Design and Experiment of a Targeted Variable Fertilization Control System for Deep Application of Liquid Fertilizer
Given the problems of targeted variable deep application of liquid fertilizer in the field, such as low precision, inaccurate fertilization amount, and poor fertilization effect, a targeted variable fertilization control system of liquid fertilizer based on a fuzzy PID algorithm was designed in this...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-06-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/13/7/1687 |
| _version_ | 1797590666828578816 |
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| author | Wenqi Zhou Tianhao An Jinwu Wang Qiang Fu Nuan Wen Xiaobo Sun Qi Wang Ziming Liu |
| author_facet | Wenqi Zhou Tianhao An Jinwu Wang Qiang Fu Nuan Wen Xiaobo Sun Qi Wang Ziming Liu |
| author_sort | Wenqi Zhou |
| collection | DOAJ |
| description | Given the problems of targeted variable deep application of liquid fertilizer in the field, such as low precision, inaccurate fertilization amount, and poor fertilization effect, a targeted variable fertilization control system of liquid fertilizer based on a fuzzy PID algorithm was designed in this study to realize the combination of precise variable fertilization technology and targeted deep-fertilization technology. Specifically, the fertilization equipment and adaptive fuzzy PID control strategy of targeted variable fertilization were designed first. Then, the mathematical model of the targeted variable fertilization control system of liquid fertilizer was established following the requirements of intertillage and fertilization of corn crops. Afterward, the response time and overshoot of the control system were simulated through the Simulink tool of MATLAB software, in which the fuzzy PID control and traditional PID control were compared. Then, the control effect of the targeted variable fertilization control system was verified through field experiments. The test results demonstrated that in the process of simulation analysis, the response time of the variable fertilization control system based on fuzzy PID control was shortened by nearly 5 s on average compared to the system based on traditional PID control, and the error was controlled within 10%. In the field test, the target rate of targeted variable fertilization equipment for liquid fertilizer reached more than 80%, and the control accuracy of the liquid fertilizer application amount also remained above 90%. Finally, the tracking experiment to check the fertilization effect proved that the targeted variable deep-fertilization method of liquid fertilizer could further improve the yield of maize crops under the premise of reducing the fertilization cost. The study provides a feasible solution for the method of precise variable fertilization combined with targeted fertilization. |
| first_indexed | 2024-03-11T01:23:47Z |
| format | Article |
| id | doaj.art-ab443dbbb3fa4a08bf06e8f6178bb187 |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-11T01:23:47Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-ab443dbbb3fa4a08bf06e8f6178bb1872023-11-18T17:54:40ZengMDPI AGAgronomy2073-43952023-06-01137168710.3390/agronomy13071687Design and Experiment of a Targeted Variable Fertilization Control System for Deep Application of Liquid FertilizerWenqi Zhou0Tianhao An1Jinwu Wang2Qiang Fu3Nuan Wen4Xiaobo Sun5Qi Wang6Ziming Liu7College of Engineering, Northeast Agricultural University, Harbin 150030, ChinaCollege of Engineering, Northeast Agricultural University, Harbin 150030, ChinaCollege of Engineering, Northeast Agricultural University, Harbin 150030, ChinaSchool of Water Conservancy & Civil Engineering, Northeast Agricultural University, Harbin 150030, ChinaCollege of Engineering, Northeast Agricultural University, Harbin 150030, ChinaCollege of Engineering, Northeast Agricultural University, Harbin 150030, ChinaCollege of Engineering, Northeast Agricultural University, Harbin 150030, ChinaCollege of Engineering, Northeast Agricultural University, Harbin 150030, ChinaGiven the problems of targeted variable deep application of liquid fertilizer in the field, such as low precision, inaccurate fertilization amount, and poor fertilization effect, a targeted variable fertilization control system of liquid fertilizer based on a fuzzy PID algorithm was designed in this study to realize the combination of precise variable fertilization technology and targeted deep-fertilization technology. Specifically, the fertilization equipment and adaptive fuzzy PID control strategy of targeted variable fertilization were designed first. Then, the mathematical model of the targeted variable fertilization control system of liquid fertilizer was established following the requirements of intertillage and fertilization of corn crops. Afterward, the response time and overshoot of the control system were simulated through the Simulink tool of MATLAB software, in which the fuzzy PID control and traditional PID control were compared. Then, the control effect of the targeted variable fertilization control system was verified through field experiments. The test results demonstrated that in the process of simulation analysis, the response time of the variable fertilization control system based on fuzzy PID control was shortened by nearly 5 s on average compared to the system based on traditional PID control, and the error was controlled within 10%. In the field test, the target rate of targeted variable fertilization equipment for liquid fertilizer reached more than 80%, and the control accuracy of the liquid fertilizer application amount also remained above 90%. Finally, the tracking experiment to check the fertilization effect proved that the targeted variable deep-fertilization method of liquid fertilizer could further improve the yield of maize crops under the premise of reducing the fertilization cost. The study provides a feasible solution for the method of precise variable fertilization combined with targeted fertilization.https://www.mdpi.com/2073-4395/13/7/1687targeted variable fertilizationfuzzy PIDsimulation analysisliquid fertilizercontrol system |
| spellingShingle | Wenqi Zhou Tianhao An Jinwu Wang Qiang Fu Nuan Wen Xiaobo Sun Qi Wang Ziming Liu Design and Experiment of a Targeted Variable Fertilization Control System for Deep Application of Liquid Fertilizer Agronomy targeted variable fertilization fuzzy PID simulation analysis liquid fertilizer control system |
| title | Design and Experiment of a Targeted Variable Fertilization Control System for Deep Application of Liquid Fertilizer |
| title_full | Design and Experiment of a Targeted Variable Fertilization Control System for Deep Application of Liquid Fertilizer |
| title_fullStr | Design and Experiment of a Targeted Variable Fertilization Control System for Deep Application of Liquid Fertilizer |
| title_full_unstemmed | Design and Experiment of a Targeted Variable Fertilization Control System for Deep Application of Liquid Fertilizer |
| title_short | Design and Experiment of a Targeted Variable Fertilization Control System for Deep Application of Liquid Fertilizer |
| title_sort | design and experiment of a targeted variable fertilization control system for deep application of liquid fertilizer |
| topic | targeted variable fertilization fuzzy PID simulation analysis liquid fertilizer control system |
| url | https://www.mdpi.com/2073-4395/13/7/1687 |
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