摘要
针对设施农业中灌溉系统控制算法不稳定、自适应能力差等问题,通过引入伸缩因子提升自适应模糊控制器的性能,来获得控制精度高、振荡弱的最佳控制方法。结果表明,基于时变论域自适应模糊PID控制系统具有超调量小、调整时间短、稳定性高等优点,相对于传统模糊PID,控制效果明显提升,同时,田间测试的结果表明系统可根据土壤湿度数据进行自动控制,使土壤湿度始终保持在给定值附近,实现灌溉的精准管理和精确控制,为发展设施农业精准灌溉提供一种新的解决方案。
In view of the problems of unstable control algorithm and poor adaptive ability of irrigation system in facility agriculture,an adaptive fuzzy controller was introduced to improve its performance,so as to obtain the optimal control method with high control accuracy and weak oscillation.The results showed that the variable universe fuzzy-PID control system had the advantages of lower overshoot,short adjusting time and high stability.Compared with the traditional fuzzy PID,the control effect was improved significantly.At the same time,the field test results showed that the system could be automatically controlled according to the soil moisture data,so that the soil moisture was always kept near the given value,which realized the accurate management and control of irrigation,and provided a new solution for the development of precision irrigation in facility agriculture.
作者
王正
孙兆军
WANG Zheng;SUN Zhao-jun(College of Xinhua,Ningxia University,Yinchuan 750021,China;School of Civil Engineering and Hydraulic Engineering,Ningxia University,Yinchuan 750021,China;Institute of Environmental Engineering,Ningxia University,Yinchuan 750021,China;China Ningxia (China-Arab) Key Laboratory of Resources Assessment and Environmental Regulation in Arid Regions,Yinchuan 750021,China)
出处
《节水灌溉》
北大核心
2020年第7期81-84,88,共5页
Water Saving Irrigation
基金
宁夏2019-2020年度高等学校“双师型实践锻炼计划”项目(2019073)
宁夏大学新华学院科学研究基金资助项目(18XHKY01)。
关键词
土壤湿度
智能滴灌系统
模糊PID
时变论域
自适应
soil moisture
intelligent irrigation system
fuzzy-PID
variable universe
self-adaptive
