Normalized Fuzzy Control of High Density Aquiculture’s Dissolved Oxygen

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Abstract:

The viscosity of DO(dissolved oxygen) in high density aquiculture is affected by many factors, and its characters have nonlinearity, hysteresis and big-inertial. Normal PID control is difficult to achieve perfect purpose. According to the variety of DO’s viscosity, a fuzzy algorithm was advanced to make system output relevant voltage/frequency to be master of transducer. It can control the electric machine’s rev to ensure the steady DO’s viscosity, at the same time it can also save energy and prolong equipment’s useful time

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Advanced Materials Research (Volumes 490-495)

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3401-3404

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March 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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[1] L. Cereghino, J.M. Cregg, Heterologous protein expression in the methylotrophic yeast Pichia pastoris, FEMS Microbiol. Rev. 24 (2000) 45–66.

DOI: 10.1111/j.1574-6976.2000.tb00532.x

Google Scholar

[2] G.P.L. Cereghino, J.L. Cereghino, C. Ilgen, J.M. Cregg, Production of recombinant proteins in fermenter cultures of the yeast Pichia pastoris, Curr. Opin. Biotechnol. 13 (2002) 329–332.

DOI: 10.1016/s0958-1669(02)00330-0

Google Scholar

[3] A. Bahrami, S.A. Shojaosadati, R. Khalilzadeh, E.F. Vasheghani, Two-stage glycerol feeding for enhancement of recombinant hG-CSF production in a fed-batch culture of Pichia pastoris, Biotechnol. Lett. 30 (2008) 1081–1085.

DOI: 10.1007/s10529-008-9650-4

Google Scholar

[4] S.B. Duan, Z.P. Shi, H.J. Feng, Z.Y. Duan, Z.G. Mao, An on-line adaptive control based on DO/pH measurements and ANN pattern recognition model for fedbatch cultivation, Biochem. Eng. J. 30 (2006) 88–96.

DOI: 10.1016/j.bej.2006.02.007

Google Scholar

[5] W.H. Zhang, M. Ina, M.M. Meagher, Fermentation strategies for recombinant protein expression in the methylotrophic yeast Pichia pastoris, Biotechnol. Bioprocess Eng. 5 (2000) 275–287.

DOI: 10.1007/bf02942184

Google Scholar

[6] F. Hong, N.Q. Meinander, L.J. Jonsson, Fermentation strategies for improved heterologous expression of laccase in Pichia pastoris, Biotechnol. Bioeng. 79(2002) 438–449.

DOI: 10.1002/bit.10297

Google Scholar

[7] S. Suye, A. Ogawa, S. Yokoyama, A. Obayashi, Screening and identification of Candida methanosorbosa as alcohol oxidase-producing methanol using yeast, Agric. Biol. Chem. 54 (1990) 1297–1298.

DOI: 10.1271/bbb1961.54.1297

Google Scholar