基于相空间重构和SVR的高超风洞温度场预测控制方法  

Temperature Field Predictive Control Method of Hypersonic Wind Tunnel Based on Phase Space Reconstructed and SVR

作　　者：沈力华 崔旭 卢伟国[2] 李强[3,4] 赵鑫 SHEN Li-hua;CUI Xu;LU Wei-guo;LI Qiang;ZHAO Xin(School of Mechatronics Engineering,Shenyang Aerospace University,Shenyang 110136,China;Shenyang Aircraft Industry(Group)Co.,Ltd.,Shenyang 110000,China;AVIC Aerodynamics Research Institute,Shenyang 110034,China;Key Laboratory of Hypersonic Aerodynamic Force and Heat Technology,AVIC Aerodynamics Research Institute Shenyang Aerospace University,Shenyang 110034,China)

机构地区：[1]沈阳航空航天大学机电工程学院,沈阳110136 [2]沈阳飞机工业(集团)有限公司,沈阳110000 [3]中国航空工业空气动力研究院,沈阳110034 [4]中国航空工业空气动力研究院高超声速气动力/热技术重点实验室,沈阳110034

出　　处：《科学技术与工程》2025年第10期4361-4370,共10页Science Technology and Engineering

摘　　要：高超风洞温度场控制精度直接影响到风洞试验数据的准确性,针对高超风洞温度场控制大延迟、非线性、多变量耦合等控制难题,对影响温度的数据进行相空间重构并将支持向量回归应用到高超风洞温度场预测控制中,提高高超风洞温度场控制的精度和效率。同时考虑到支持向量回归机中核函数的选取以及核函数参数的优化影响预测结果的精度,基于不同的核函数对支持向量机建立预测模型,对比验证分析选择最优的核函数,建立PSR-SVR模型对高超风洞温度场进行预测,提高温度预测精度,实际温度场数据分析表明了所提方法的有效性。The precision of temperature field control in the hypersonic wind tunnel directly affects the accuracy of wind tunnel test data.In view of the control problems of hypersonic wind tunnel temperature field control,such as large delay,nonlinear and multi-variable coupling,phase space reconstruction of data affecting temperature was carried out and support vector regression was applied to the hypersonic wind tunnel temperature field predictive control to improve the accuracy and efficiency of hypersonic wind tunnel temperature field control.At the same time,considering that the selection of kernel function in support vector regression machine and the optimization of kernel function parameters affect the accuracy of prediction results,the support vector machine model was established based on different kernel functions,and the optimal kernel function was selected through comparative verification and analysis,and the corresponding PSR-SVR model was established to predict the temperature field of the hypersonic wind tunnel,so as to improve the temperature prediction accuracy.The analysis of actual temperature field data shows the effectiveness of the proposed method.

关 键 词：高超风洞 温度预测 相空间重构 核函数选择 支持向量回归 

分 类 号：V211.752[航空宇航科学与技术—航空宇航推进理论与工程]