8th International IFAC Symposium on Dynamics and Control of Process Systems DESIGN OF AN INTERVAL OBSERVER FOR EXOTHERMIC FED-BATCH PROCESSES
نویسندگان
چکیده
This paper proposes an interval observer for continuous or fed-batch chemical reactors with uncertainties related to both the heat exchange coefficient and the kinetics. The interval observer provides an upper and a lower bound of the state given bounds for the uncertain parameters. The underand over-estimators are state observers for the non-linear reactor model with two positive tuning parameters that guarantees that the estimated interval contains the state and that the interval width is limited. The observer performance are illustrated with the production of a resin in an industrial fed-batch reactor. Copyright c ©2007 IFAC
منابع مشابه
A Variable Structure Observer Based Control Design for a Class of Large scale MIMO Nonlinear Systems
This paper fully discusses how to design an observer based decentralized fuzzy adaptive controller for a class of large scale multivariable non-canonical nonlinear systems with unknown functions of subsystems’ states. On-line tuning mechanisms to adjust both the parameters of the direct adaptive controller and observer that guarantee the ultimately boundedness of both the tracking error and tha...
متن کامل8th International IFAC Symposium on Dynamics and Control of Process Systems CONTROLLED VARIABLES SELECTION FOR A BIOLOGICAL WASTEWATER TREATMENT PROCESS
This paper considers control structure selection for a biological wastewater treatment process, with emphasis on identifying controlled variables that contribute to minimize economic costs. This is achieved according to the selfoptimizing procedure proposed by Skogestad (2000). The aim is to demonstrate how, with simple considerations on the control structure design, the efficiency of a wastewa...
متن کاملConfidence Interval Estimation of the Mean of Stationary Stochastic Processes: a Comparison of Batch Means and Weighted Batch Means Approach (TECHNICAL NOTE)
Suppose that we have one run of n observations of a stochastic process by means of computer simulation and would like to construct a condifence interval for the steady-state mean of the process. Seeking for independent observations, so that the classical statistical methods could be applied, we can divide the n observations into k batches of length m (n= k.m) or alternatively, transform the cor...
متن کامل8th International IFAC Symposium on Dynamics and Control of Process Systems IMPLEMENTATION OF OPTIMAL OPERATION USING OFF-LINE COMPUTATIONS
The computational effort involved in the solution of real-time optimization problems can be very demanding. Hence, simple but effective implementation of optimal policies are attractive. The main idea is to use off-line calculations and analysis to determine the structure and properties of the optimal solution. This will be used to determine alternate representations of the optimal solution tha...
متن کاملDesign of On-line State Estimators for a Recombinant E. Coli Fed-batch Fermentation
In recent years a remarkable effort has been made in the development of new sensors and process analytical technology. However, it is still difficult to find reliable and low cost commercial sensors for on-line measurements of important variables. Therefore, considerable attention has been focused on the development of on-line software sensors. Nevertheless, the application of those algorithms ...
متن کامل