STATE ESTIMATION IN THE BATCH DRYING OF FOODS
作者:
C.T. Kiranoudis,
J. Dimitratos,
Z.B. Maroulis,
D. Marinos-Kouris,
期刊:
Drying Technology
(Taylor Available online 1993)
卷期:
Volume 11,
issue 5
页码: 1053-1069
ISSN:0737-3937
年代: 1993
DOI:10.1080/07373939308916882
出版商: Taylor & Francis Group
关键词: hybrid extended Kalman filter;on-line measurement of material moisture content
数据来源: Taylor
摘要:
Measurement of material moisture content is necessary for the control of product quality in batch drying. However, this variable cannot be measured on-line, and state estimation techniques are proposed. A non-linear dynamic model is developed for batch drying of foods. Process disturbances and measurement errors are modeled as stochastic processes and a hybrid extended Kalman filter is employed for state estimation. This filter is based on the local linearization of the process model around the suboptimal filter estimates. The moisture estimation approach was applied to experimental points obtained in a laboratory dryer with quite satisfactory results.
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