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See detailComparison of discrete and continuous-discrete observers for composition estimation in distillation columns
Aguilera Gonzalez, Adriana UL; Tellez-Anguiano, Adriana; Astorga-Zaragoza, Carlos Manuel et al

in International Symposium on Advanced Control of Chemical Processes, ADCHEM 2009 (2009)

In this paper we present a high-gain observer implemented in its discrete and continuous-discrete versions in order to compare the performance of both algorithms. The comparison is made considering the ... [more ▼]

In this paper we present a high-gain observer implemented in its discrete and continuous-discrete versions in order to compare the performance of both algorithms. The comparison is made considering the sampling time used to perform the observer’s correction stage in order to establish that the continuous-discrete observer is the best option when a low sampling time is used. Under this condition the continuous discrete observer can process data performing a reliable on-line estimation of the system (a slow dynamics of the process is required). We apply both algorithms to a distillation column that uses the Ethanol-Water binary mixture. [less ▲]

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