Aero-engine unbalanced fault location identification method based on deep learning
-
摘要: 针对基于机匣测点的航空发动机不平衡故障部位识别问题,提出了基于深度卷积神经网络的航空发动机不平衡故障部位诊断方法。针对某典型双转子航空发动机,建立整机耦合动力学模型,并利用数值积分算法实现不平衡故障数值仿真;在从发动机压气机端到涡轮端的高、低压转子上选择4个不平衡故障部位作为诊断对象,通过仿真分析得到发动机典型转速下的转子不同部位不平衡故障的仿真样本;计算4个机匣测点信号的规范化频谱,通过对大量仿真数据的处理得到反映不同不平衡故障部位的故障样本集;利用仿真得到的大量不平衡故障样本,训练深度卷积神经网络,利用深度卷积神经网络的优良特征学习能力实现航空发动机不平衡故障的不同部位进行识别,数值试验结果表明该方法对航空发动机不平衡故障部位的识别准确率达到95%。Abstract: For the problem of aero-engine unbalanced fault location diagnosis based on casing test points, a method of aero-engine unbalanced fault location diagnosis based on deep convolution neural network was presented. The coupling dynamic model of a typical dual-rotor aero-engine was established, and the numerical integration method was used to realize the numerical simulation of unbalanced fault. Four unbalanced fault positions were selected from the high and low pressure rotors of the compressor end to the turbine end as the diagnostic object. A large number of unbalanced fault samples obtained by simulation were used to train the deep convolution neural network, and the excellent feature learning ability of the deep convolution neural network was used to realize the identification of different positions of the aeroengine unbalanced fault. The numerical experimental results fully showed the accuracy of the method to identify the unbalanced fault locations of aero-engine reached to 95%.
-
[1] 朱梓根.航空涡喷、涡扇发动机结构设计准则(研究报告):第6册 转子系统[R].北京:中国航空工业总公司发动机系统工程局,1997. [2] 付才高.航空发动机设计手册:第19册 转子动力学与整机振动[M].北京:航空工业出版社,1996. [3] 李亚伟,荆建平,张永强,等.基于参数识别的航空发动机转子故障诊断与定位方法[J].噪声与振动控制,2018,38(4):174-179. LI Yawei,JING Jianping,ZHANG Yongqiang,et al.Fault diagnosis and localization method for aero-engine rotors based on parameter identification[J].Noise and Vibration Control,2018,38(4):174-179.(in Chinese) [4] 李亚伟.基于参数识别的航空发动机转子典型故障诊断与定位方法研究[D].上海:上海交通大学,2018. LI Yawei.Research on typical fault diagnosis and location method of aero-engine rotor based on parameter identification[D].Shanghai:Shanghai Jiaotong University,2018.(in Chinese) [5] 韩磊.航空发动机振动状态特征提取与模式识别方法研究[D].北京:北京航空航天大学,2013. HAN Lei.Studies on feature extraction and mode recognition of vibration in aero-engine[D].Beijing:Beijing University of Aeronautics and Astronautics,2013. [6] YUAN Mei,WU Yuting,LIN Li.Fault diagnosis and remaining useful life estimation of aero engine using LSTM neural network[R].Beijing:IEEE/CSAA International Conference on Aircraft Utility Systems,2016. [7] YANG Xinyi,PANG Shan,SHEN Wei,et al.Aero engine fault diagnosis using an optimized extreme learning machine[J].International Journal of Aerospace Engineering,2016,2016(1):1-10. [8] CHE Changchang,WANG Huawei,NI Xiaomei,et al.Fault fusion diagnosis of aero-engine based on deep learning[J].Journal of Beijing University of Aeronautics and Astronautics,2018,44(3):621-628. [9] JANSSENS O,SLAVKOVIKJ V,VERVISCH B,et al.Convolutional neural network based fault detection for rotating machinery[J].Journal of Sound and Vibration,2016,377(5):331-345. [10] 陈果.双转子航空发动机整机振动建模与分析[J].振动工程学报,2011,24(6):619-632. CHEN Guo.Vibration modeling and analysis for dual-rotor aero-engine[J].Journal of Vibration Engineering,2011,24(6):619-632.(in Chinese) [11] 陈果.航空发动机整机振动耦合动力学新模型及其验证[J].航空动力学报,2012,27(2):241-254. CHEN Guo.A coupling dynamic model for whole aero-engine vibration and its verification[J].Journal of Aerospace Power,2012,27(2):241-254.(in Chinese) [12] CHEN Guo.Vibration modeling and verification for whole aero-engine[J].Journal of Sound and Vibration,2015,349(3):163-176. [13] CHEN Guo.Simulation of casing vibration resulting from blade-casing rubbing and its verifications[J].Journal of Sound and Vibration,2016,361(9):190-209. [14] 陈果.含复杂滚动轴承建模的航空发动机整机振动耦合动力学模型[J].航空动力学报,2017,32(9):2193-2204. CHEN Guo.Whole aero-engine vibration coupling dynamics model including modeling of complex ball and roller bearings[J].Journal of Aerospace Power,2017,32(9):2193-2204.(in Chinese) [15] CHEN Guo,QU Meijiao.Modeling and analysis of fit clearance between outer ring and bearing housing of rolling bearings[J].Journal of Sound and Vibration,2019,438(11):419-440. [16] LECUN Y,BENGIO Y,HINTON G.Deep learning[J].Nature,2015,521(7553):436-444. [17] HINTON G,DENG L,YU D,et al.Deep neural networks for acoustic modeling in speech recognition:the shared views of four research groups[J].IEEE Signal Processing Magazine,2012,29(6):82-97. [18] HE Kaiming,ZHANG Xiangyu,REN Shaoqing,et al.Delving deep into rectifiers:surpassing human-level performance on imagenet classification[C]∥Proceedings of IEEE International Conference on Computer Vision.Santiago Chile,USA:IEEE,2015:1026-1034.
点击查看大图
计量
- 文章访问数: 117
- HTML浏览量: 2
- PDF量: 181
- 被引次数: 0