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用状态变量法研究轴承-转子系统稳定性(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
1999年06期
Page:
33-36
Column:
研究论文
publishdate:
1900-01-01

Article Info:/Info

Title:
A Study on Rotor Bearing System Stability by State Variable Method
Article ID:
1000-2006(1999)06-0033-04
Author(s):
Wang Zhaowu
College of Electronic and Mechanical Engineering Nanjing Forestry University\ Nanjing\ 210037
Keywords:
Fluid film bearingsA rotor bearing systemStabilityState variable equations analysis method
Classification number :
TH133.31
DOI:
10.3969/j.jssn.1000-2006.1999.06.008
Document Code:
A
Abstract:
To avoid the limitations of the eigenvalues of matrix and Fourier series method for calculating stability and whirling trajectories of a rotor bearing system,the state variable equations analysis method in time domain is first proposed in this paper.Multiplying current state variable value by a matrix,the next time state variable value can be obtained by this method,which can select the large step size to satisfy a given accuracy.The typical whirling trajectories under position perturbation,impact excitation and synchronous unbalance excitations are simulated and a method is given to determine the stability threshold of a rotor bearing system.Simultaneously,the applicable condition of small perturbation theory is discussed.

References

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Last Update: 1900-01-01