模糊控制在太阳能自动灌溉系统中的应用

Application of fuzzy control in solar automatic irrigation system

根据农作物的需水量实施适时适量的自动灌溉,是提高农业用水效率和增加农作物产量的重要方法。为解决农作物适时适量灌溉的问题,设计了一种以茶树为灌溉对象,适用于太阳能自动灌溉系统的模糊控制灌溉模式。通过检测茶树园的实际土壤温湿度,并与茶树生长的最适湿度进行比较,以该偏差及其变化率为输入,根据实际农业灌溉过程中建立的模糊控制规则,实现了茶树园的自动节水灌溉,最后通过Matlab进行了仿真。仿真结果显示,该太阳能自动灌溉系统时间常数为1.5 s,系统运行稳定,响应时间符合实际灌溉的要求。

According to crop water demand, the implementation of timely and appropriate automatic irrigation is an important method to improve agricultural water use efficiency and increase crop yields. In order to solve the problem of timely and appropriate irrigation, a fuzzy controlled solar automatic irrigation system for tea trees was designed. By detecting actual soil temperature and moisture of the tea tree garden, and comparing with the optimal humidity of the growth of tea trees, taking the deviation and its change rate as the inputs, according to the fuzzy control rules established in the actual process of agricultural irrigation, automatic water-saving irrigation for the tea tree garden was achieved. Finally, simulation results in Matlab show that the system time constant is 1.5 seconds. The system is stable, and the response time meets the actual irrigation requirements.