Optimization for Flight Control System with Constraints Supplemented Handling Qualities

In this study, the direct method including evaluation criteria of handling qualities as optimization method’s constraints are carried out to complement problems of the indirect method that assesses whether a flight control system designed by existing optimization techniques satisfies handling qualities or not. For the direct method, co-evolutionary augmented Lagrangian method is used. F-16 longitudinal flight control system is performed the optimization with the performance index and constraints. Moreover, present optimization technique can optimize flight condition one by one. In case of performing optimization for several flight conditions, it should be executed as many times as flight conditions. Although reliability of the optimization result can be high in that case, it is required considerable time for the optimization. To solve this problem, an optimization method is constructed with gain scheduling. Then we study techniques that have lower reliability about performances than one of the former but computation time is able to abridge.