Spectral matching for parameter estimation in nonlinear input-output models

2001 ◽  
Author(s):  
O. Markusson ◽  
H. Hjalmarsson
Keyword(s):  
Parameter Estimation ◽  
Input Output ◽  
Spectral Matching ◽  
Nonlinear Input

Non Linear State and Parameters Estimation in Chemical Processes: Analysis and Improvement of Three Estimation Structures Applied to a CSTR

2011 ◽  
Vol 9 (1) ◽  
Author(s):  
Héctor Botero ◽  
Hernán Álvarez
Keyword(s):  
Parameter Estimation ◽  
Chemical Process ◽  
Chemical Processes ◽  
The State ◽  
Convergence Speed ◽  
Parameters Estimation ◽  
State Variables ◽  
Input Output ◽  
On Line ◽  
Linear State

This paper proposes a new composite observer capable of estimating the states and unknown (or changing) parameters of a chemical process, using some input-output measurements, the phenomenological based model and other available knowledge about the process. The proposed composite observer contains a classic observer (CO) to estimate the state variables, an observer-based estimator (OBE) to obtain the actual values of the unknown or changing parameters needed to tune the CO, and an asymptotic observer (AO) to estimate the states needed as input to the OBE. The proposed structure was applied to a CSTR model with three state variables. With the proposed structure, the concentration of reactants and other CSTR parameters can be estimated on-line if the reactor and jacket temperatures are known. The procedure for the design of the proposed structure is simple and guarantees observer convergence. In addition, the convergence speed of state and parameter estimation can be adjusted independently.

A Nonlinear Input-Output Model of a Multisectored Economy

Econometrica ◽  
1973 ◽  
Vol 41 (6) ◽  
pp. 1167 ◽  
Author(s):  
I. W. Sandberg
Keyword(s):  
Input Output ◽  
Nonlinear Input

Parameter estimation of linear systems with input-output noisy data: A generalized lp norm approach

1994 ◽  
Vol 37 (3) ◽  
pp. 345-356 ◽  
Author(s):  
Jeng-Ming Chen ◽  
Bor-Sen Chen ◽  
Wei-Sheng Chang
Keyword(s):  
Parameter Estimation ◽  
Linear Systems ◽  
Noisy Data ◽  
Input Output ◽  
Lp Norm
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