Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 538093
Title Optimal control of Chinese solar greenhouse cultivation
Author(s) Xu, Dan; Du, Shangfeng; Willigenburg, L.G. van
Source Biosystems Engineering 171 (2018). - ISSN 1537-5110 - p. 205 - 219.
DOI https://doi.org/10.1016/j.biosystemseng.2018.05.002
Department(s) VLAG
Biometris (WU MAT)
Publication type Refereed Article in a scientific journal
Publication year 2018
Keyword(s) Chinese solar greenhouse - LED lighting - Receding horizon optimal control - Time scales
Abstract

The benefits of introducing heating, CO2 supply, ventilation and LED lighting in a Chinese solar greenhouse are investigated. To that end, a two time-scale receding horizon optimal control system is assumed to accompany the introduction. The model of the Chinese solar greenhouse dynamics used by the optimal control system incorporates the effect of a north wall, present in any Chinese solar greenhouse. This wall stores heat during the day and releases heat at night to improve temperature. The optimal control system also takes control of a thermal blanket, that can be partly opened and closed to reduce heat loss to the environment. Apart from performing real-time optimal control, the optimal control system enables computation of improvements in terms of profit. Finally the feasibility of real-time implementation of the two time-scale receding horizon optimal control system on a personal computer is verified.

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