Integrated control algorithms for plant environment in greenhouse

Kanyu Zhang; Lujuan Deng; Youmin Gong; Shengxue Wang

doi:10.1117/12.522083

2 September 2003 Integrated control algorithms for plant environment in greenhouse

Kanyu Zhang, Lujuan Deng, Youmin Gong, Shengxue Wang

Proceedings Volume 5253, Fifth International Symposium on Instrumentation and Control Technology; (2003) https://doi.org/10.1117/12.522083
Event: Fifth International Symposium on Instrumentation and Control Technology, 2003, Beijing, China

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.

Citation Download Citation

Kanyu Zhang, Lujuan Deng, Youmin Gong, and Shengxue Wang "Integrated control algorithms for plant environment in greenhouse", Proc. SPIE 5253, Fifth International Symposium on Instrumentation and Control Technology, (2 September 2003); https://doi.org/10.1117/12.522083

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