Incorporating global information into local nonlinear controllers

An approximation scheme that allows the incorporation into nonlinear controllers of control information that improves the global response while still providing the desired local response is developed. The extended-linearization method for designing local nonlinear controllers is summarized. The extent to which global information can be incorporated into the local controller is discussed. The specific approximation scheme considered is discussed. Simulation results for a chemical reactor example are given. Future directions for research indicated by the preliminary results are discussed