Author/Authors
T. Lo´ pez and J. Alvarez، نويسنده ,
DocumentNumber
1384567
Title Of Article
On the eect of estimation structure in the functioning of a nonlinearcopolymer reactor estimator
شماره ركورد
11469
Latin Abstract
In this work, the effect of the estimation structure on the performance and robustness characteristics of a geometric nonlinear
estimator is studied for free-radical continuous solution copolymerization reactors where conversion, composition, average molecular
weight, solid mass fraction, and production rate are inferred from temperature, density, refractive index, volume, and flowrate
measurements. The case study is based on the geometric characterization of the robust detectability property, yielding a set of
admissible estimator structures that represent a degree of freedom in the estimator design. The choice of structure determines the
estimator reconstruction rate and error propagation mechanism. Measures of estimability (i.e., robust detectability) are introduced
to discriminate structures. The estimator functioning results confirm the ones drawn from the structural assessment stage, and yield
that the best estimator behavior is attained with a structure different from the nominal detectability structure that underlies the
nonlinear fixed-structure EKF and Luenberger techniques employed in previous polymer reactor estimation studies.
From Page
99
NaturalLanguageKeyword
Polymer reactor , Observability structure , Detectability measures , nonlinear detector , Detectability structure , Robustdetector , Chemical processes
JournalTitle
Studia Iranica
To Page
109
To Page
109
Link To Document