A method and system for predicting the environment of an agricultural greenhouse
A prediction method and greenhouse technology, applied in the control/regulation system, simultaneous control of multiple variables, instruments, etc., can solve the problem of difficulty in determining the heat transfer coefficient of heat exchange mechanism, and achieve the effect of improving accuracy
Active Publication Date: 2021-11-23
JIANGXI UNIV OF SCI & TECH
View PDF13 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Therefore, the difficulty of greenhouse modeling is that in addition to the complex heat exchange mechanism, various heat transfer coefficients are difficult to determine
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0042] The purpose of the present invention is to provide an agricultural greenhouse environment prediction method and system to improve the accuracy of prediction.
[0043] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0044] Such as figure 1 As shown, the present...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an agricultural greenhouse environment prediction method and system. Firstly, the reference input trajectory is calculated by interpolation according to the measurement data, and the initial greenhouse environment model is updated; secondly, the model parameter identification controller is constructed based on the Lyapunov function; and the controller is identified according to the model parameters. and the initial greenhouse environment model to calculate the optimal solution of each nonlinear time-varying model parameter at time t, and then when t is greater than or equal to the terminal time of the control process, determine the identification general The model parameter solution; finally, the identified general model parameter solution is substituted into the greenhouse environment model to obtain the predicted value of the greenhouse environment. Based on the stability of the Lyapunov function, the present invention determines the identification general model parameter solution, substitutes the identification general model parameter solution into the greenhouse environment model to obtain the greenhouse environment prediction value, comprehensively considers a plurality of nonlinear time-varying model parameters at different times, and then improves the prediction accuracy.
Description
technical field [0001] The invention relates to the field of environment prediction, in particular to an agricultural greenhouse environment prediction method and system. Background technique [0002] Modern greenhouse crop production is an important mode of production in agricultural production. The production of greenhouse crops has the advantages of high efficiency and high quality, and it can carry out off-season production to meet people's year-round demand for different types of agricultural products. However, for modern high-end agricultural greenhouses, the prerequisite for high-yield, high-quality, and efficient production is the precise control of the greenhouse environment and water and fertilizer irrigation. At the same time, in order to reduce the energy consumption cost in the production process of greenhouse crops as much as possible and submit the final yield of crops, it is usually necessary to plan and optimize the long-term process control and management ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G05D27/02
CPCG05D27/02
Inventor 苏远平徐立鸿
Owner JIANGXI UNIV OF SCI & TECH