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A Multiobjective Fuzzy Model for the Controlling of Citric Acid Fermentation
柠檬酸发酵过程多目标模糊控制模型的研究

Keywords: multiobjective fuzzy model,fermentation control
多目标模糊模型
,发酵控制

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Abstract:

In order to control the process of citric acid fermentation, a multiobjective fuzzy model is put forward in this paper. A series of rules determining the values of the variables in this model, based on the records of citric acid fermentation, the mathematical models from the scientists on biotechnology and the experience from engineers on the fermentation control, is also set up and refined stepwise. To examine this model and these rules experiments were conducted on a 1.5m 3 fermenter. The results show that the citric acid concentration reaches 10.39% with the original glucose concentration 11.30%, in comparison with citric acid concentration 11.4% with the original glucose concentration 14.2% in normal control on a 100 m 3 fermenter. The fermentation time is shortened from 70 hours(normal control ) to 63 hours. The residual glucose concentration hits the lowest level 1.36% in a company.

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