【摘要】 针对传统温室灌溉系统中的节水问题,设计了一种基于Fuzzy-PID算法的温室节水滴灌控制系统。通过采集温室内的实时土壤湿度,基于Fuzzy-PID控制原理,一方面根据植物的生长特性自适应地调节土壤湿度,以保持农作物"不饥不过饱",另一方面在满足温室灌溉需求的基础上进行适时、适量的灌溉,以避免水资源的浪费。仿真实验表明,与传统的模糊控制和PID控制相比,所提出Fuzzy-PID控制的调节时间减少了约17 s,超调量减少了9.4%。实际测试表明,该系统运行稳定,鲁棒性强,节水率约为23%,能够满足节水灌溉的要求,具有良好的推广价值。更多还原

【Abstract】 In order to solve the water-saving problem in traditional greenhouse irrigation system,this paper proposes a water-saving FuzzyPID control system for greenhouse drip-irrigation. Firstly,the real-time soil moisture of greenhouse is measured. Secondly,an adaptive Fuzzy-PID control strategy is presented to adjust the soil moisture according to the nature of plants,which ensures an optimal growing environment and avoids the waste of water resource. Then,simulation results show that compared with traditional Fuzzy control and PID control,the proposed control method can reduce adjustment time by 17 s and decrease overshoot by 9.4%. Finally,experimental results show that the proposed system works stably and has a strong robustness. It can save 23% water consumption and meet the requirements of watersaving irrigation,and has a good popularization value.更多还原