Multi-objective Optimization Research on Aircraft Flight Control System Design Based on Criterion

With regard to the disadvantage of lack of correlation between the single objective optimization of flight control system and the flight quality requirements,and the disadvantage of ambiguous physical meaning,a multi-objective optimization method by using the reference model based on the C* criterion was proposed.Firstly,the reference model was built based on the flight quality,which can meet the demand of the desired flight quality.Then,the model following method can bring the flight quality and the performance of aircraft into the multi-objective optimization method,which makes the whole process of physical meaning more explicit.Finally,using the multi-objective NSGA-II for numerical simulation of a certain type of aircraft longitudinal control law,the results show that the proposed method can effectively improve the efficiency of the controller parameters tuning,and the tuning results can meet the expectations of the flight qualities requirements.