A Model-Based Iteration Method of the Estimation for the Bearings Dynamic Coefficients

Yang Kang, Zizhen Qiu, Hao Zhang, Zhanqun Shi, Fengshou Gu, Andrew Ball

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The journal bearings are widely used in the high load rotation machine. The dynamic coefficients of the bearings a critical factor in the fault diagnosis of the system. In this paper, a model-based iteration method is described to identify the bearing dynamic coefficients. The model system is created firstly by the finite element method. Secondly, the principle of the method is proposed combining with the Kalman filter and Tikhonov’s regularisation method, which uses the theoretical dynamic coefficients to estimate the new bearing displacement in the horizontal and vertical directions using single measurement and then recalculate the dynamic coefficients. Finally, to verify this method, numerical simulations are carried out under different rotation speeds. The results show that this method has high confidence intervals in the identification of both stiffness and damping coefficients. This method would provide a new route for the identification of the bearing dynamic coefficients and dynamic analysis for the rotor-bearing system.

Original languageEnglish
Title of host publicationProceedings of IncoME-V & CEPE Net-2020
Subtitle of host publicationCondition Monitoring, Plant Maintenance and Reliability
EditorsDong Zhen, Dong Wang, Tianyang Wang, Hongjun Wang, Baoshan Huang, Jyoti K. Sinha, Andrew David Ball
PublisherSpringer, Cham
Pages709-717
Number of pages9
Volume105
Edition1st
ISBN (Electronic)9783030757939
ISBN (Print)9783030757953, 9783030757922
DOIs
Publication statusPublished - 16 May 2021
Event5th International Conference on Maintenance Engineering: IncoME-V and the 2020 Annual Conference of the Centre for Efficiency and Performance Engineering Network: IncoME-V & CEPE Net-2020 - Zhuhai, China
Duration: 23 Oct 202025 Oct 2020
Conference number: 5

Publication series

NameMechanisms and Machine Science
PublisherSpringer
Volume105
ISSN (Print)2211-0984
ISSN (Electronic)2211-0992

Conference

Conference5th International Conference on Maintenance Engineering: IncoME-V and the 2020 Annual Conference of the Centre for Efficiency and Performance Engineering Network
CountryChina
CityZhuhai
Period23/10/2025/10/20

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