In this study, the fault detection of nonlinear rotor-bearing systems is investigated by using the frequency analysis approach. The Nonlinear Output Frequency Response Functions (NOFRFs) of the nonlinear rotor-bearing system are evaluated and used to diagnosis the abnormal conditions of the bearings. Both simulation and experimental studies are conducted to demonstrate the application of the NOFRFs based fault detection method. The results indicate that the higher order NOFRFs are sensitive to the faults of the bearings and independent of the imbalance distance of the rotor. The monotonous change of the NOFRFs with the severity of the faults can be used to effectively quantify the severities of defects in the rotor-bearing systems.
|Title of host publication||10th International Conference on Modelling, Identification and Control, ICMIC 2018|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Number of pages||6|
|Publication status||Published - 11 Nov 2018|
|Event||10th International Conference on Modelling, Identification and Control - Guiyang, China|
Duration: 2 Jul 2018 → 4 Jul 2018
|Conference||10th International Conference on Modelling, Identification and Control|
|Abbreviated title||ICMIC 2018|
|Period||2/07/18 → 4/07/18|
Bibliographical noteFunding Information:
This work was partly supported by the UK EPSRC and Royal Society. Yunpeng Zhu would like to acknowledge the support of Engineering Faculty Scholarship for his PhD study at Sheffield on this subject.
© 2018 IEEE.
- Fault detection
- Frequency domain
- Nonlinear rotor-bearing system
ASJC Scopus subject areas
- Modelling and Simulation
- Hardware and Architecture
- Mechanical Engineering
- Computational Mathematics
- Control and Optimization