A model for the climate of an innovative closed greenhouse for model based control

被引：3
|
作者：
Speetjens, Bas [1 ]
Xu, Jin [1 ]
van Straten, Gerrit [1 ]
Stigter, Hans [1 ]
机构：
[1] Univ Wageningen & Res Ctr, Syst & Control Grp, Wageningen, Netherlands
来源：
PROCEEDINGS OF THE IIIRD INTERNATIONAL SYMPOSIUM ON MODELS FOR PLANT GROWTH, ENVIRONMENTAL CONTROL AND FARM MANAGEMENT IN PROTECTED CULTIVATION | 2006年 / 718期
关键词：
control; calibration; climate management; closed greenhouse;
D O I：
10.17660/ActaHortic.2006.718.37
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
A new greenhouse type is designed to study ways of decreasing horticultural water use in semi-arid regions. To control the greenhouse a model based control design will be applied. Hereto a model is needed to predict the systems behavior (1 day ahead), without much computational effort. A physics-based model for this new type of greenhouse is developed, based on enthalpy and mass balances. The greenhouse is divided in four compartments; the plant area, the roof area, the heat exchanger and the soil. For all compartments only the main energy and mass fluxes are modeled, in order to keep the model simple. Since the model describes only the main characteristics of the system with physical equations, careful calibration and validation (systems identification) is needed. Real data gained from the experimental greenhouse are used in a controlled random search to find the optimal parameter values.
引用
收藏
页码：323 / +
页数：4
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