Optimal control of Chinese solar greenhouse cultivation

Dan Xu, Shangfeng Du, L.G. van Willigenburg*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

7 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)205-219
JournalBiosystems Engineering
Volume171
DOIs
Publication statusPublished - 1 Jul 2018

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Keywords

  • Chinese solar greenhouse
  • LED lighting
  • Receding horizon optimal control
  • Time scales

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