Software sensors design for the simultaneous saccharification and fermentation of starch to ethanol

作者: Pablo A. López Pérez , Rafael Maya Yescas , Rigel V. Gomez Acata , Vicente Peña Caballero , Ricardo Aguilar López

DOI: 10.1016/J.FUEL.2012.11.020

关键词:

摘要: Abstract A local analysis of stability and observability the ethanol process are determined for continuous operation. It is found that stable noncompletely observable in selected steady states. The was studied terms matrix rank conditions. Furthermore, we design a nonlinear observer order to estimate state variables. software sensor (state estimator) developed considering only one measurable variable, glucose concentration, taking account model uncertainties, which realistic issue. Some sufficient conditions existence proposed obtained, guarantee convergence methodology. maximum production obtained by manipulating dilution rate with optimal initial substrate concentration subspace determinate allows estimating six variables (starch susceptible starch biomass enzyme concentration). Numerical simulations provided show effectiveness where comparison standard sliding-mode done.

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