PARAMETER-IDENTIFICATION FOR A MODEL OF CHROMATOGRAPHIC COLUMN

Here we are interested in identifying the flux in a system of conserva tion laws. This problem is ill-posed, but we can deal with the indeter mination by using an a priori problem as a constrained minimization of a cost function J. A Lagrangian formulation leads us to a formal comp utation of that gradient of J. We then perform an exact computation of the gradient of the discrete cost function. Finally, we give a few nu merical results obtained through a conjugate gradient method.