基于最大Lyapunov指数的压气机最先失速级判定  

The Determination of Stall in the Compressor Based on the Analysis of the Largest Lyapunov Exponent

作　　者：伍友利[1,2] 吕建伟[3] 董福安[1] 李世飞[1,2] 

机构地区：[1]空军工程大学理学院 [2]空军工程大学工程学院,陕西西安710038 [3]空军工程大学工程学院

出　　处：《空军工程大学学报（自然科学版）》2005年第2期15-17,共3页Journal of Air Force Engineering University(Natural Science Edition)

基　　金：陕西省自然科学基金资助项目(2000C03)

摘　　要：研究某型发动机8级轴流压气机级间压力信号的最大Lyapunov指数,提出将最大Lya punov指数的零点作为失速的判据,最大Lyapunov指数最先达到零点的那一级就是最先失速级.数值试验结果表明该方法可在压气机深度失速前0. 2s检测到失速起始信号,且最先失速级为第三级。The largest Lyapunov exponents of the pressure signal between the stages of the eight-stage axial compressor of a certain engine is researched. It is presented that, taking zero of the largest Lyapunov exponent as the criterion of the stall of the compressor, the stage whose largest Lyapunov exponent first reaches zero is the stage of the first stall. Computational results demonstrate that the method can detect stall inception signal of compressor 0.2s before the start of deep rotating stall, and the third stage is the stage of the first stall.

关 键 词：最大LYAPUNOV指数 压气机 最先失速级 

分 类 号：V23[航空宇航科学与技术—航空宇航推进理论与工程]