转子非平稳状态的计算阶比-全息谱方法研究  

Research on Calculation of Order Analysis and Holospectrum of Non-stationary Signal Methods for Rotor

作　　者：倪雨晨 廖与禾[2] 马再超[2] 刘庆成[2] 

机构地区：[1]中船重工705所海源测控技术有限公司 [2]西安交通大学机械工程学院

出　　处：《风机技术》2015年第4期19-26,37,共9页Chinese Journal of Turbomachinery

摘　　要：针对转子振动信号的频率在非平稳情况下难以采用传统频谱分析方法提取频率特征的问题,提出了将全息谱原理和计算阶比分析理论相结合的计算阶比-全息谱分析方法。计算阶比分析用于调频信号的角域重采样,并提取需求阶次特征;全息方法用于表达幅值变化规律。通过实验模拟正常转子、裂纹转子和不对中转子的启车状态信号,结果表明:该方法能够实现非平稳状态下故障特征信息的提取,为实际生产过程中的状态监测、故障诊断、评估提供参考和依据。For the rotor frequency under the condition of non-stationary signal difficult to adopt by traditional spectrum analysis method to extract the characteristics. A new method order analysis is put forward. and holospectrum Calculation order frequency based on technique analysis is used to equal angle sampling of frequency modulation signal, and to extract the demand order. Holographic spectrum is used to express amplitude variation. The normal rotor signal, crack rotor signal, and misalignment rotor signal is experimentally simulated. The result showed that this method can realize the fault feature extraction under non-stationary condition and can provide a reference and basis for actual production site in monitoring, fault diagnosis and assessment.

关 键 词：阶比分析 全息谱 等角度采样 转子 故障特征提取 

分 类 号：TH113[机械工程—机械设计及理论] TK05[动力工程及工程热物理]