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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2007, Vol. 8 Issue (3 ): 14-    DOI: 10.1631/jzus.2007.A0422
    
Random vibration analysis of switching apparatus based on Monte Carlo method
ZHAI Guo-fu, CHEN Ying-hua, REN Wan-bin
School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China
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Abstract  The performance in vibration environment of switching apparatus containing mechanical contact is an important element when judging the apparatus’s reliability. A piecewise linear two-degrees-of-freedom mathematical model considering contact loss was built in this work, and the vibration performance of the model under random external Gaussian white noise excitation was investigated by using Monte Carlo simulation in Matlab/Simulink. Simulation showed that the spectral content and statistical characters of the contact force coincided strongly with reality. The random vibration character of the contact system was solved using time (numerical) domain simulation in this paper. Conclusions reached here are of great importance for reliability design of switching apparatus.

Key words： Contact system      Random vibration      Monte Carlo simulation      Matlab/Simulink     
Received: 19 December 2006     
CLC:  TM58  
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ZHAI Guo-fu
CHEN Ying-hua
REN Wan-bin
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ZHAI Guo-fu, CHEN Ying-hua, REN Wan-bin. Random vibration analysis of switching apparatus based on Monte Carlo method. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2007, 8(3 ): 14-.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.2007.A0422     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2007/V8/I3 /14

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