噪声与振动控制2017，Vol.37Issue(5)：166-169,4.DOI:10.3969/j.issn.1006-1355.2017.05.034
涡轴发动机起动信号的奇异值分解研究
Analysis of Starting Characteristics of Turboshaft Engines Based on Singular Value Decomposition
摘要
Abstract
The vibration signal in starting process of the power turbine rotor of a turboshaft engine is analyzed. The singular value decomposition method is applied to realize the non-stationary vibration signal denoising and singular value reconstruction. The vibration characteristics of the starting vibration signal can be obtained by the singular value reconstruction. It is found that the main frequencies of the turboshaft engine for convex platforms 1 and 2 are all 154 Hz, which is the 2/3 octave frequency of the second order critical speed of the power turbine rotor. The main frequency of the engine for convex platform 3 is 160 Hz. These vibration characteristics can provide reference information for engine vibration troubleshooting and dynamic balancing.关键词
振动与波/奇异值分解/发动机/起动Key words
vibration and wave/singular value decomposition (SVD)/engine/starting分类
通用工业技术引用本文复制引用
卢娜,任兴民,金明鑫,杨永锋..涡轴发动机起动信号的奇异值分解研究[J].噪声与振动控制,2017,37(5):166-169,4.基金项目
国家自然科学基金资助项目(11272257) （11272257）
西北工业大学"翱翔新星"资助项目 （）
