Author/Authors :
Jesus Alvarez، نويسنده , , Teresa L?pez and Eduardo Hern?ndez، نويسنده ,
Latin Abstract :
In this work is presented a practical (i.e. nonlocal) robust estimation design to infer the main safety, production, and quality
variables of batch, semibatch, or continuous free-radical homopolymer reactors with on-line measurements of free monomer,
temperature, and volume. The solvability of the problem is established a priori, and the design features a robust nonlocal uniform
convergence criterion coupled with a systematic construction-tuning procedure. The nonlocal stability framework exhibits the per-
formance-robustness tradeo, as well as the relationship between the sizes of the estimate error, initial state, exogenous input, and
model parameter errors. The tuning of gains of the estimator can be executed with conventional ®ltering techniques for linear
single-output ®lters. The polymerization of methyl methacrylate with AIBN initiator is considered as an application example, and
the robust nonlocal functioning of the estimator is corroborated with numerical simulations.
NaturalLanguageKeyword :
Chemical industry , Polymerization reactors , Robust nonlinear estimation , Nonlocal state estimation , Semiglobal estimation
