|
|||||
|
|
| 次同步谐振下机组轴系弯扭振动信号分析 | |
| 引用本文： | 向玲,杨世锡,唐贵基.次同步谐振下机组轴系弯扭振动信号分析[J].振动．测试与诊断,2011,31(2):233-236. |
| 作者姓名： | 向玲 杨世锡 唐贵基 |
| 作者单位： | 1. 浙江大学机械工程系,杭州,310027;华北电力大学机械工程系,保定,071003 2. 浙江大学机械工程系,杭州,310027 3. 华北电力大学机械工程系,保定,071003 |
| 基金项目： | 国家高技术研究发展计划("八六三")计划资助项目，国家自然科学基金 |
| 摘 要： | 分析了次同步谐振下机电扭振互作用的原因.针对现场难以实现的困难,提出并设计了汽轮发电机组模拟系统的次同步谐振试验,并将HHT应用到次同步谐振下的机组弯扭振动的信号分析.Hilbert谱图定量刻画了次同步谐振下轴系弯扭振动的快速发展过程,直观准确地表现了弯扭信号的本质特征.分析表明,次同步谐振下轴系的弯振和扭振是相互影响、相互作用的,发现扭振有抑制轴系复杂频率振动的能力.当次同步谐振的扭振发生时,扭振含有的丰富频率成分发生了变化,并且弯振的二倍频消失. |
| 关 键 词： | 次同步谐振 弯扭振动 Hilbert-Huang变换 信号分析 故障诊断 |
Signal Analysis on Flexural and Torsional Vibration of Generator Shafts Impacted by Subsynchronous Resonance |
|
| Xiang Ling,Yang Shixi,Tang Guiji.Signal Analysis on Flexural and Torsional Vibration of Generator Shafts Impacted by Subsynchronous Resonance[J].Journal of Vibration,Measurement & Diagnosis,2011,31(2):233-236. | |
| Authors: | Xiang Ling Yang Shixi Tang Guiji |
| Affiliation: | Xiang Ling1,2,Yang Shixi1,Tang Guiji2 (1 Department of Mechanical Engineering,Zhejiang University Hangzhou,310027,China) (2Mechanical Engineering Department,North China Electric Power University Baoding,071003,China) |
| Abstract: | A simulation experiment was designed to study subsynchronous resonance of turbo generator shafts.The Hilbert-Huang transform(HHT) was used to analyze flexural and torsional vibrations of the generator shafts impacted by subsynchronous resonance(SSR).The Hilbert spectrum quantitatively demonstrated the process of flexural and torsional vibrations and showed the essential characteristics of the vibration signals.The analysis results show that the flexural and torsional vibrations of shafts are interacted with... |
| Keywords: | subsynchronous resonance(SSR) flexural and torsional vibration Hilbert-Huang transform(HHT) signal analysis fault diagnosis |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
| 点击此处可从《振动．测试与诊断》浏览原始摘要信息 | |
| 点击此处可从《振动．测试与诊断》下载全文 | |