基于分块交叉信赖域法的航空发动机部件级模型精修方法研究  

Refinement method of aeroengine component level model based on block cross trust region method

作　　者：张书博 郑前钢 陈铖 张海波[1] ZHANG Shubo;ZHENG Qiangang;CHEN Cheng;ZHANG Haibo(College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Aero-Engine Thermal Environment and Structure Key Laboratory of Ministry of Industry and Information Technology,Nanjing 210016,China)

机构地区：[1]南京航空航天大学能源与动力学院,江苏南京210016 [2]航空发动机热环境与热结构工业和信息化部重点实验室,江苏南京210016

出　　处：《推进技术》2025年第1期207-218,共12页Journal of Propulsion Technology

基　　金：国家自然科学基金面上项目(52372389);中国航发集团产学研合作项目(HFZL2023CXY013)。

摘　　要：为了解决传统修模方法易陷入局部最优的问题,提出了一种基于分块交叉信赖域法的航空发动机部件级模型精修方法。该方法首先通过修正函数法进行粗略地缩放,解决原始通用特性图与其真实特性差距较大的问题。在此基础上,采用特性图分块策略,利用试车稳态点数据对特性图进行局部修正,并进一步提出交叉信赖域方法求得其局部区域的修模参数空间,以实现在不同发动机状态下适应性调节优化空间。最后,引入对不同修正区域选取特定的优化空间,避免了单一优化区间带来的局部最优问题。仿真结果表明,相比于传统的修正函数法,本文提出的方法可以使模型各个稳态工况点平均误差从1.13%降低到了0.51%左右,平均精度提升了54%,显著提高了航空发动机数学模型的精度。In order to solve the problem that traditional model repair methods are prone to fall into local optimization,an aeroengine component-level model fine-tuning method based on the chunked cross-reliability domain method is proposed.The method firstly solves the problem of the large gap between the original generalized characteristic map and its real characteristics by roughly scaling through the correction function method.On the basis of this,a chunking strategy of the characteristic map is adopted to locally correct the characteristic map by utilizing the steady state point data of the test vehicle.The cross trust region method is further proposed to find the modification parameter space of the local region,so as to adaptively adjust the optimization space under different engine states.Finally,the introduction of selecting specific optimization spaces for different correction regions avoids the local optimum problem brought by a single optimization interval.Simulation results show that compared with the traditional correction function method,the method proposed in this paper can reduce the average error of each steady state condition point of the model from 1.13%to about 0.51%,and the average accuracy is improved by 54%,which significantly improves the accuracy of the mathematical model of the aeroengine.

关 键 词：航空发动机 涡扇部件级模型 修正函数法 特性图 修正函数法 

分 类 号：V231[航空宇航科学与技术—航空宇航推进理论与工程]