[1] Zhang Jianping, Wang Ruitao,. Life prediction for vacuum fluorescent displayusing maximum likelihood estimation [J]. Journal of Southeast University (English Edition), 2009, 25 (2): 189-192. [doi:10.3969/j.issn.1003-7985.2009.02.010]

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Life prediction for vacuum fluorescent displayusing maximum likelihood estimation()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

25

Issue:

2009 2

Page:

189-192

Research Field:

Electronic Science and Engineering

Publishing date:

2009-06-30

Info

Title:

Life prediction for vacuum fluorescent displayusing maximum likelihood estimation

Author(s):

Zhang Jianping;  Wang Ruitao

School of Thermal Power and Environmental Engineering, Shanghai University of Electric Power, Shanghai 200090, China

Keywords:

vacuum fluorescent display;  accelerated life test;  constant stress;  Weibull distribution;  maximum likelihood estimation

PACS:

TN141;TN102

DOI:

10.3969/j.issn.1003-7985.2009.02.010

Abstract:

In order to obtain the life information of the vacuum fluorescent display(VFD)in a short time, a model of constant stress accelerated life tests(CSALT)is established with its filament temperature increased, and four constant stress tests are conducted.The Weibull function is applied to describe the life distribution of the VFD, and the maximum likelihood estimation(MLE)and its iterative flow chart are used to calculate the shape parameters and the scale parameters.Furthermore, the accelerated life equation is determined by the least square method, the Kolmogorov-Smirnov test is performed to verify whether the VFD life meets the Weibull distribution or not, and self-developed software is employed to predict the average life and the reliable life.Statistical data analysis results demonstrate that the test plans are feasible and versatile, that the VFD life follows the Weibull distribution, and that the VFD accelerated model satisfies the linear Arrhenius equation.The proposed method and the estimated life information of the VFD can provide some significant guideline to its manufacturers and customers.

References:

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Memo

Memo:

Biography: Zhang Jianping(1972—), male, doctor, associate professor, jpzhanglzu@163.com.
Foundation items: Undergraduate Education Highland Construction Project of Shanghai, the Key Course Construction of Shanghai Education Committee(No.20075302), the Key Technology R& D Program of Shanghai Municipality(No.08160510600).
Citation: Zhang Jianping, Wang Ruitao.Life prediction for vacuum fluorescent display using maximum likelihood estimation[J].Journal of Southeast University(English Edition), 2009, 25(2):189-192.

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