Synthesis of feedback controls using optimization theory--An example

This paper illustrates the use of optimization theory in the synthesis of a linear time-varying feedback control by carrying out the design of an aircraft landing system. The optimization method employed is the Parametric Expansion Method. A number of different controls are synthesized by selecting different functional forms for the weighting factors appearing in the error index formulated from the performance requirements. These controls are compared by presenting the landing trajectories of the aircraft.