Determination of acceleration parameter range in vacuum fluorescent display device accelerated life test

Determination of acceleration parameter range in vacuum fluorescent display device accelerated life test

  • CN 101,329,219 A
  • Filed: 07/22/2008
  • Published: 12/24/2008
  • Est. Priority Date: 07/22/2008
  • Status: Active Application
First Claim
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1. , in the vacuum fluorescent display accelerated life test acceleration parameter scope determine that determining of described acceleration parameter scope comprises the following steps:

  • (1) selection is keeping carrying out four groups of stress accelerated life test under the constant situation of failure mechanism as the acceleration stress of accelerated life test, and the application Weibull Function was described the life-span of VFD;

    (2), adopt maximum-likelihood method to estimate form parameter m, the scale parameter η

    of Weibull distribution to VFD stress accelerated life test data statistic analysis;

    (3) utilize Allan Nice (Arrhenius) equation and calculate the acceleration parameter β

    of vacuum fluorescent display accelerated life test in conjunction with least square method.

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