Design of an autoland controller for an F-14 aircraft using H-infinity synthesis

Our purpose is to present the results of a design effort to incorporate direct lift control into the F-14 aircraft automatic carrier landing system. This was accomplished using a new design methodology whereby typical single input/single output design specifications were translated into the weighting functions of an T^oo output-feedback synthesis problem. Next, robustness of the Tioo controller was analyzed using the structured singular value concept (JJL). A simplified uncertainty model for air vehicles based on flight test data was developed for this analysis. Finally, the resulting controller was successfully validated on the nonlinear simulation.