EXPERIMENTAL-DESIGN OF H-INFINITY WEIGHTING FUNCTIONS FOR FLIGHT CONTROL-SYSTEMS

This paper introduces an experimental solution for H(infinity) weighti ng function selection by exploiting an experimental planning method th at has been used in quality control. Conducting matrix experiments usi ng special matrices, called orthogonal arrays, allows the effects of s everal weighting parameters to be determined efficiently so that the r esulting H(infinity) controller can satisfy many design specifications simultaneously in the environment for which the controller is designe d. To show the feasibility and efficiency of this methodology, a fligh t control system for an airplane is designed to satisfy 11 performance specifications simultaneously, when the airplane is undergoing a larg e shift in c.g. position.