Second generation wavelet packet construction and aircraft engine weak damage identification
-
摘要: 针对航空发动机滚动轴承微弱损伤识别问题,设计了一种识别滚动轴承早期损伤的第二代小波包方法.构造了第二代小波包分解重构算法和第二代小波包算子计算方法;将滚动轴承振动信号进行第二代小波包分解,然后各个频带分解信号分别进行重构;利用希尔伯特变换解调分析各频带信号,得到对应频带信号的包络谱;计算各个频带中滚动轴承故障特征频率对应包络谱幅值的分贝值,提取各频带中故障特征频率对应分贝值的最大值,对滚动轴承早期损伤情况做出定量识别.仿真信号和试验信号分析表明,该识别方法结果可靠,能准确识别出滚动轴承早期损伤.Abstract: To identify weak damage of aircraft engine rolling bearing, a new method to construct second generation wavelet packet was presented. In this method, the decomposition and reconstruction procedures of second generation packet were designed, and the second generation packet operators which lock on to the dominant signal structure were calculated. The vibration signal of rolling bearing was decomposed with second generation wavelet packet, and the signal at each frequency band was reconstructed. The reconstruction signals were demodulated with Hilbert transform, and envelope spectrum at each band was obtained. The dB values of fault feature frequency components corresponding envelope spectrum at each frequency band were calculated, and the maximal dB value of fault feature frequency components was extracted to identify damage of rolling bearing. The proposed damage identification method was used to analyze simulation signal and experimental signal from a rolling bearing with weak outer race damage, and results confirm the advantages of second generation wavelet packet for rolling bearing damage identification.
-
Key words:
- aircraft engine /
- second generation wavelet packet /
- damage identification
-
[1] 王仲生,何红,陈钱. 小波分析在发动机早期故障识别中的应用研究[J].西北工业大学学报,2006,24(1):68-71 Wang Zhongsheng, He Hong, Chen Qian. Exploring effective early identification of aero-engine rotor faults[J]. Journal of Northwestern Polytechnical University, 2006, 24(1):68-71(in Chinese) [2] Sweldens W. The lifting scheme:a custom-design construction of biorhogonal wavelets [J]. Appl Comput Harmon Anal, 1996, 3(2):186-200 [3] Swledens W. The lifting scheme:a construction of second generation wavelets[J]. SIAM J Math Anal, 1997, 29(2):511-546 [4] 姜洪开,何正嘉,段晨东,等. 基于提升方法的小波构造及早期故障特征提取[J]. 西安交通大学学报, 2005,39(5):494-498 Jiang Hongkai, He Zhengjia, Duan Chendong, et al. Wavelet construction based on lifting scheme and incipient fault feature extraction [J]. Journal of Xi’an Jiaotong University, 2005, 39(5):494-498(in Chinese) [5] 姜洪开,何正嘉,段晨东,等. 自适应冗余第2代小波设计及齿轮箱故障特征提取[J]. 西安交通大学学报, 2005, 39(7):715-718 Jiang Hongkai, He Zhengjia, Duan Chendong, et al. Adaptive redundant second generation wavelet design and gearbox fault feature extraction [J]. Journal of Xi’an Jiaotong University, 2005, 39(7):715-718(in Chinese) [6] Jiang Hongkai, He Zhengjia, Duan Chendong, et al. Gearbox fault diagnosis using adaptive redundant lifting sheme [J]. Mechanical Systems and Signal Processing, 2006, 20(8):1992-2006 [7] Daubechies I, Sweldens W. Factoring wavelet transform into lifting steps [J]. J Math Anal Appl, 1998, 4(3):247-269 期刊类型引用(8)
1. 赵志彬,杨正伟,李胤,寇光杰,陈金树,张炜. 低速冲击下碳/玻混杂复合材料红外辐射特征. 北京航空航天大学学报. 2023(01): 177-186 . 本站查看
2. 石姗姗,吕超雨,吕航宇,程功,孙直. 具有Kevlar短纤维界面增韧的碳纤维/铝蜂窝夹芯板冲击后压缩性能. 复合材料学报. 2023(02): 771-781 . 百度学术
3. 刘俭辉,潘仪晨,薛文卓,孙建仁. T300/69层合板多角度冲击下的数值模拟研究. 兰州理工大学学报. 2023(03): 43-48 . 百度学术
4. 谭理成,汪舟,王晓丽,杨莹,蒋亚琴,曾飞,段芳芳,甘进. 冲头形状对复合材料层合板低速冲击力学行为影响研究. 兵器材料科学与工程. 2023(04): 1-7 . 百度学术
5. 夏法锋,张红哲,李洋. 基于3D打印技术制备CF-PLA纤维及性能研究. 塑料工业. 2023(08): 152-157 . 百度学术
6. 许良,胡鸿铭,周松,宋万万. 两次冲击距离对CFRP层合板冲击损伤和剩余压缩强度的影响. 复合材料科学与工程. 2023(12): 12-18+37 . 百度学术
7. 张梦涛,刘峰,李雪江. 碳纤维层合板低能量冲击后静强度试验研究. 新技术新工艺. 2022(01): 62-66 . 百度学术
8. 王涛,杨勇新. 低速冲击下复合材料组合板新型耗能模式研究. 复合材料科学与工程. 2022(02): 75-81 . 百度学术
其他类型引用(8)
-

计量
- 文章访问数: 3106
- HTML全文浏览量: 226
- PDF下载量: 871
- 被引次数: 16