A new methodology to design extended Kalman filters: application to distillation columns

摘要

An exponentially converging observer for the composition profile of distillation columns is presented. Its design is based on the structural properties of observability of distillation column models. A new canonical form that makes it possible to take supplementary measurements (the temperature of sensitive trays) into account is introduced. The proposed approach makes it possible to build a new high-gain extended Kalman filter on a more general canonical form. The observer considered has improved robustness to bounded modeling errors.