飞机飞行控制多目标优化研究

针对飞行控制系统单目标优化算法与飞行品质要求之间缺乏相关性,且物理意义不明确的缺点,提出了一种基于C*准则的模型参考飞行控制设计多目标优化方法。首先,使用飞行品质建立参考模型,保证所建立的参考模型符合期望飞行品质的要求。然后,通过模型跟随的方法,将飞行品质的要求引入多目标优化中,使得整个优化设计过程物理意义更加明确。最后,使用多目标NSGA-II对某型飞机纵向控制律设计进行数值仿真,结果显示提出的方法可以有效地提高控制器参数整定效率,整定结果满足期望的飞行品质要求。

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.