The Study of Condition Monitoring Technology for Gear Vibration Based on Spectral Correlation
Guo Bi1, Jin Chen2
(1. School of Physics and Mechanical & Electrical Engineering, Xiamen Univ. Xiamen 361000, China;
2. State Key Lab. of Mechanical System and Vibration, Shanghai Jiaotong Univ. Shanghai 200240, China)
Abstract: Gear vibration signals are cyclostationary. Character cyclic frequencies of its spectral correlation density (SCD) function are harmonic clusters, whose basic frequencies traverse modulation frequencies and meshing frequencies of the system. Therefore, the information of the SCD for harmonic cyclic frequency clusters
is concentrated as accumulation energy factor (AEF) for gear precise condition monitoring in this paper, which named as meshing vibration monitoring factor and modulation monitoring factor separately. AEF can be employed to monitor certain vibration phenomena in gear transmission system, which is favorable for fault location determination. AEF extracts information from whole analysis frequency band, and it is superior at early weak fault identification. Experimental results in this paper verified the sensitivity and the practicability of AEF.
毕果 陈进. 基于谱相关的齿轮振动监测技术研究[J]. , 2009, 28(7): 17-21.
Guo Bi;Jin Chen. The Study of Condition Monitoring Technology for Gear Vibration Based on Spectral Correlation. , 2009, 28(7): 17-21.