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Proceedings Paper

Integrated control algorithms for plant environment in greenhouse
Author(s): Kanyu Zhang; Lujuan Deng; Youmin Gong; Shengxue Wang
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Paper Abstract

In this paper a survey of plant environment control in artificial greenhouse was put forward for discussing the future development. Firstly, plant environment control started with the closed loop control of air temperature in greenhouse. With the emergence of higher property computer, the adaptive control algorithm and system identification were integrated into the control system. As adaptation control is more depending on observation of variables by sensors and yet many variables are unobservable or difficult to observe, especially for observation of crop growth status, so model-based control algorithm were developed. In order to evade modeling difficulty, one method is predigesting the models and the other method is utilizing fuzzy logic and neural network technology that realize the models by the black box and gray box theory. Studies on control method of plant environment in greenhouse by means of expert system (ES) and artificial intelligence (AI) have been initiated and developed. Nowadays, the research of greenhouse environment control focus on energy saving, optimal economic profit, enviornment protection and continualy develop.

Paper Details

Date Published: 2 September 2003
PDF: 7 pages
Proc. SPIE 5253, Fifth International Symposium on Instrumentation and Control Technology, (2 September 2003); doi: 10.1117/12.522083
Show Author Affiliations
Kanyu Zhang, Shanghai Univ. (China)
Lujuan Deng, Shanghai Univ (China)
Zhengzhou Institute of Light Industry (China)
Youmin Gong, Shanghai Univ. (China)
Shengxue Wang, Shanghai Univ. (China)


Published in SPIE Proceedings Vol. 5253:
Fifth International Symposium on Instrumentation and Control Technology

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