Bearing Fault Prognosis Method Based on Priori Knowledge-Enhanced Particle Filter

Table 5

Fault prognosis results of the PKE-PF method under 90% confidence interval of different observed sample lengths.

Observed sample length	Number of predicted failure samples	Prediction accuracy (%)
1000	3916	84.69
1500	3871	83.72
1800	5020	91.44
2500	4670	99.01