FEEDBACK-CONTROL OF NONLINEAR DIFFERENTIAL-ALGEBRAIC-EQUATION SYSTEMS

The output feedback control problem is addressed for a class of nonlin ear multivariable high-index differential-algebraic-equation systems i n semiexplicit form. initially, an algorithmic procedure is developed and used to derive an equivalent state-space realization of the constr ained system. An output feedback synthesis problem is then formulated on the basis of the derived state-space realization and solved through the combination of state feedback and appropriate state observers. Th e developed methodology is applied to a two-phase reactor, and its per formance and robustness characteristics are evaluated through simulati ons.