个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:力学与航空航天学院
电子邮箱:xlguo@dlut.edu.cn
Bearing parameter identification of rotor-bearing system based on Kriging surrogate model and evolutionary algorithm
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论文类型:期刊论文
发表时间:2013-05-27
发表刊物:JOURNAL OF SOUND AND VIBRATION
收录刊物:SCIE、EI、Scopus
卷号:332
期号:11
页面范围:2659-2671
ISSN号:0022-460X
摘要:Bearing dynamic parameters are important factors governing the vibration characteristics of rotating machinery, but they are usually unknown in the modeling. In this paper, an effective method is proposed to identify the bearing parameters and unbalance information of a rotor-bearing system based on the Kriging surrogate model and evolutionary algorithm (KSMEA). The initial Kriging surrogate model is constructed by the samples of various identification parameters (bearing parameters and magnitude of mass unbalance) and measured unbalance responses, which substitutes the original finite element model. It effectively reduces the computational expense of identification. In order to search for the global optimal solution exactly, one of the evolutionary algorithms, differential evolution (DE) algorithm is employed based on the constructed Kriging surrogate model. The effect on different numbers of samples is discussed to improve the accuracy of the Kriging surrogate model. Both numerical example and experimental results indicate that the proposed method can identify the bearing parameters and unbalance information of rotor-bearing system accurately and reliably. (C) 2012 Elsevier Ltd. All rights reserved.