Nonlinear identification of electro-magnetic force model

被引：0
作者：
R. Shabani
S. Tariverdilo
H. Salarieh
机构：
[1] Urmia University,Mechanical Engineering Department, Faculty of Engineering
[2] Urmia University,Civil Engineering Department, Faculty of Engineering
[3] Sharif University of Technology,Center of Excellence in Design, Robotics, and Automation (CEDRA)
来源：
Journal of Zhejiang University SCIENCE A | 2010年 / 11卷
关键词：
Identification; Nonlinear vibration; Magnetic bearing; Weighted residual method; O34;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Conventional attractive magnetic force models (proportional to the coil current squared and inversely proportional to the gap squared) cannot simulate the nonlinear responses of magnetic bearings in the presence of electromagnetic losses, flux leakage or saturation of iron. In this paper, based on results from an experimental set-up designed to study magnetic force, a novel parametric model is presented in the form of a nonlinear polynomial with unknown coefficients. The parameters of the proposed model are identified using the weighted residual method. Validations of the model identified were performed by comparing the results in time and frequency domains. The results show a good correlation between experiments and numerical simulations.
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页码：165 / 174
页数：9
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