micro-spray control system was less than 15%,and the greenhouse air humidity could be controlled at about 89%.The operation was stable and met the requirements of greenhouse air humidity control,which realized the precise control of greenhouse air humidity,and provided a solution for the development of agricultural fine control.
作者
付聪
郑世健
陈果
刘知贵
FU Cong;ZHENG Shi-jian;CHEN Guo;LIU Zhi-gui(Graduate School of China Academy of Engineering Physics,Mianyang 621000,Sichuan Province,China;Information Engineering College,Southwest University of Science and Technology,Mianyang 621000,Sichuan Province,China)
出处
《节水灌溉》
北大核心
2021年第4期28-34,共7页
Water Saving Irrigation
基金
四川省科技厅项目“食用、观赏、药用兼用果树新种类费约果(Feijoa)产业化开发应用集成技术研究”(2014HH0053)。
