代理模型在飞行器多学科优化中的应用研究

Application of Surrogate Model in Aircraft Multidisciplinary Design Optimization

飞行器多学科优化能够提高飞行器总体设计的质量和综合性能,然而,在优化设计过程中,庞大的数据量与计算量、复杂的信息交互、非线性设计空间等会耗费大量的优化计算时间,从而降低优化效率及优化结果的准确性。文中针对飞行器多学科设计模型的特点,从工程应用的角度出发,通过构造代理模型,简化了优化迭代过程中需要进行的复杂的学科分析,有效提升了飞行器多学科设计优化的效率。

Aircraft system multidisciplinary design optimization can improve design quality and integrated performance.However,huge amounts of calculation,complex data exchanges,and complicated nonlinearities require a lot of calculation time,which may reduce optimization efficiency and accuracy of optimization.An engineering way to simplify complex subjects analysis during optimization iteration with surrogate model is presented,according to the characteristics of system multidisciplinary design model of aircraft.Results show that the method can improve aircraft system multidisciplinary design optimization efficiency.