A non-linear software sensor to monitor the internal nitrogen quota of phytoplanktonic cells

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• 作者：Bernard ; Olivier ; Sciandra ; Antoine ; Sallet ; Gauthier
• 关键词：Droop model ; non-linear systems ; observers ; phytoplankton ; modè ; le de Droop ; systè ; mes non liné ; aires ; observateurs ; phytoplancton
• 刊名：Oceanologica Acta
• 出版年：2001
• 出版时间：September - October, 2001
• 年：2001
• 卷：24
• 期：5
• 页码：435-442
• 全文大小：129 K

文摘

New techniques – called software sensors – issued from the non-linear automatic control field and initially developed for non-linear chemical systems have been applied to a continuous culture of phytoplankton. A software sensor (or ‘observer’) combines an analytical differential equation based model and partial measurements of the system in order to estimate the non-measured state variables. It filters data and estimates the actual state of living systems, models of which are often rough approximations. The efficiency of this approach is illustrated with a nitrate-limited chemostat experiment with the chlorophyceae Dunaliella tertiolecta performed in a computer controlled fluctuating environment.