Public reporting bunten for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Robust Command Augmentation System Design Using Genetic Methods AUTHOR(S)G.D. Sweriduk, P.K. Menon, and ML. Stienberg PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES)Naval l Abstract This paper describes the use of a genetic search method in the design of a command augmentation system for a high-performance aircraft. A genetic algorithm is used in the design of H^ controllers for the longitudinal and lateral-directional channels by selecting the weighting functions. The integral of absolute value of error between the actual response and that of an ideal model is used as the fitness criterion, along with additional terms to penalize for cross-coupling between p s and ny, non-minimum phase behavior, and the closed-loop infinity-norm bound, y. Starting from an initial population of weighting functions, the algorithm generates new functions with the goal of improving the fitness. These controllers are then evaluated in a 6 degree-offreedom nonlinear model of the aircraft.