| 角域AR谱技术在齿轮故障诊断中的应用 |
| |
| 引用本文： | 刘小峰,柏林.角域AR谱技术在齿轮故障诊断中的应用[J].振动工程学报,2010,23(1). |
| |
| 作者姓名： | 刘小峰 柏林 |
| |
| 作者单位： | 重庆大学机械传动国家重点实验室,重庆,400044 |
| |
| 基金项目： | 国家高技术研究发展计划，重庆市科委自然科学基金计划资助项目 |
| |
| 摘 要： | 利用时频分布平面内信号能量峰脊与瞬时频率之间的对应关系,对信号瞬时频率进行估计;在此基础上利用代数方法求解鉴相时标积分方程,并对经插值重采样得到的角域信号进角域平均处理,提高了角域信号的信噪比;最后对角域信号进行AR建模实现信号的阶次谱分析。实际测试结果表明:采用角域AR谱技术处理齿轮箱非平稳振动信号,能够有效地避免传统频谱方法无法解决的"频率模糊"现象,克服了传统阶次谱分辨率较低,谱线毛糙,易受噪声及轴频调制影响等缺点,对齿轮箱的早期故障有较好的识别能力。
|
| 关 键 词： | 瞬时频率 角域信号 阶比跟踪 AR建模 故障诊断 |
Application of angle domain-AR spectrum technology in gearbox fault diagnosis |
| |
| LIU Xiao-feng,BO Lin.Application of angle domain-AR spectrum technology in gearbox fault diagnosis[J].Journal of Vibration Engineering,2010,23(1). |
| |
| Authors: | LIU Xiao-feng BO Lin |
| |
| Affiliation: | LIU Xiao-feng,BO Lin(The State Key Laboratory of Mechanical Transmission,Chongqing 400044,China) |
| |
| Abstract: | Aiming at the difficult problem of processing the non-stationary vibration signals such as speed up or speed down signals,a novel method is proposed,which combines order tracking analysis and AR modeling to analyze the gearbox viberation signals at varying rotation speed.Firstly,adaptive optimum kernel time-frequency reprenstation is selected to describe the corresponding relation between the instantaneous frequency(IF) curve and the position information of energy ridge.Secondly,the IF is estimated with the... |
| |
| Keywords: | instantaneous frequency angle domian signal order tracking AR modeling fault diagnosis |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
