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Type: Artigo de periódico
Title: Sensor locations and noise reduction in high-purity batch distillation control loops
Author: Oisiovici, R.M.
Cruz, S.L.
Abstract: The influence of the sensor locations on the composition control of high-purity batch distillation columns has been investigated. Using concepts of the nonlinear control theory, an input-output linearizing controller was implemented to keep the distillate composition constant at a desired value by varying the reflux ratio. An Extended Kalman Filter was developed to estimate the compositions required in the control algorithm using temperature measurements. In the presence of measurement noise, the control performance depended greatly on the sensor locations. Placing the sensors further from the top stages reduced the detrimental effects of noise but increased the inference error. To achieve accurate composition control, both noise reduction and composition estimate accuracy should be considered in the selection of the sensor locations.
Subject: Batch distillation
Nonlinear control
Kalman filter
Sensor location
Editor: Brazilian Society of Chemical Engineering
Rights: aberto
Identifier DOI: 10.1590/S0104-66322000000400031
Date Issue: 1-Dec-2000
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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