| 引用本文: | 王永涛,刘 坚,李家春,等.基于Smith PSO-Fuzzy PID的营养液EC值调控模型研究[J].灌溉排水学报,2022,41(11):37-44. |
| WANG Yongtao,LIU Jian,LI Jiachun,et al.基于Smith PSO-Fuzzy PID的营养液EC值调控模型研究[J].灌溉排水学报,2022,41(11):37-44. |
|
| 摘要: |
| 【目的】探寻多通道水肥控制装置的精准调控与控制技术。【方法】本文设计了由工业铝型材机架、主管路系统、吸肥系统、混肥系统、检测系统、控制系统及施肥系统等7部分构成的多通道水肥一体化装置，构建了基于PSO优化Fuzzy PID的营养液EC值调控模型并引入Smith预估当中（Smith PSO-Fuzzy PID）。并以目标EC值2 mS/cm为例，采用MATLAB分别进行了传统PID、模糊PID（Fuzzy PID）和Smith PSO-Fuzzy PID仿真。【结果】采用Smith PSO-Fuzzy PID控制方法，稳态时间约为47 s，超调量约为4.83%，系统EC值稳定在1.987~2.080 mS/cm。【结论】与传统PID和Fuzzy PID相比，本文基于PSO优化Fuzzy PID的水肥装置Smith控制系统，具有更快的响应速度，更高的精度。 |
| 关键词: Smith；PSO；模糊PID控制；水肥一体化 |
| DOI：10.13522/j.cnki.ggps.2022059 |
| 分类号: |
| 基金项目: |
|
| Using the Smith PSO-Fuzzy PID Model to Control Electrical Conductivity of Nutrient Solution of Precision Fertilization |
|
WANG Yongtao, LIU Jian, LI Jiachun, CHEN Bo, LI Qing
|
|
1. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University,
Changsha 410082, China; 2. Guizhou Institute of Water Resources Science, Guiyang 550002, China;
3. School of Mechanical Engineering, Guizhou University, Guiyang 550025, China
|
| Abstract: |
| 【Background and objective】Precision irrigation and fertilization not only improve crop yield and quality but also reduce the environmental footprint of agriculture. How to control precise irrigation and fertilization at large scales is a key to achieving this goal. The objective of this paper is to propose such a methodology. 【Method】The method is based on a multi-channel water and fertilizer integration device. It consists of seven parts: an industrial aluminum profile frame, a main pipeline system, a fertilizer suction system, a fertilizer mixing system, a detection system, a control system, and a fertilization system. Based on the PSO optimized Fuzzy PID, a Smith control system (Smith PSO-Fuzzy PID) for water and fertilizer application is constructed. Taking EC of the nutrient solution being 2 mS/cm as the control target, the proposed method is compared with the traditional PID, and the fuzzy PID (Fuzzy PID).【Result】The steady-state time and the overshoot calculated by the proposed method are 47 s and 4.83%, respectively; the EC of the nutrient solution calculated by the proposed method is in the range of 1.987~2.080 mS/cm, very close to the targeted value. 【Conclusion】Compared with traditional PID and Fuzzy PID, the proposed method for controlling water and fertilizer application has the advantages of fast response and high precision. |
| Key words: Smith; PSO; Fuzzy PID control; water and fertilizer integration |
