飞行器多学科设计优化中的灵敏度分析方法研究

近年来,在飞行器设计领域,多学科设计优化(MDO)方法得到了高度重视。灵敏度分析技术作为MDO的关键技术之一,被认为是处理飞行器MDO研究中四个复杂性问题的有力工具。本文对适用于飞行器MDO的灵敏度分析方法进行了系统研究。首先介绍了多种学科灵敏度分析方法,阐述了各种方法的原理,比较了各种方法的优缺点。在此基础上,进一步探讨了几种常用的系统灵敏度分析方法。最后,总结了各种灵敏度分析方法在飞行器MDO中应用的原则,并对发展适用性更广的广义灵敏度分析方法提出了建议。

The Study of Sensitivity Analysis in the Multidisciplinary Design Optimization of Flying Vehicles

The increasing complexity of aircraft engineering systems has sparked increasing interest in multidisciplinary design optimization (MDO) in recent years. As one of the key technologies of MDO, the sensitivity analysis (SA) is a powerful tool for dealing with the "four complexity problems" of the MDO of flying vehicles. Many SA methods fit for MDO of flying vehicles are studied systematically in this paper. Firstly, several individual disciplinary SA methods are introduced, also the details of each method. And comparisons of these methods are presented. On this basis, several system SA methods are discussed. Finally, the principle of application of SA in MDO of flying vehicles are summarized, and the generalized SA method are suggested which can be used more widely.