Intelligent control method for air temperature and humidity of greenhouse in facility agriculture

A greenhouse and control method technology, applied in the direction of non-electric variable control, control/adjustment system, and simultaneous control of multiple variables, can solve the problems of unsatisfactory control level and low steady-state precision, so as to ensure rapidity and improve Effect of Steady-State Accuracy

Inactive Publication Date: 2016-10-26
TAIYUAN UNIV OF TECH
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Problems solved by technology

[0008] The purpose of the present invention is to provide an intelligent control method for air temperature and humidity in facility agricultural greenhouses to solve the problems of low steady-state accuracy and unsatisfactory control level of conventional fuzzy control methods in greenhouses

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  • Intelligent control method for air temperature and humidity of greenhouse in facility agriculture

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[0016] In order to facilitate the understanding of the purpose, technical solutions and advantages of the present invention, the specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0017] as attached figure 1 As shown, implementing the above-mentioned air temperature and humidity intelligent control method applied to facility agricultural greenhouses provided by the present invention, two fuzzy controllers with different structures and a coordination controller are designed to work together, according to the position of the temperature and humidity parameters According to different ranges, the system operation process is divided into two states of "fast control" and "fine control", and the cooperative controller recognizes the current operati...

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Abstract

The invention relates to an intelligent control method for an air temperature and humidity of a greenhouse in facility agriculture. According to the method, two fuzzy controllers and a coordinating controller work cooperatively; the coordinating controller identifies a current operation state of a system; when an error is large, the fuzzy controller I is selected, so that temperature and humidity parameters fall back to a reasonable zone rapidly; and when an error is small, the fuzzy controller II is selected, so that temperature and humidity parameters are stabilized in a small range close to a target value. With the method, problems of large overshoot and low stability precision of the traditional single-structure fuzzy control method can be solved. Moreover, because the coupling relation between environment factors are taken into consideration fully by a multi-factor coordination control strategy, the regulation way is more scientific and reasonable than the single-factor control way.

Description

technical field [0001] The invention relates to a method for regulating temperature and humidity in a greenhouse, in particular to an intelligent control method for air temperature and humidity applied to a greenhouse for facility agriculture. Background technique [0002] The greenhouse is an important part of my country's facility agriculture. When the external environmental conditions are not conducive to crop growth, the greenhouse can use its enclosure facilities and environmental control equipment to ensure its normal production process. It is important for improving crop yield and quality, stabilizing food supply, and ensuring food Security matters. The environmental variables that need to be regulated in the greenhouse include temperature, light, water, air, fertilizer, etc. Among them, air temperature and air humidity are the dominant environmental factors in the facility, which have the most significant impact on the growth and development of crops. [0003] The gr...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D27/02
CPCG05D27/02
Inventor 宋建成韩毅邢希君许春雨耿蒲龙郑丽君
Owner TAIYUAN UNIV OF TECH
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