Sample expansion-based unbalanced data multi-dimensional parameter estimating method
A technology of unbalanced data and parameter estimation, applied in electrical digital data processing, special data processing applications, calculations, etc., can solve problems such as severe stress coupling, complex failure mechanism, and various failure modes
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[0115] The effectiveness of the above method is verified by the accelerated life test example below.
[0116] (1) Accelerated life test sample
[0117] The first group of test samples is accelerated life test samples, and there are 2 pumps for accelerated life test:
[0118] Pump 1 is a new pump, according to the accelerated life test load spectrum shown in Table 1, it fails in 187.1 hours.
[0119] Table 1 Pump 1 accelerated life test load spectrum
[0120]
[0121] Pump 2 is a new pump, according to the accelerated life test load spectrum shown in Table 2, it will fail after 188.6 hours of acceleration.
[0122] Table 2 Pump 2 accelerated life test load spectrum
[0123]
[0124] (2) Reuse samples
[0125] In order to improve the accuracy of parameter estimation, three non-life test samples are introduced as multiplex samples:
[0126] Pump 3 runs for 425 hours according to the long-term test load spectrum shown in Table 3, and then accelerates to fail for 357.3 h...
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