2024-03-29T06:19:30Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/579852022-12-20T08:53:17Zcom_10261_47com_10261_8col_10261_300
Modeling and adaptive control for batch sterilization
Alonso, Antonio A.
Banga, Julio R.
Pérez Martín, Ricardo Isaac
Adaptive control
Batch sterilization
IMC framework
14 páginas, 1 apéndice, 12 figuras
This contribution addresses the control problem associated with tracking temperature profiles in batch sterilization
processes. Dynamic variability of the plant and the unsteady state heat transfer to the product are shown to cause a
significant performance degradation when simple PID-type controllers are employed to control the operation. This
is especially true when operating at high temperature and low energy consumption. To improve performance, several
adaptive control techniques such as selftuning regulator, stable adaptive control and adaptive IMC are compared on
a simulation background, and their advantages and drawbacks discussed. In particular, it is shown that performance
degradation often occurs at the early stages of recursive estimation, resulting in product overprocessing. To overcome
such control degradation, a priori information derived from conservation principles of mass and energy, is
incorporated into the control structure and combined with classical recursive identification techniques. This will
avoid the appearance of high parameter uncertainty that otherwise would cause degradation of the closed loop
response and/or instability. The complete scheme will be included into the IMC framework and their efficiency
demonstrated on tracking sets of constant as well as variable (optimum) set point profiles for batch thermal
processing
This work was financially supported by a research grant
from the Comision Interministeriai de Ciencia y
Tecnologia, CICYT project ALI91-0712, Spain.
Peer reviewed
2012-10-15T09:55:33Z
2012-10-15T09:55:33Z
1998
artículo
http://purl.org/coar/resource_type/c_6501
Computers and Chemical Engineering 22(3): 445-458 (1998)
0098-1354
http://hdl.handle.net/10261/57985
10.1016/S0098-1354(97)00250-0
1873-4375
en
http://dx.doi.org/10.1016/S0098-1354(97)00250-0
open
Elsevier