面向一体化设计的高超声速飞行器变参建模方法

Changing parameter modeling method for integrated design of hypersonic vehicle

为本体-控制一体化设计提供有效模型,有助于解决高超声速飞行器控制与外形优化问题。针对直接基于非线性模型进行一体化设计难度大和采用简单的线性模型无法反映飞行器在大包线飞行的动态特性的问题,本文提出面向一体化设计的高超声速飞行器变参代理建模方法,为高超声速飞行器本体-控制一体化优化设计提供精确的本征模型。该方法是包含建模与模型校验的一套完整流程,通过参数分类决策减小建模过程计算量,最终建立包含飞行条件、本体特征等多参数的线性变参代理模型。将提出的建模方法应用于参考飞行器,仿真验证了所建模型能良好表征原对象的非线性特性。

This paper provides an effective model for ontology-based integrated control design to solve the design problems in controls of hypersonic vehicles and its shape optimization.It is known that that the direct integration design based on nonlinear model poses difficult questions and further the design based on the simple linear model does not reflect the dynamic characteristics of the cruising hypersonic vehicles with wide flight envelope.So a changing parameter surrogate modeling method for the integrated design of hypersonic vehicle is proposed in this paper,which is an accurate intrinsic model for the ontology-based integrated control for the optimization of the design of hypersonic vehicle.This modeling method is a complete process,which involves building a model,simulation under various parameters,and verification of the results.Parameter classification algorithm is used to evaluate the modeling process,and at last a linear parameter varying model containing multiple parameters,such as flight conditions and ontology features,are established.Finally,the proposed modeling method is applied to the reference vehicle,and the simulation results show that the model reflects the nonlinear characteristics of the original object.