On the effect of the estimation structure in the functioning of a nonlinear copolymer reactor estimator
作者： Teresa López , Jesús Alvarez
DOI: 10.1016/S0959-1524(03)00030-1
关键词: Propagation of uncertainty 、 Trimmed estimator 、 Nonlinear system 、 Efficient estimator 、 Control theory 、 Mathematics 、 Extended Kalman filter 、 Estimator 、 Work (thermodynamics) 、 Robustness (computer science) 、 Control and Systems Engineering 、 Modelling and Simulation 、 Industrial and Manufacturing Engineering 、 Computer Science Applications
摘要: Abstract In this work, the effect of estimation structure on performance and robustness characteristics a geometric nonlinear estimator is studied for free-radical continuous solution copolymerization reactors where conversion, composition, average molecular weight, solid mass fraction, production rate are inferred from temperature, density, refractive index, volume, flowrate measurements. The case study based characterization robust detectability property, yielding set admissible structures that represent degree freedom in design. choice determines reconstruction error propagation mechanism. Measures estimability (i.e., detectability) introduced to discriminate structures. functioning results confirm ones drawn structural assessment stage, yield best behavior attained with different nominal underlies fixed-structure EKF Luenberger techniques employed previous polymer reactor studies.
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