Title:
INTELLIGENT MIXED FERTILIZER CONTROL METHOD AND CONTROL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/140188
Kind Code:
A1
Abstract:
An intelligent mixed fertilizer control method and control system. The control method comprises: obtaining an actual fertilization concentration (S1); determining an error and an error change rate according to the actual fertilization concentration and a given fertilization concentration (S2); determining a PID parameter correction value according to the error and the error change rate by using an adaptive fuzzy control algorithm (S3); obtaining a PID parameter at the current time (S4); determining a PID parameter at the next time according to the PID parameter at the current time and the PID parameter correction value (S5); determining a control increment according to the PID parameter at the next time (S6); and controlling the turn-on and turn-off of an electromagnetic valve (3) according to the control increment (S7). The control method combines PID control and adaptive fuzzy control to control the fertilization concentration, thereby improving the accuracy of the mixed fertilizer control process.
Inventors:
ZHAO JINGBO (CN)
ZHU JINGXUHUI (CN)
LIU XINCHAO (CN)
QIU TENGFEI (CN)
ZHU JINGXUHUI (CN)
LIU XINCHAO (CN)
QIU TENGFEI (CN)
Application Number:
PCT/CN2019/000262
Publication Date:
July 09, 2020
Filing Date:
December 30, 2019
Export Citation:
Assignee:
UNIV QINGDAO TECHNOLOGY (CN)
International Classes:
G05B11/42; G05B13/00
Foreign References:
| CN109581863A | 2019-04-05 | |||
| CN104199283A | 2014-12-10 | |||
| CN101221447A | 2008-07-16 | |||
| CN107526291A | 2017-12-29 | |||
| CN108549208A | 2018-09-18 | |||
| CN107360775A | 2017-11-21 | |||
| CN107544263A | 2018-01-05 | |||
| CN108076771A | 2018-05-29 | |||
| KR20080082055A | 2008-09-11 |
Other References:
JIANG, YAN ET AL: "Intelligent System of Water and Fertilizer Based on Internet of Things Technology", MODERN AGRICULTURAL SCIENCE AND TECHNOLOGY, no. 16, 31 August 2018 (2018-08-31), XP009521785, ISSN: 1007-5739
WANG, MAOLI ET AL: "Research on Agricultural Machinery Automatic Steering System Based on Fuzzy PID Algorithm", JOURNAL OF AGRICULTURAL MECHANIZATION RESEARCH, no. 11, 30 November 2018 (2018-11-30), pages 241 - 245, XP009521784, ISSN: 1003-188X
WANG, LIJUAN ET AL: "Study on Control Strategy of Water and Fertilizer Integration Based on Fuzzy Control", JIANGSU AGRICULTURAL SCIENCES, vol. 46, no. 23, 31 December 2018 (2018-12-31), pages 238 - 241, XP009521783, ISSN: 1002-1302
WANG, MAOLI ET AL: "Research on Agricultural Machinery Automatic Steering System Based on Fuzzy PID Algorithm", JOURNAL OF AGRICULTURAL MECHANIZATION RESEARCH, no. 11, 30 November 2018 (2018-11-30), pages 241 - 245, XP009521784, ISSN: 1003-188X
WANG, LIJUAN ET AL: "Study on Control Strategy of Water and Fertilizer Integration Based on Fuzzy Control", JIANGSU AGRICULTURAL SCIENCES, vol. 46, no. 23, 31 December 2018 (2018-12-31), pages 238 - 241, XP009521783, ISSN: 1002-1302
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